Lexicost
AI voice agents / Vendors

Smallest.ai Atoms

In its own words: “Atoms is a voice AI platform by Smallest AI. It lets you create, deploy, and manage AI-powered voice agents that can handle phone calls and web conversations.”

9 of 11 key facts published, pages read .

Developer platforms. Hosted, self-serve services that run the whole call: phone numbers, speech, the AI model and call control, usually priced per minute.

What Smallest.ai Atoms publishes, in short. Platform fee per minute: (Pay as you go). What that fee includes: (Pay as you go). Monthly plan fee: . How the AI model is charged: (Pay as you go). Every figure below opens Smallest.ai Atoms's own words and the date we read them.

Work out a cost with these figures: billed minutes: how vendors round a call, concurrency limits for AI voice agents, cost per call: AI agent or a person, aI voice agent cost per minute, openAI Realtime API cost per minute. Compare with other vendors in the side by side table.

Price

Platform fee per minutePay as you go
Platform fee per minutePay as you go
Platform fee per minuteEnterprise
What that fee includesPay as you go
What that fee includesPay as you go
What that fee includesPay as you go
Monthly plan fee
Minimum commitmentPay as you go
How the AI model is chargedPay as you go
How the AI model is chargedPay as you go
US phone minutes
PlanPay as you go
PlanEnterprise
Minutes included
Price per minute beyond the plan
AI model rate per minutePay as you go
AI model rate per minutePay as you go
AI model rate per minutePay as you go
AI model rate per million tokens
Speech-to-text ratePay as you go
Speech-to-text ratePay as you go
Speech-to-text ratePay as you go
Speech-to-text ratePay as you go
Voice (text-to-speech) ratePay as you go
Voice (text-to-speech) ratePay as you go
Voice (text-to-speech) ratePay as you go
Realtime speech model ratePay as you go
Realtime speech model ratePay as you go
Other phone ratesPay as you go
Phone number, per monthPay as you go
Add-on feePay as you go
Add-on feePay as you go
Add-on feePay as you go
Add-on feePay as you go
Add-on feePay as you go
Add-on feePay as you go
Volume discountEnterprise

Billing rules

How a minute is billed
Minimum billed per call
Fee per call attempt
Billing rule
Billing rule
Billing rule
Billing rule
Billing rule
Billing rule
Billing rule
Billing rule
Billing rule

Capacity

Calls at once, includedPay as you go
Each extra call at oncePay as you go
When you exceed the limit
When you exceed the limit
When you exceed the limit
Burst above the limit
Other limitsPay as you go and Enterprise
Other limits
Other limitsPay as you go
Other limitsPay as you go
Other limitsPay as you go
Other limitsPay as you go

Getting started

Free credit or trialPay as you go
Free credit or trial
Sign up without salesPay as you go

Compliance

HIPAA agreement (BAA)Enterprise
SOC 2
SOC 2
SOC 2Pay as you go
Where data is processed
Where data is processed
Where data is processed
Other compliance statementsEnterprise
Other compliance statements
Other compliance statements
Other compliance statements
Other compliance statements
Other compliance statements
Other compliance statements

Product

Latency the vendor states
Latency the vendor states
Latency the vendor states
Latency the vendor states
Latency the vendor states
Bring your own model, voice or carrier
Bring your own model, voice or carrier
Bring your own model, voice or carrier
White label for agencies
Uptime commitmentPay as you go
Uptime commitmentEnterprise
Support by planPay as you go
Support by planEnterprise
Turn-taking setting
Turn-taking setting
Turn-taking setting
Turn-taking setting

Where Smallest.ai Atoms's own pages say different things

Both statements are quoted with their pages. We do not pick one. Ask the vendor which applies before you rely on either.

What Smallest.ai Atoms's public pages do not settle

  • .

Pages we read

Lexicost has no commercial relationship with any vendor named on this site. Spotted an error? See corrections.

