Prompts Audio Speech synthesis

SPEECH-TO-TEXT PRICING: 15 PROVIDERS, 150 CONCURRENT CALLS

Prompt Edit here before copy/try — source content is unchanged

Here is a detailed comparison of 15 speech-to-text providers for handling 150 concurrent calls:

1. Dotwave - $4.05
   - Nemotron 3.5 ASR Streaming
   - 150 streams confirmed

2. Baseten - ~$13
   - Nemotron 3.5 ASR, self-hosted on 2x H100
   - Capacity depends on sizing

3. Soniox - ~$18
   - Real-time STT
   - 10 streams by default

4. Cartesia - ~$19.50
   - Ink-Whisper
   - 60 streams on Scale; monthly fee extra

5. AssemblyAI - $22.50
   - Universal-Streaming Multilingual
   - No active-session cap; 100 new sessions/min

6. Together AI - $40.50
   - Nemotron 3.5 ASR
   - 150-stream quota not verified

7. Deepgram - $43.20–52.20
   - Nova-3, promotional PAYG pricing
   - 150 streams per project
   - Regular price: $69.30–82.80

8. Speechmatics - $45
   - Agent STT (Linden 1)
   - 50 sessions on self-serve
   - Discounted estimate: ~$24

9. Mistral - $54
   - Voxtral Realtime
   - Concurrency limit not published

10. ElevenLabs - ~$58.50
    - Scribe v2 Realtime
    - 45 streams on Scale/Business; Enterprise for more

11. Amazon Transcribe - $90
    - Standard Streaming
    - 25 streams by default; quota increase available

12. Gladia - ~$112.50
    - Self-Serve real-time
    - 30 live sessions on Self-Serve

13. Google Cloud - $144
    - Speech-to-Text V2 / Chirp 3
    - 300 sessions per project/region
    - 5-minute stream limit

14. Azure AI Speech - $150
    - Standard real-time
    - 100 streams per resource by default; adjustable

15. OpenAI - $153
    - gpt-realtime-whisper
    - Throughput-limited; 150 streams fit on paper

Key Takeaways:
- Cheapest with 150 streams confirmed: Dotwave ($4.05).
- Next options: AssemblyAI ($22.50) and Deepgram ($43+).
- The same model, Nemotron 3.5 ASR, is available through Dotwave, Together AI and Baseten at very different prices.
- Price per minute does not tell you whether a provider can handle 150 simultaneous calls.
- Concurrent streams, new sessions per minute and audio minutes per minute are different limits.
- Promotional pricing can change, so budget using regular rates where possible.

Uses the text above; some sites may auto-send

Usage & requirements

Choose the right speech-to-text service provider based on concurrency requirements

Source: r/TextToSpeech ↗

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