# Paxa Labs and Rev AI for multilingual speech to text

A transcription API for Thai and other languages next to Rev AI, across mixed-language speech, language support, how the transcript comes back, speakers, vocabulary, subtitles, and live transcription.

Rev AI lists Thai and Mandarin Chinese among the 58+ languages of its asynchronous API. Its streaming API covers 9+ languages, and Thai is not marked for it. Paxa STT Lite transcribes Thai, English, Mandarin, and other languages. A Thai sentence that turns into English is written as it was spoken, with no setting. Paxa STT Lite is a Research preview. Requests bill at the published rate, and its transcript quality and options may change between releases.

Sources: [Rev AI FAQ](https://docs.rev.ai/faq), [Rev AI languages](https://www.rev.ai/languages)

Rates and claims last checked October 2026

## What differs

| Dimension | Paxa Labs | [Rev AI](https://www.rev.ai/pricing) |
| --- | --- | --- |
| Thai with English inside it | A Thai sentence that switches into English is written as spoken, with no setting. Nothing is translated. | Their languages page lists Thai for the asynchronous API. Its one mixed-language entry is English with Spanish (en/es). |
| Languages | Thai, English, Mandarin, and other languages. Paxa STT Lite writes speech in the language spoken and detects that language itself. A BCP 47 hint corrects a recording it misreads. | 58+ languages on the asynchronous API, Thai and Mandarin Chinese (Simplified) among them, and 9+ on streaming. |
| Getting the transcript | One request with model paxa-stt-lite-v1-preview returns the transcript in its response, for recordings up to 120 minutes and 95 MiB. | A job submitted by URL or upload, up to 17 hours of audio, with a webhook when it finishes. Their guide advises against polling for status in production. |
| Speaker turns | Speaker turns numbered from 0 in order of first appearance, on recordings up to 120 minutes, at no extra charge. | Diarization for up to 8 speakers in English and 6 in other languages. |
| Vocabulary | A vocabulary of up to 50 terms, in Thai or any other language, at no extra charge. | Up to 6000 phrases per job in English and 1000 in other languages. |
| Subtitles | An SRT or WebVTT file in the same response. Every line break falls on a word boundary, Thai included. | Captions from a separate call on the finished job, in SRT by default or VTT. |
| Live transcription | Paxa STT Lite Realtime streams over a WebSocket, reports when the user starts and stops talking, and sends one final transcript per turn. | A WebSocket that returns partial and final hypotheses, up to 3 hours per stream. Their languages page marks no streaming for Thai. |

Sources: [Rev AI languages](https://www.rev.ai/languages), [Rev AI FAQ](https://docs.rev.ai/faq), [Rev AI asynchronous getting started](https://docs.rev.ai/api/asynchronous/get-started/), [Rev AI asynchronous API reference](https://docs.rev.ai/api/asynchronous/reference/), [Rev AI streaming](https://docs.rev.ai/api/streaming/)

- Paxa STT Lite, per hour of audio: $0.50
- Rev AI: $0.20-0.30
- Their rate, as a multiple: 0.4-0.6×

Rev AI's range runs from Reverb in English to its rate for other languages, Thai and Mandarin included, each file rounded up to the nearest second with a 15-second minimum. Every rate is per hour of recorded audio, from the vendor's cheapest pay-as-you-go model to its most expensive. Per-minute and per-second rates are converted to that unit.

## What it costs at your volume

| Audio, per month | Paxa Labs | Rev AI | Difference |
| --- | --- | --- | --- |
| 10 hours | $5 | $2-3 | $3 more |
| 100 hours | $50 | $20-30 | $30 more |
| 1,000 hours | $500 | $200-300 | $300 more |
| 10,000 hours | $5,000 | $2,000-3,000 | $3,000 more |

Every figure is the two published rates multiplied by the volume beside it. Where the other vendor publishes a range, the low end is compared and the range is shown.

## When Rev AI is the better choice

Ours is a Research preview, and its output and options may change between releases. A team that needs a settled model today has a reason to stay. Rev AI takes recordings up to 17 hours, and ours stops at 120 minutes. It holds up to 6000 vocabulary phrases in English, and its price list includes human transcription. Choose us when Thai speakers switch into English and one request should return the transcript.

## Questions

### Does Rev AI transcribe Thai?

Yes, on its asynchronous API. Their languages page lists Thai for asynchronous transcription without streaming, and Thai bills at their rate for languages other than English.

### What does Research preview mean for Paxa STT Lite?

Requests bill at the published rate. Transcript quality and the option set may change between releases, and the changelog on our speech to text page records each change.

### Do you publish accuracy or latency comparisons?

No. We publish no accuracy, quality, or latency figures of our own, for our model or anyone else's. Transcribe the same recording on both and read the two transcripts.

### How current are the prices here?

They come from each vendor's published list rate, recorded in one place and re-checked on a fixed schedule. The month of the last check is at the top of the page.

## Other comparisons

- [Best Speech to Text APIs for Each Job](https://paxalabs.com/compare/speech-to-text-apis.md)
- [Paxa Labs and Deepgram for multilingual speech to text](https://paxalabs.com/compare/deepgram.md): $0.26-0.31
- [Paxa Labs and AssemblyAI for multilingual speech to text](https://paxalabs.com/compare/assemblyai.md): $0.15-0.21
- [Paxa Labs and OpenAI for multilingual speech to text](https://paxalabs.com/compare/openai-speech-to-text.md): $0.27-0.36
- [Paxa Labs and Google Cloud Speech-to-Text for multilingual transcription](https://paxalabs.com/compare/google-speech-to-text.md): $0.18-0.96
- [Paxa Labs and Speechmatics for multilingual speech to text](https://paxalabs.com/compare/speechmatics.md): $0.24-0.75
- [Paxa Labs and ElevenLabs Scribe for multilingual transcription](https://paxalabs.com/compare/elevenlabs-scribe.md): $0.22
- [Paxa Labs and Soniox for Thai speech to text](https://paxalabs.com/compare/soniox.md): $0.10
- [Paxa Labs and Amazon Transcribe for multilingual speech to text](https://paxalabs.com/compare/aws-transcribe.md): $0.36
- [Paxa Labs and Gladia for multilingual speech to text](https://paxalabs.com/compare/gladia.md): $0.18-0.30

## Start with free credits

Sign in with Google, GitHub, or Hugging Face and spend 100 one-time free credits on your own text.