1. Get a key
Every network gets 3 free guest requests with no key at all, use any placeholder string as the key to try it. For the daily member limit (50 messages/day) and a portable key, visit/cli and connect a wallet. You’ll get a key that looks like ltk_….
2. Point your tool at LETHE
The base URL is drop-in for anything OpenAI- or Anthropic-compatible:- OpenAI-style:
https://asklethe.ai/v1 - Anthropic-style:
https://asklethe.ai(withANTHROPIC_BASE_URL)
3. Pick a model
Uselethe for text, lethe-vision for image/video input. See Models. Claude Code’s default model ids (opus, sonnet, haiku) and any claude-* id are automatically aliased to lethe, so Claude Code works with zero model-name changes.
Framework integrations
Claude Code
Anthropic Messages API
Codex CLI
OpenAI-compatible provider
Vercel AI SDK
createOpenAI()
LangChain
ChatOpenAI
CrewAI
LLM()