Source for every vendor figure on this page (103)
  1. Smallest.ai Atoms, platform fee per minute: $0.01 per minute hosting fee (Pay as you go. pay as you go. Smallest's own flat hosting fee; the speech-to-text, AI model and voice layers pass through at cost and telephony is a further layer of the per-call price).Smallest Hosting Fees: $0.01/min, Flat Rate smallest.ai/pricing/agents Read 14 Nov 2026.
  2. Smallest.ai Atoms, platform fee per minute: $0.09 to $0.21 per minute per call, by model (Pay as you go) (Pay as you go. pay as you go. Total price per call minute, hosting fee included; it depends on the architecture: cascading (Hosting + STT + LLM + TTS + Telephony) or speech-to-speech (Hosting + S2S + Telephony)).Price per call: Depending on the models $0.09 - $0.21/minute smallest.ai/pricing/agents Read 14 Nov 2026.
  3. Smallest.ai Atoms, platform fee per minute: As low as $0.05 per minute (Enterprise) (Enterprise. Total price per call minute; Enterprise pricing is tailored by sales).Price per call: As low as $0.05/minute smallest.ai/pricing/agents Read 14 Nov 2026.
  4. Smallest.ai Atoms, what that fee includes: Hosting only; models passed through at cost (Pay as you go. The $0.01 per minute Smallest hosting fee).Per-minute rates for each layer in the stack. Model prices pass through at cost; Smallest adds the Hosting fee above. docs.smallest.ai/overview/administration/subscription-plans Read 14 Nov 2026.
  5. Smallest.ai Atoms, what that fee includes: Price per call: hosting, speech-to-text, AI model, voice and telephony (or hosting, speech-to-speech and telephony) (Pay as you go. The $0.09 to $0.21 per minute price per call).Depends on your architecture: cascading (Hosting + STT + LLM + TTS + Telephony) or speech-to-speech (Hosting + S2S + Telephony). smallest.ai/pricing/agents Read 14 Nov 2026.
  6. Smallest.ai Atoms, what that fee includes: Pricing page FAQ: speech-to-text, the AI model and the voice are not billed separately from the per-minute rate (Pay as you go. The per-minute rate named in the FAQ answer).No. Transcription (Pulse), the language model, and voice (Lightning) all run inside the per-minute rate. There's no separate STT, LLM, or TTS charge stacked on top unlike bring-your-own-key platforms. Also: Cascading stacks (Hosting + STT + LLM + TTS + Telephony) bill each layer separately; speech-to-speech stacks (Hosting + S2S + Telephony) bill the S2S layer as one line. docs.smallest.ai/overview/administration/subscription-plans smallest.ai/pricing/agents Read 14 Nov 2026.
  7. Smallest.ai Atoms, monthly plan fee: Not publicly listed. Read 14 Nov 2026.
  8. Smallest.ai Atoms, minimum commitment: No monthly commitment (Pay As You Go) (Pay as you go).Best for: Builders, pilots, and small-scale deployments. No monthly commitment. docs.smallest.ai/overview/administration/subscription-plans Read 14 Nov 2026.
  9. Smallest.ai Atoms, plan: Pay as you go: ideal for builders, pilots and small-scale deployments (Pay as you go. pay as you go).Launch instantly. Scale when you’re ready. Ideal for builders, pilots, and small-scale deployments. smallest.ai/pricing/agents Read 14 Nov 2026.
  10. Smallest.ai Atoms, plan: Enterprise: tailored pricing through sales (Enterprise).Tailored pricing for teams operating at scale. smallest.ai/pricing/agents Read 14 Nov 2026.
  11. Smallest.ai Atoms, minutes included: Not publicly listed. Read 14 Nov 2026.
  12. Smallest.ai Atoms, price per minute beyond the plan: Not publicly listed. Read 14 Nov 2026.
  13. Smallest.ai Atoms, how the AI model is charged: At cost, at a per-minute rate per model (Pay as you go. Cascading architecture (LLM layer)).Per-minute rates for each layer in the stack. Model prices pass through at cost; Smallest adds the Hosting fee above. docs.smallest.ai/overview/administration/subscription-plans Read 14 Nov 2026.
  14. Smallest.ai Atoms, how the AI model is charged: Electron (Smallest's own model): not accessible on Pay As You Go (Pay as you go).Electron (in-house): Not accessible docs.smallest.ai/overview/administration/subscription-plans Read 14 Nov 2026.
  15. Smallest.ai Atoms, aI model rate per minute: About $0.0448 per minute (ChatGPT 4.0, Pay as you go) (Pay as you go. LLM layer of a cascading voice agent).ChatGPT 4.0: ~$0.0448/minute smallest.ai/pricing/agents Read 14 Nov 2026.
