Talk Mode

Talk Mode

Talk mode is a continuous voice conversation loop:

1. Listen for speech
2. Send transcript to the model (main session, chat.send)
3. Wait for the response
4. Speak it via ElevenLabs (streaming playback)

Behavior (macOS)

• Always-on overlay while Talk mode is enabled.
• Listening → Thinking → Speaking phase transitions.
• On a short pause (silence window), the current transcript is sent.
• Replies are written to WebChat (same as typing).
• Interrupt on speech (default on): if the user starts talking while the assistant is speaking, we stop playback and note the interruption timestamp for the next prompt.

Voice directives in replies

The assistant may prefix its reply with a single JSON line to control voice:

{
  "voice": "<voice-id>",
  "once": true
}

Rules:

• First non-empty line only.
• Unknown keys are ignored.
• once: true applies to the current reply only.
• Without once, the voice becomes the new default for Talk mode.
• The JSON line is stripped before TTS playback.

Supported keys:

• voice / voice_id / voiceId
• model / model_id / modelId
• speed, rate (WPM), stability, similarity, style, speakerBoost
• seed, normalize, lang, output_format, latency_tier
• once

Config (~/.datzi/datzi.json)

Datzi runs on Ollama (qwen3-coder:14b). No external API keys required. Talk mode TTS requires a local TTS alternative or is not available in local-only mode.

{
  talk: {
    interruptOnSpeech: true
  }
}

Defaults:

• interruptOnSpeech: true

macOS UI

• Menu bar toggle: Talk
• Config tab: Talk Mode group (voice id + interrupt toggle)
• Overlay:
  • Listening: cloud pulses with mic level
  • Thinking: sinking animation
  • Speaking: radiating rings
  • Click cloud: stop speaking
  • Click X: exit Talk mode

Notes

• Requires Speech + Microphone permissions.
• Uses chat.send against session key main.
• TTS playback is available on macOS/iOS/Android when a TTS provider is configured.
• stability for eleven_v3 is validated to 0.0, 0.5, or 1.0; other models accept 0..1.
• latency_tier is validated to 0..4 when set.
• Android supports pcm_16000, pcm_22050, pcm_24000, and pcm_44100 output formats for low-latency AudioTrack streaming.