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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 (with ANTHROPIC_BASE_URL)

3. Pick a model

Use lethe 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()
Every call is stateless. LETHE does not store conversation history server-side for API requests. Send the full message list each time.