  16. Smallest.ai Atoms, aI model rate per minute: $0.045 per minute (ChatGPT 4.1, Pay as you go) (Pay as you go. LLM layer of a cascading voice agent).ChatGPT 4.1: $0.045/minute smallest.ai/pricing/agents Read 14 Nov 2026.
  17. Smallest.ai Atoms, aI model rate per minute: $0.056 per minute (ChatGPT 5.2, Pay as you go) (Pay as you go. LLM layer of a cascading voice agent).ChatGPT 5.2: $0.056/minute smallest.ai/pricing/agents Read 14 Nov 2026.
  18. Smallest.ai Atoms, aI model rate per million tokens: Not publicly listed. Read 14 Nov 2026.
  19. Smallest.ai Atoms, realtime speech model rate: About $0.10 per minute (ChatGPT Realtime, Pay as you go) (Pay as you go. Speech-to-speech layer of a voice agent (alternative to the cascading layers)).ChatGPT Realtime: ~$0.10/minute smallest.ai/pricing/agents Read 14 Nov 2026.
  20. Smallest.ai Atoms, realtime speech model rate: About $0.02 per minute (ChatGPT Realtime Mini, Pay as you go) (Pay as you go. Speech-to-speech layer of a voice agent (alternative to the cascading layers)).ChatGPT Realtime Mini: ~$0.02/minute smallest.ai/pricing/agents Read 14 Nov 2026.
  21. Smallest.ai Atoms, speech-to-text rate: About $0.009 per minute (speech-to-text layer of a voice agent, Pay as you go) (Pay as you go. Speech-to-text layer inside the voice agent price).Speech to Text Layer: ~$0.009/minute smallest.ai/pricing/agents Read 14 Nov 2026.
  22. Smallest.ai Atoms, speech-to-text rate: About $0.003 per minute (Pulse pre-recorded, standalone speech-to-text API) (Pay as you go. Standalone speech-to-text API rate, not the voice agent layer).Pulse (Pre-Recorded): ~$0.003/minute smallest.ai/pricing/models Read 14 Nov 2026.
  23. Smallest.ai Atoms, speech-to-text rate: About $0.004 per minute (Pulse realtime, standalone speech-to-text API) (Pay as you go. Standalone speech-to-text API rate, not the voice agent layer).Pulse (Realtime): ~$0.004/minute smallest.ai/pricing/models Read 14 Nov 2026.
  24. Smallest.ai Atoms, speech-to-text rate: About $0.0035 per minute (Pulse Pro pre-recorded, standalone speech-to-text API, table) (Pay as you go. Standalone speech-to-text API rate, not the voice agent layer).Pulse Pro (Pre-Recorded): ~$0.0035/minute Also: Pulse Pro: Starts at $0.004 smallest.ai/pricing/models smallest.ai/pricing/models Read 14 Nov 2026.
  25. Smallest.ai Atoms, voice (text-to-speech) rate: About $0.09 per minute (voice layer of a voice agent, Pay as you go) (Pay as you go. Text-to-speech layer inside the voice agent price).Text to Speech Layer: ~$0.09/minute smallest.ai/pricing/agents Read 14 Nov 2026.
  26. Smallest.ai Atoms, voice (text-to-speech) rate: About $0.175 per 10,000 characters (Lightning v3.1, standalone text-to-speech API) (Pay as you go. Standalone text-to-speech API rate (Lightning v3.1), billed per character; not the voice agent per-minute layer).Lightning V3.1: ~$0.175/10K characters smallest.ai/pricing/models Read 14 Nov 2026.
  27. Smallest.ai Atoms, voice (text-to-speech) rate: About $0.195 per 10,000 characters (Lightning v3.1 Pro, standalone text-to-speech API) (Pay as you go. Standalone text-to-speech API rate (Lightning v3.1 Pro), billed per character; not the voice agent per-minute layer).Lightning V3.1 Pro: ~$0.195/10K characters smallest.ai/pricing/models Read 14 Nov 2026.
  28. Smallest.ai Atoms, uS phone minutes: Not publicly listed. Read 14 Nov 2026.
  29. Smallest.ai Atoms, other phone rates: Your own telephony provider (BYOT): at cost (Pay as you go).External Telephony Provider, BYOT: At Cost smallest.ai/pricing/agents Read 14 Nov 2026.
  30. Smallest.ai Atoms, phone number, per month: $10 per number per month (Pay as you go) (Pay as you go. Phone number rented through Smallest).Rent a Phone Number: $10/number/month smallest.ai/pricing/agents Read 14 Nov 2026.
  31. Smallest.ai Atoms, add-on fee: HIPAA Zero Data Retention: $1,000 per month add-on (Pay as you go column) (Pay as you go).HIPAA Zero Data Retention: Add-on $1000/mo Also: Zero Data Retention: No docs.smallest.ai/overview/administration/subscription-plans Also: Zero Data Retention is Enterprise only. docs.smallest.ai/overview/administration/subscription-plans smallest.ai/pricing/agents Read 14 Nov 2026.
  32. Smallest.ai Atoms, add-on fee: Knowledge base storage: $3 per GB per user (Pay as you go) (Pay as you go).Knowledge Base: $3/GB/User smallest.ai/pricing/agents Read 14 Nov 2026.
  33. Smallest.ai Atoms, add-on fee: Knowledge base queries: $2 per 1,000 queries (Pay as you go) (Pay as you go).Knowledge Base Query: $2/1K Query smallest.ai/pricing/agents Read 14 Nov 2026.
