Bring Your Own Key

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OpenAIAnthropicBYOK

What it does

Cleo doesn't lock you into a single AI model. Bring your own API key for OpenAI or Anthropic. Switch between GPT-5, Claude Sonnet, or Haiku at any time — your skills, persona, and conversation context carry over seamlessly. Pro users also get included OpenAI credits.

How it works

1

Add your API key

From the dashboard or via chat, configure your preferred AI provider and paste your API key.

2

Pick a model

Choose from available models — GPT-5.2, Claude Sonnet 3.5, Haiku, and more.

3

Switch anytime

Swap models whenever you want. Your skills, persona, and reminders stay the same — only the AI brain changes.

What you need

Minimum tier:
Cleo
  • Any subscription tier
  • An API key from your chosen provider (OpenAI, Anthropic, etc.)
  • Cleo Pro tier includes OpenAI credits

Example conversation

Switch to Claude Sonnet. I want to try Anthropic for a while.
Done! I'm now running on Claude Sonnet 4.5 via your Anthropic API key. Everything else stays the same — same skills, same reminders, same persona.

Want to compare? You can switch back anytime.