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Smallest.ai Pulse Review

Ultra-low-latency multilingual STT for voice agents

Among the 43 speech-to-text tools we track, Smallest.ai Pulse has the 30th-widest language coverage.

See pricing

Facts verified Jul 24, 2026Try Smallest.ai Pulse →

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What we know about Smallest.ai Pulse

This is our verified profile of Smallest.ai Pulse, a speech-to-text apis platform - ultra-low-latency multilingual STT for voice agents. Every fact about Smallest.ai Pulse below carries the source it came from and the day we checked it.

Smallest.ai Pulse does not publish a public per-minute rate we have been able to verify, so the price figure here stays blank until we can confirm one. We would rather show nothing than a guessed number; if you have a current Smallest.ai Pulse quote, it is the fastest way for us to close that gap.

On capabilities, Smallest.ai Pulse covers language auto-detection, word-level timestamps, sentiment analysis, soc 2 type ii, self-host / on-prem option, and websocket streaming api. Each of those is verified against Smallest.ai Pulse's own docs or dashboard, not marketing copy.

For compliance, with Smallest.ai Pulse: SOC 2 Type II is in place. If you are in a regulated space, confirm the current posture with Smallest.ai Pulse before you commit, since these change plan by plan.

Among the 43 speech-to-text tools in our matrix, Smallest.ai Pulse leads with the 30th-widest language coverage; the fact sheet below has the raw numbers behind that placement.

Smallest.ai Pulse is not standing still: our record logs 1 verified fact change, each dated and sourced further down the page.

In total we track 23 verified facts for Smallest.ai Pulse today, each linking the primary source it came from so you can check our work - and vendor claims we have not measured ourselves are labeled as such on the Smallest.ai Pulse fact sheet below.

Reviewed by vsref Editorialfacts verified Jul 24, 2026Methodology →

Smallest.ai Pulse pricing

Published rates: batch $0.005/min · streaming $0.005/min, verified Jul 20, 2026 (source).

Smallest.ai Pulse cost at monthly volume tiers
Monthly volumeBatch billStreaming bill
1K min/moSide project$5$5
10K min/moProduction app$50$50
100K min/moCall-center scale$500$500

Sticker rates only; diarization and PII redaction add-ons price in the stack builder. How we compute costs →

Fact sheet

Pricing
Pricing facts
Batch price per audio minute0.005 $/audio-minJul 20
Streaming price per audio minute0.005 $/audio-minJul 20
Pricing modelusageJul 20
Free tier quota$10 in free creditsJul 20
Published volume discountsEnterprise custom pricingJul 20
Concurrency on base plan20 concurrent (agent plan)Jul 20
Extra concurrency costNone on PAYG; custom on EnterpriseJul 20
Capabilities
Capabilities facts
WER (third-party benchmark)2.43 % WERJul 20
WER (vendor-claimed)~5.42 % WERJul 20
Streaming latency (vendor-claimed)~64 msJul 20
Languages supported~38Jul 20
Language auto-detection✓ YesJul 20
Speaker diarization✓ IncludedJul 20
PII redaction✓ IncludedJul 20
PII redaction add-on price per minutenullJul 24
Word-level timestamps✓ YesJul 20
Sentiment analysis✓ YesJul 20
Priced audio-intelligence add-onsDiarization, emotion, gender, sentiment, PIIJul 20
Compliance & trust
Compliance & trust facts
HIPAA BAA available◑ Paid add-onJul 20
SOC 2 Type II✓ YesJul 20
Self-host / on-prem option✓ YesJul 20
Build experience
Build experience facts
Official SDKsNode, PythonJul 20
Websocket streaming API✓ YesJul 20

Considering a switch? Best Smallest.ai Pulse alternatives →

Voice agents in this stack

The engine is one layer: a voice agent hears through its transcription engine, but orchestration, telephony, and turn-taking come from the agent platform. Compare the platforms builders pair Smallest.ai Pulse with: Pipecat, OpenAI Realtime API, Twilio ConversationRelay, or the full voice-agent comparison →

Want it done for you?

Smallest.ai Pulse gets you a transcript; the bot that joins the call, labels speakers, and writes the summary is still your build. If that is more pipeline than you want to own, AI meeting notetakers do the whole job end to end: Otter.ai, Fireflies.ai, Fathom, or the full notetaker comparison.

Smallest.ai Pulse head-to-head

Smallest.ai Pulse vs Deepgram →won 2 · lost 2 · tied 2
Call CenterswonDeveloperslostDictationtieMedicallostMeetingswonSelf-Hostedtie

What changed recently

Jul 24, 2026Smallest.ai PulsePII redaction add-on price per minute: 0.01 → n/a