  34. Smallest.ai Atoms, add-on fee: PII removal: $0.01 per minute (Pay as you go) (Pay as you go).PII Removal: $0.01/minute smallest.ai/pricing/agents Read 14 Nov 2026.
  35. Smallest.ai Atoms, add-on fee: Text messages: $0.005 per message, marked coming soon (Pay as you go) (Pay as you go. Marked Coming Soon on the page).Text Message: $0.005 / Message smallest.ai/pricing/agents Read 14 Nov 2026.
  36. Smallest.ai Atoms, add-on fee: Post-call analytics: 10 per agent (Pay as you go) (Pay as you go).Post Call Analytics: 10 per agent smallest.ai/pricing/agents Read 14 Nov 2026.
  37. Smallest.ai Atoms, volume discount: Custom pricing for enterprise or high-volume needs, through sales (Enterprise).Custom pricing for enterprise or high-volume needs docs.smallest.ai/overview/administration/subscription-plans Read 14 Nov 2026.
  38. Smallest.ai Atoms, how a minute is billed: Connection time, from call start to end.Call length is measured by connection duration from when the call starts to when it ends or the window closes. This is why a call may bill for slightly longer than the conversation itself. smallest.ai/pricing/agents Read 14 Nov 2026.
  39. Smallest.ai Atoms, minimum billed per call: Not publicly listed. Read 14 Nov 2026.
  40. Smallest.ai Atoms, fee per call attempt: Not publicly listed. Read 14 Nov 2026.
  41. Smallest.ai Atoms, billing rule: Charged by call minutes; usage beyond the included minutes is charged at the plan rate.By call minutes. Each plan includes a set number of minutes and a concurrency limit; usage beyond that is charged at your plan's per-minute rate. smallest.ai/pricing/agents Read 14 Nov 2026.
  42. Smallest.ai Atoms, billing rule: No charge to build or configure agents; you pay for call minutes.No. There's no charge to build or configure agents. You only pay for call minutes once your agents start taking calls. smallest.ai/pricing/agents Read 14 Nov 2026.
  43. Smallest.ai Atoms, billing rule: Aborted calls are billed only for the time after they were answered.Aborted calls get the new aborted status, are billed only for the time after they were answered, and are never re-dialed when a campaign resumes. docs.smallest.ai/changelog/voice-agents Read 14 Nov 2026.
  44. Smallest.ai Atoms, billing rule: Outbound call pacing (calls per second) is included at no extra cost.CPS is included with your plan at no extra cost. You pay for concurrency, not for pacing. docs.smallest.ai/voice-agents/build/calls-per-second Read 14 Nov 2026.
  45. Smallest.ai Atoms, billing rule: Standalone text-to-speech is billed per character generated, not per request (Standalone text-to-speech API (Lightning v3.1 and v3.1 Pro)).Per character generated. Both Lightning v3.1 and v3.1 Pro charge on the characters synthesized, not per API call. smallest.ai/pricing/models Read 14 Nov 2026.
  46. Smallest.ai Atoms, billing rule: Payments are non-refundable and non-transferable unless the terms say otherwise.All payments for Transactions are non-refundable and non-transferable except as expressly provided in these Terms. smallest.ai/terms-of-service Read 14 Nov 2026.
  47. Smallest.ai Atoms, billing rule: Credits used up by a platform fault can be raised with support and are reviewed case by case.Purchases are non-refundable by default under the Terms of Service. If credits were consumed because of a platform fault, contact support@smallest.ai with your organization ID, account email, the amount, and what happened; these cases are reviewed individually. docs.smallest.ai/voice-agents/resources/faq Read 14 Nov 2026.
  48. Smallest.ai Atoms, billing rule: At least 30 days notice of fee changes, given by updating the pricing page.Smallest reserves the right to change the fees it charges for the Services, at any time in its sole discretion, provided that Smallest gives you at least 30 days' prior notice of such changes by updating the Pricing Page. smallest.ai/terms-of-service Read 14 Nov 2026.
  49. Smallest.ai Atoms, billing rule: Late payments accrue 1.5% per month and services may be suspended.If you fail to make any payment when due, late charges will accrue at the rate of 1.5% per month or, if lower, the highest rate permitted by applicable law and Smallest may suspend the Services until all payments are made in full. smallest.ai/terms-of-service Read 14 Nov 2026.
