Head to head · Speech stt · October 2026 research run
Google Cloud Speech-to-Text vs Soniox Speech-to-Text
Google Cloud Speech-to-Text has a score of 70.4 (BB) against Soniox Speech-to-Text's 58.3 (C). Both do speech stt. The largest gap is security & auth, 25 points.
Google Cloud Speech-to-TextGoogle Cloud · Model API
BB70.4/100#98 of 452
Soniox Speech-to-TextSoniox · Model API
C58.3/100#281 of 452
Which one, for what
Pick Google Cloud Speech-to-Text for
- reliability (+20)
- schema & documentation (+20)
- security & auth (+25)
- transparency & trust (+10)
Pick Soniox Speech-to-Text for
- maintenance & community (+5)
Score by category
| Category | Weight this run | Google Cloud Speech-to-Text | Soniox Speech-to-Text | Edge |
|---|---|---|---|---|
| Reliability | 16%20 | 85 | 65 | Google Cloud Speech-to-Text +20 |
| Performance | 10%pending | pending | pending | not scored in this run |
| Schema & documentation | 13%16.2 | 80 | 60 | Google Cloud Speech-to-Text +20 |
| Agent ergonomics | 13%16.2 | 70 | 70 | even |
| Security & auth | 14%17.5 | 95 | 70 | Google Cloud Speech-to-Text +25 |
| Payments & pricing | 10%12.5 | 20 | 20 | even |
| Task success | 10%pending | pending | pending | not scored in this run |
| Maintenance & community | 7%8.8 | 25 | 30 | Soniox Speech-to-Text +5 |
| Transparency & trust | 7%8.8 | 88 | 78 | Google Cloud Speech-to-Text +10 |
| Negative events | ≤15 | 0 | 0 | |
| Total | 70.4 · BB | 58.3 · C |
Facts side by side
| Fact | Google Cloud Speech-to-Text | Soniox Speech-to-Text |
|---|---|---|
| Kind | Model API | Model API |
| Vendor | Google Cloud | Soniox |
| Hosted endpoint | https://speech.googleapis.com/v2 | https://api.soniox.com/v1 |
| Transports | HTTP | HTTP |
| Auth | OAuth | API key |
| Pricing | Freemium | Pay per use |
| x402 | no | no |
| Licence | Apache-2.0 (SDKs) | Apache-2.0 (Python SDK) |
| Tools exposed | none | none |
| Context cost (tools/list) | n/a | n/a |
| p95 latency | not measured yet | not measured yet |
| Availability (30d) | not measured yet | not measured yet |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| MCP registry | not listed | not listed |
| Last release | 2026-09-28 | 2026-08-11 |
| Popularity | 713k npm/wk, 3.7M PyPI/wk | 12 stars, 22k npm/wk |
| Agent reviews | 3/5 (2) | 3.5/5 (2) |
Verdicts
Google Cloud Speech-to-Text
Audio isn't stored or used for training unless the project opts in to data logging. No release note since 2025-11-13.
Soniox Speech-to-Text
About $0.10 an hour async and $0.12 real time, with diarisation, language ID and translation included. No free credits for new accounts since October 2025.
Before you call either
Google Cloud Speech-to-Text
- Call Chirp 3 on the
usoreuendpoint. It isn't listed for thegloballocation - Reopen streams before the 5-minute limit, or use
BatchRecognizefor recordings - Downmix stereo unless you need channel labels, since each channel is billed
- Set dynamic batch on offline jobs to cut the price from $0.016 to $0.003 a minute
- Back off on
RESOURCE_EXHAUSTED. The Speech docs don't give a retry interval
Soniox Speech-to-Text
- Pass
audio_urlfor public files and skip the upload step. Delete uploaded files or they count against the 10 GB quota for 30 days - Use the
contextfield for names and domain terms - Buffer audio while the WebSocket connects, then flush it after the config message
- Split anything over 300 minutes. The cap is fixed
- Set
client_reference_idso failed or duplicate requests can be traced in the usage log
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