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feat(tools): add Voxtral TTS provider (Mistral AI)

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jjovalle99 2026-04-06 19:04:00 +01:00 • committed by Teknium
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11 changed files with 379 additions and 12 deletions
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website/docs/user-guide/features/tts.md
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@ -10,7 +10,7 @@ Hermes Agent supports both text-to-speech output and voice message transcription
## Text-to-Speech
Convert text to speech with five providers:
Convert text to speech with six providers:
| Provider | Quality | Cost | API Key |
|----------|---------|------|---------|
@ -18,6 +18,7 @@ Convert text to speech with five providers:
| **ElevenLabs** | Excellent | Paid | `ELEVENLABS_API_KEY` |
| **OpenAI TTS** | Good | Paid | `VOICE_TOOLS_OPENAI_KEY` |
| **MiniMax TTS** | Excellent | Paid | `MINIMAX_API_KEY` |
| **Mistral (Voxtral TTS)** | Excellent | Paid | `MISTRAL_API_KEY` |
| **NeuTTS** | Good | Free | None needed |
### Platform Delivery
@ -34,7 +35,7 @@ Convert text to speech with five providers:
```yaml
# In ~/.hermes/config.yaml
tts:
provider: "edge" # "edge" | "elevenlabs" | "openai" | "minimax" | "neutts"
provider: "edge" # "edge" | "elevenlabs" | "openai" | "minimax" | "mistral" | "neutts"
edge:
voice: "en-US-AriaNeural" # 322 voices, 74 languages
elevenlabs:
@ -50,6 +51,9 @@ tts:
speed: 1 # 0.5 - 2.0
vol: 1 # 0 - 10
pitch: 0 # -12 - 12
mistral:
model: "voxtral-mini-tts-2603"
voice_id: "c69964a6-ab8b-4f8a-9465-ec0925096ec8" # Paul - Neutral (default)
neutts:
ref_audio: ''
ref_text: ''
@ -61,7 +65,7 @@ tts:
Telegram voice bubbles require Opus/OGG audio format:
- **OpenAI and ElevenLabs** produce Opus natively — no extra setup
- **OpenAI, ElevenLabs, and Mistral** produce Opus natively — no extra setup
- **Edge TTS** (default) outputs MP3 and needs **ffmpeg** to convert:
- **MiniMax TTS** outputs MP3 and needs **ffmpeg** to convert for Telegram voice bubbles
- **NeuTTS** outputs WAV and also needs **ffmpeg** to convert for Telegram voice bubbles
@ -80,7 +84,7 @@ sudo dnf install ffmpeg
Without ffmpeg, Edge TTS, MiniMax TTS, and NeuTTS audio are sent as regular audio files (playable, but shown as a rectangular player instead of a voice bubble).
:::tip
If you want voice bubbles without installing ffmpeg, switch to the OpenAI or ElevenLabs provider.
If you want voice bubbles without installing ffmpeg, switch to the OpenAI, ElevenLabs, or Mistral provider.
:::
## Voice Message Transcription (STT)