  50. Smallest.ai Atoms, calls at once, included: 20 calls at once (Pay as you go) (Pay as you go. One pool shared by webcall, chat, outbound and inbound calls across all agents).Concurrency Included: 20 Included smallest.ai/pricing/agents Read 14 Nov 2026.
  51. Smallest.ai Atoms, each extra call at once: Not available on Pay as you go (Pay as you go).Additional Concurrency: No smallest.ai/pricing/agents Read 14 Nov 2026.
  52. Smallest.ai Atoms, when you exceed the limit: Outbound, webcall and chat requests over the limit are queued, not dropped (Organization concurrency limit reached; outbound, webcall and chat requests).If every slot is full, new outbound, webcall, and chat requests are queued until a slot frees up. They wait, they are not dropped. docs.smallest.ai/voice-agents/build/concurrency Read 14 Nov 2026.
  53. Smallest.ai Atoms, when you exceed the limit: Campaign calls fail if the shared pool is full when the campaign starts dialing (Outbound campaign; shared concurrency pool already saturated when the campaign fires).Campaigns dial out at a fixed rate. If the shared pool is already saturated when the campaign fires, the campaign’s outbound calls fail for lack of slots. docs.smallest.ai/voice-agents/build/concurrency Read 14 Nov 2026.
  54. Smallest.ai Atoms, when you exceed the limit: Inbound calls over the limit ring for about 30 seconds, then disconnect if no slot frees (Inbound telephony when no slot is available).Incoming phone calls cannot be queued: when no slot is available, the caller hears a ring for ~30 seconds. If a slot frees within that window the call connects, otherwise it is disconnected. docs.smallest.ai/voice-agents/build/concurrency Read 14 Nov 2026.
  55. Smallest.ai Atoms, burst above the limit: An agent can exceed its own reservation using shared slots, up to the organization's total concurrency limit.A reserved: 5 agent can run more than 5 concurrent calls when the shared pool has capacity. The ceiling is the org’s total concurrency limit, not the reservation. docs.smallest.ai/voice-agents/build/concurrency Read 14 Nov 2026.
  56. Smallest.ai Atoms, other limits: Pricing page: unlimited agents on both plans (Pay as you go and Enterprise).Number of Agents: Unlimited Agents Also: Agent limits depend on your plan. Free and starter plans have a limited number of agents, while growth and enterprise plans offer higher or unlimited agent counts. docs.smallest.ai/voice-agents/resources/faq smallest.ai/pricing/agents Read 14 Nov 2026.
  57. Smallest.ai Atoms, other limits: Outbound pacing on your own SIP trunk starts at 1 call per second (Numbers imported over your own SIP trunk).Every new trunk starts at 1 call/sec, the safe default when the real limit is unknown. docs.smallest.ai/voice-agents/build/calls-per-second Read 14 Nov 2026.
  58. Smallest.ai Atoms, other limits: Standalone text-to-speech API: 15 concurrent streams (Pay as you go, pricing page) (Pay as you go. Standalone text-to-speech API).Concurrency for TTS: 15 concurrent streams Also: 1 TTS request concurrency: Only 1 Text-to-Speech request can be actively processed at a time per account docs.smallest.ai/api-reference/concurrency-and-limits smallest.ai/pricing/models Read 14 Nov 2026.
  59. Smallest.ai Atoms, other limits: Standalone speech-to-text API: 100 concurrent streams (Pay as you go) (Pay as you go. Standalone speech-to-text API).Concurrency for STT: 100 concurrent streams smallest.ai/pricing/models Read 14 Nov 2026.
  60. Smallest.ai Atoms, other limits: Standalone text-to-speech API: 100 requests per minute (Pay as you go) (Pay as you go. Standalone text-to-speech API).RPM for TTS APIs: 100 smallest.ai/pricing/models Read 14 Nov 2026.
  61. Smallest.ai Atoms, other limits: Standalone text-to-speech API: 450 million characters per month cap (Pay as you go) (Pay as you go. Standalone text-to-speech API).Monthly Character Cap: 450M chars/month smallest.ai/pricing/models Read 14 Nov 2026.
  62. Smallest.ai Atoms, free credit or trial: $10 in free credits to start (Pay as you go).Start with $10 in free credits, full access, and a pricing model that grows with you. smallest.ai/pricing/agents Read 14 Nov 2026.
  63. Smallest.ai Atoms, free credit or trial: $10,000 in credits for up to 6 months for selected startups (grant program) (Startup Grants Program; selected applicants with 20 or fewer employees).Selected startups get $10,000 in credits to build with our Voice Agent Platform for up to 6 months. smallest.ai/grants Read 14 Nov 2026.
