Free Speech-to-text / transcription for AI agents

Run it free (5)

• OpenAI Whisper · open_weights · oss · MIT

  Whisper code and model weights in the OpenAI GitHub repository.

  Limits: none stored.

  Source · asOf 2026-10-25 · LICENSE fetched 2026-10-03 is MIT, copyright 2022 OpenAI. Re-fetched twice 2026-10-25: the GitHub blob page (HTTP 200) changes between fetches (page chrome), so the raw file https://raw.githubusercontent.com/openai/whisper/main/LICENSE was also fetched twice (HTTP 200, byte-identical): 'MIT License' / 'Copyright (c) 2022 OpenAI'.

• whisper.cpp · local_runtime · oss · MIT

  Local Whisper inference in C/C++. Weights are separate.

  Limits: none stored.

  Source · asOf 2026-10-25 · Re-fetched twice 2026-10-25 (~10 s apart, plain curl, no login): the GitHub blob page answered HTTP 200 both times (page chrome differs between fetches), so the raw file https://raw.githubusercontent.com/ggml-org/whisper.cpp/master/LICENSE was also fetched twice (HTTP 200, byte-identical): 'MIT License' / 'Copyright (c) 2023-2026 The ggml authors'. License unchanged.

• Groq Free Plan Whisper · free_speech · free

  Free Plan speech-to-text limits for whisper-large-v3 and whisper-large-v3-turbo.

  Limits: scope: organization · models: [object Object]

  Source · asOf 2026-10-24 · Rate-limits page fetched twice 2026-10-24 about 10 s apart (identical HTML; the page shows no last-updated date). Same freeRows payload: whisper-large-v3 and whisper-large-v3-turbo both read RPM 20, RPD 2K, ASH 7.2K, ASD 28.8K (unchanged). ASH/ASD kept as audio seconds ('ASH: Audio seconds per hour', 'ASD: Audio seconds per day'), not tokens; TPM/TPD are '-' on the page and are not stored. Same exception and account-page caveat as the chat row. Not a separate quota from the org's other Free Plan limits.

• Cloudflare Workers AI speech-to-text (Whisper) · free_speech · free

  Whisper and Whisper large v3 turbo speech-to-text on the shared 10,000 neurons/day free allocation. No separate free audio-minute cap is stated.

  Limits: sharedNeuronsPerDay: 10000 · separateAudioCap: null

  Source · asOf 2026-10-19 · The page prices @cf/openai/whisper and @cf/openai/whisper-large-v3-turbo at $0.0005 per audio minute in neurons. That is the paid unit, not an always-free minute cap. Re-checked 2026-10-19: speech-synthesis tag removed from this row (Whisper is STT); TTS models on the same page are a separate row, cloudflare-workers-ai-tts.

• Gemini 3.5 Transcribe free tier · free_speech · free_tier_unspecified

  gemini-3.5-transcribe standard audio input and text output marked Free of charge. gemini-3.5-transcribe-live (real-time streaming transcription over WebSockets) standard cells are also Free of charge.

  Limits: none stored.

  Source · asOf 2026-10-26 · Pricing page fetched twice 2026-10-26 (identical text; page footer 'Last updated 2026-10-26 UTC'): gemini-3.5-transcribe is 'Our speech-to-text model with automatic language detection, speaker diarization, word-level timestamps, and custom vocabulary biasing.' Its Standard Free Tier input and output cells read 'Free of charge'. gemini-3.5-transcribe-live is 'Our low-latency, real-time speech-to-text model for bidirectional streaming audio transcription over WebSockets.' and its Standard Free Tier input and output cells also read 'Free of charge'. No numeric audio quota. The page's per-minute paid estimates ('Estimated pricing is based on 25 audio tokens per second for input and 175 text tokens per minute for output', with blended rates of ~$0.005 per min for Transcribe and ~$0.009 per min for Live Transcribe) are paid-tier estimates, not a free cap. https://ai.google.dev/gemini-api/docs/rate-limits (fetched twice 2026-10-26, identical text, 'Last updated 2026-10-26 UTC') publishes no free-tier RPM, TPM or RPD and says 'View your active rate limits in AI Studio', so limits stay null. Re-quoted in v0.12.130 (previously fetched twice 2026-10-24, page footer 'Last updated 2026-10-22 UTC'); gemini-3.5-transcribe-live added to this row in v0.12.130 as a Depot data decision (approvalRef 'Ethan delegation 2026-10-21 19:41 ET t55u', decidedBy Agent Depo); no price stored, not a $0 price-sort row.

Reference (docs, public datasets and benchmarks) (0)

None.