On your computer, or on a service. That is the whole choice.
1 Where the work happens.
Prices change, so none are quoted here; each table links the provider’s own pricing page. Free means D47 never bills you for it. Pay per use means the provider does. A provider that runs on this computer keeps that work on this computer. Setting up for the first time is covered in First run.
Conversation
Which AI writes D47’s replies.
| Provider | Cost | Key | Runs on this computer |
|---|---|---|---|
| None (local only) | Free | None | Yes |
| Anthropic | Pay per use | Required | No |
| OpenAI | Pay per use | Required | No |
| OpenAI-compatible endpoint | Set by the server | Optional | If the server is on this computer |
- None (local only) suits a Commander who wants no model and no bill. D47 answers what it understands and says so when it cannot.
- Anthropic is the default and suits a Commander who wants Claude’s answers.
- OpenAI suits a Commander who wants one key to cover conversation, voice and listening.
- OpenAI-compatible endpoint suits a Commander running Ollama or LM Studio, or a gateway they trust. Set its address in Settings.
Voice
How D47 sounds.
| Provider | Cost | Key | Runs on this computer |
|---|---|---|---|
| Edge Neural | Free | None | No |
| Kokoro | Free | None | Yes |
| Chatterbox | Free | None | Yes, on the processor |
| ElevenLabs | Pay per use | Required | No |
| OpenAI | Pay per use | Required | No |
| Cartesia | Pay per use | Required | No |
| None | Free | None | Yes |
- Edge Neural is the default and suits a Commander who wants a voice with no account.
- Kokoro is free, with a small download.
- Chatterbox is free, with a larger download.
- ElevenLabs suits a Commander who wants the widest choice of voices.
- OpenAI and Cartesia suit a Commander who already holds that provider’s key.
- None suits a Commander who reads replies.
Listening
How your speech becomes text.
| Provider | Cost | Key | Runs on this computer |
|---|---|---|---|
| This computer | Free | None | Yes |
| Groq | Pay per use | Required | No |
| OpenAI | Pay per use | Required | No |
| Deepgram | Pay per use | Required | No |
| ElevenLabs | Pay per use | Required | No |
- This computer is the default, free and with no key.
- Groq suits a Commander whose computer is slow at Whisper.
- OpenAI and ElevenLabs suit a Commander who already holds that key for conversation or voice.
- Deepgram suits a Commander who wants a separate transcription service.