  64. Smallest.ai Atoms, sign up without sales: Yes: sign up directly (Pay as you go) (Pay as you go).Getting started: Sign up docs.smallest.ai/overview/administration/subscription-plans Read 14 Nov 2026.
  65. Smallest.ai Atoms, hIPAA agreement (BAA): Enterprise plans, with Zero Data Retention (Enterprise. Zero Data Retention enabled).Yes, on Enterprise plans with Zero Data Retention enabled. Contact sales@smallest.ai. docs.smallest.ai/voice-agents/resources/faq Read 14 Nov 2026.
  66. Smallest.ai Atoms, sOC 2: Documentation FAQ: Atoms is SOC 2 Type II certified.Atoms is SOC 2 Type II certified, GDPR compliant, and offers HIPAA compliance for enterprise accounts. docs.smallest.ai/voice-agents/resources/faq Read 14 Nov 2026.
  67. Smallest.ai Atoms, sOC 2: Trust Center: SOC 2 Type II report for Jan to Jul 2025, marked expired Aug 2026.SOC2 Type II Jan-Jul2025: Expired Aug 2026 security.smallest.ai Read 14 Nov 2026.
  68. Smallest.ai Atoms, sOC 2: Pay as you go: the compliance package (SSO, SOC 2) is not included (Pay as you go).Compliance (SSO, SOC2): No smallest.ai/pricing/agents Read 14 Nov 2026.
  69. Smallest.ai Atoms, where data is processed: Models API runs in two regions and routes each request to the nearest one (Models API (Waves: text-to-speech, speech-to-text, LLM)).Waves runs in two regions and automatically routes every request to the cluster nearest the client. No region selector is required - the routing is transparent to your application. docs.smallest.ai/api-reference/concurrency-and-limits Read 14 Nov 2026.
  70. Smallest.ai Atoms, where data is processed: Sub-processor for GPU compute and model inference located in India.E2E Networks Ltd | GPU compute and model inference | India security.smallest.ai Read 14 Nov 2026.
  71. Smallest.ai Atoms, where data is processed: Cloud infrastructure sub-processor located in India and the United States.AWS | Cloud Infrastructure for our apps and services | India, United States security.smallest.ai Read 14 Nov 2026.
  72. Smallest.ai Atoms, other compliance statements: Zero Data Retention available on Enterprise plans (Enterprise).Zero Data Retention (ZDR) lets you use Smallest AI without your conversation content being kept. It is available on Enterprise plans and covers both surfaces. docs.smallest.ai/overview/administration/zero-data-retention Read 14 Nov 2026.
  73. Smallest.ai Atoms, other compliance statements: Models pricing FAQ: synthesized and processed audio is not retained (Standalone models API).No. Synthesized and processed audio isn't retained. For GDPR, SOC 2, or HIPAA documentation, contact the team. Also: Requests from plans other than Enterprise are processed normally, the header is ignored, and content is kept. docs.smallest.ai/overview/administration/zero-data-retention smallest.ai/pricing/models Read 14 Nov 2026.
  74. Smallest.ai Atoms, other compliance statements: Trust Center lists a HIPAA compliance report dated Jul 2025, valid until Aug 2027.HIPAA Compliance Report Jul 2025: Valid until Aug 2027 security.smallest.ai Read 14 Nov 2026.
  75. Smallest.ai Atoms, other compliance statements: Trust Center lists a PCI DSS certificate dated Dec 2025, valid until Dec 2027.PCI DSS Certificate of Compliance Dec 2025: Valid until Dec 2027 security.smallest.ai Read 14 Nov 2026.
  76. Smallest.ai Atoms, other compliance statements: Trust Center lists ISO certifications valid until Sep 2027.ISO Certifications: Valid until Sep 2027 security.smallest.ai Read 14 Nov 2026.
  77. Smallest.ai Atoms, other compliance statements: PII and PCI redaction available; full compliance (SOC 2, RBAC, SSO) on Enterprise.PII and PCI redaction are available, with full compliance (SOC 2, RBAC, SSO) on Enterprise. smallest.ai/pricing/agents Read 14 Nov 2026.
  78. Smallest.ai Atoms, other compliance statements: TLS 1.3 in transit and AES-256 at rest.Atoms uses TLS 1.3 encryption in transit and AES-256 encryption at rest. docs.smallest.ai/voice-agents/resources/faq Read 14 Nov 2026.
  79. Smallest.ai Atoms, latency the vendor states: Under 100 ms time to first audio (Lightning v3.1 text-to-speech) (Standalone Lightning v3.1 TTS; measurement conditions not stated).Sub 100ms time-to-first-audio. smallest.ai/pricing/models Read 14 Nov 2026.
