What you need
A OpenAI account and an API key. Usage is billed by OpenAI to your account.
Set it up
- Sign in at platform.openai.com and create an API key. Copy it.
- In Infinity, open Settings ▸ Accounts and models and choose OpenAI.
- Press Paste API key, then Verify. Infinity lists the models your key can use.
- Pick a model in the model menu and start a chat.
Good to know
- Your API key is saved in your macOS Keychain and only ever sent to OpenAI.
- What you send goes straight from your Mac to OpenAI, under their terms and privacy policy.
Stuck?See common fixes, or tell us what happened.
Other guides
Ollama · LM Studio · Apple Intelligence · MLX LM · Your ChatGPT plan · Your Claude plan · Anthropic · Google Gemini · OpenRouter · Hugging Face · Groq · Mistral · xAI · Together AI · Any OpenAI-compatible server