  80. Smallest.ai Atoms, latency the vendor states: About 200 ms time to first byte at 40 concurrent requests (Lightning v3.1 text-to-speech) (40 concurrent requests, WebSocket streaming; time from sending the request to the first audio byte).Lightning v3.1 (Standard) | ~200 ms | 40 concurrent requests, WebSocket streaming docs.smallest.ai/models/text-to-speech/benchmarks/latency Read 14 Nov 2026.
  81. Smallest.ai Atoms, latency the vendor states: Pricing page: 64 ms time to first transcript (Pulse realtime speech-to-text) (Standalone Pulse realtime STT; measurement conditions not stated).Worlds fastest TTFT 64ms Also: Pulse | Speech to text, streaming and batch | 150 ms TTFT at 1 concurrent, ~300 ms at 100 docs.smallest.ai/model-cards/compare smallest.ai/pricing/models Read 14 Nov 2026.
  82. Smallest.ai Atoms, latency the vendor states: Under 300 ms time to first token (Electron language model) (Electron LLM; measured in-region per the same page).Electron | LLM, OpenAI-compatible chat completions | Under 300 ms TTFT docs.smallest.ai/model-cards/compare Read 14 Nov 2026.
  83. Smallest.ai Atoms, latency the vendor states: 864 ms median voice-to-voice latency on turns without tool calls (Hydra, vendor benchmark) (Hydra speech-to-speech model (beta); Smallest-run AIEWF S2S benchmark, 10 runs of 30 turns; end of user speech to first audio chunk).Hydra | 95.9 % | 864 ms | 1984 ms | 1624 ms docs.smallest.ai/models/speech-to-speech/benchmarks/performance Read 14 Nov 2026.
  84. Smallest.ai Atoms, bring your own model, voice or carrier: Custom OpenAI-compatible LLM endpoints supported if publicly reachable.Yes. Agents support custom OpenAI-compatible LLM endpoints. The endpoint must be publicly reachable; localhost or private-network URLs will not work. docs.smallest.ai/voice-agents/resources/faq Read 14 Nov 2026.
  85. Smallest.ai Atoms, bring your own model, voice or carrier: Bring your own number over SIP trunking.Yes. You can bring your own number via SIP trunk integration. docs.smallest.ai/voice-agents/resources/faq Read 14 Nov 2026.
  86. Smallest.ai Atoms, bring your own model, voice or carrier: Works with any provider that supports standard SIP trunking.The platform works with any provider that supports standard SIP trunking. docs.smallest.ai/voice-agents/telephony/phone-numbers Read 14 Nov 2026.
  87. Smallest.ai Atoms, white label for agencies: Not publicly listed. Read 14 Nov 2026.
  88. Smallest.ai Atoms, uptime commitment: No uptime SLA on Pay as you go (Pay as you go).Infra SLA Guaranteed Uptime (SLA): No smallest.ai/pricing/agents Read 14 Nov 2026.
  89. Smallest.ai Atoms, uptime commitment: 99.99% uptime SLA on Enterprise (Enterprise).Infra SLA Guaranteed Uptime (SLA): Enterprise Grade, 99.99% smallest.ai/pricing/agents Read 14 Nov 2026.
  90. Smallest.ai Atoms, support by plan: Email and community support on Pay as you go (Pay as you go).Email Support: Yes smallest.ai/pricing/agents Read 14 Nov 2026.
  91. Smallest.ai Atoms, support by plan: Priority support on Enterprise (Enterprise).Priority Support: Yes smallest.ai/pricing/agents Read 14 Nov 2026.
  92. Smallest.ai Atoms, turn-taking setting: Allow interruptions: on by default; when off, the caller is not heard while the agent speaks (Speech tab of the agent editor).Allow interruptions | When off, the caller’s audio is suppressed while the agent is speaking (half-duplex). Useful for agent-to-agent calls or very noisy environments. | On docs.smallest.ai/voice-agents/build/speech-settings Read 14 Nov 2026.
  93. Smallest.ai Atoms, turn-taking setting: Interruption backoff timer: a grace period after the agent starts talking, 0 s by default (0 to 10 s) (Speech tab of the agent editor).Interruption backoff timer | A short grace period (in seconds) right after the agent starts talking, during which the caller can’t interrupt it. Set to 0 to disable. Helps stop both sides talking over each other. | 0 (range 0 to 10 s) docs.smallest.ai/voice-agents/build/speech-settings Read 14 Nov 2026.
  94. Smallest.ai Atoms, turn-taking setting: Smart turn detection: a model predicts when the caller has finished speaking (Speech tab of the agent editor).Smart turn detection | Uses a model to predict when the caller has actually finished speaking, instead of only waiting for silence. Cuts down on premature replies. Adds a little latency. | See below docs.smallest.ai/voice-agents/build/speech-settings Read 14 Nov 2026.
  95. Smallest.ai Atoms, turn-taking setting: Release time: wait after the caller stops before the agent replies (Speech tab of the agent editor).Release time | How long to wait after speech ends before the agent starts responding. | See below docs.smallest.ai/voice-agents/build/speech-settings Read 14 Nov 2026.
  96. Smallest.ai Atoms, where the vendor's own pages disagree: The pricing page FAQ says speech-to-text, the language model and the voice all run inside the per-minute rate with no separate charge, while the plan documentation says cascading stacks bill each layer separately..No. Transcription (Pulse), the language model, and voice (Lightning) all run inside the per-minute rate. There's no separate STT, LLM, or TTS charge stacked on top unlike bring-your-own-key platforms. Also: Cascading stacks (Hosting + STT + LLM + TTS + Telephony) bill each layer separately; speech-to-speech stacks (Hosting + S2S + Telephony) bill the S2S layer as one line. docs.smallest.ai/overview/administration/subscription-plans smallest.ai/pricing/agents Read 14 Nov 2026.
  97. Smallest.ai Atoms, where the vendor's own pages disagree: The agent pricing page offers HIPAA Zero Data Retention as a $1,000 per month add-on in the Pay as you go column, while the plan documentation says Zero Data Retention is Enterprise only..HIPAA Zero Data Retention: Add-on $1000/mo Also: Zero Data Retention is Enterprise only. docs.smallest.ai/overview/administration/subscription-plans smallest.ai/pricing/agents Read 14 Nov 2026.
  98. Smallest.ai Atoms, where the vendor's own pages disagree: The documentation FAQ says Atoms is SOC 2 Type II certified, while the Trust Center lists its SOC 2 Type II report (Jan to Jul 2025) as expired in Aug 2026..Atoms is SOC 2 Type II certified, GDPR compliant, and offers HIPAA compliance for enterprise accounts. Also: SOC2 Type II Jan-Jul2025: Expired Aug 2026 security.smallest.ai docs.smallest.ai/voice-agents/resources/faq Read 14 Nov 2026.
  99. Smallest.ai Atoms, where the vendor's own pages disagree: The pricing page and plan documentation list unlimited agents on both plans, while the documentation FAQ says agent limits depend on the plan and names free, starter and growth plans that the pricing page does not list..Number of Agents: Unlimited Agents Also: Agent limits depend on your plan. Free and starter plans have a limited number of agents, while growth and enterprise plans offer higher or unlimited agent counts. docs.smallest.ai/voice-agents/resources/faq smallest.ai/pricing/agents Read 14 Nov 2026.
  100. Smallest.ai Atoms, where the vendor's own pages disagree: The models pricing page gives Pulse Pro as about $0.0035 per minute in its table and as starting at $0.004 per minute on its Pro card..Pulse Pro (Pre-Recorded): ~$0.0035/minute Also: Pulse Pro: Starts at $0.004 smallest.ai/pricing/models smallest.ai/pricing/models Read 14 Nov 2026.
  101. Smallest.ai Atoms, where the vendor's own pages disagree: The models pricing page gives 15 concurrent text-to-speech streams on Pay as you go, while the API documentation says only 1 text-to-speech request can be processed at a time per account..Concurrency for TTS: 15 concurrent streams Also: 1 TTS request concurrency: Only 1 Text-to-Speech request can be actively processed at a time per account docs.smallest.ai/api-reference/concurrency-and-limits smallest.ai/pricing/models Read 14 Nov 2026.
  102. Smallest.ai Atoms, where the vendor's own pages disagree: The models pricing page gives Pulse realtime a 64 ms time to first transcript, while the model comparison documentation gives 150 ms at 1 concurrent session..Worlds fastest TTFT 64ms Also: Pulse | Speech to text, streaming and batch | 150 ms TTFT at 1 concurrent, ~300 ms at 100 docs.smallest.ai/model-cards/compare smallest.ai/pricing/models Read 14 Nov 2026.
  103. Smallest.ai Atoms, where the vendor's own pages disagree: The models pricing FAQ says synthesized and processed audio is not retained, while the Zero Data Retention documentation says content, including uploaded audio, is kept on plans other than Enterprise..No. Synthesized and processed audio isn't retained. For GDPR, SOC 2, or HIPAA documentation, contact the team. Also: Requests from plans other than Enterprise are processed normally, the header is ignored, and content is kept. docs.smallest.ai/overview/administration/zero-data-retention smallest.ai/pricing/models Read 14 Nov 2026.