Access & API

Use LETHE from anywhere.

Every network gets 3 free messages. Connect a wallet for 50 a day, get private tokens that can't be traced back to you, and point any OpenAI- or Anthropic-compatible tool at LETHE.

Access: Guest
Free messages left: …
Private tokens: 0

Connect

Links this network to your wallet for 24 hours and gives you an ltk_ key for other machines.

Connect a wallet

Sign once with any wallet. No email, no account. You get the daily member limit and a portable key for your terminal.

Get private tokens

Each token pays for one message. They're blind-signed, so LETHE can check one is valid but not who it came from.

0 tokens in this browser

Check a token yourself →

Free

From your allowance

Turn part of today's wallet allowance into tokens. Chat also does this on its own when you run low.

Connect a wallet first (step 1).

USDC · x402

Buy a batch

Pay with USDC on Base or Solana over x402. One payment, then each token is spent on its own.

Coming soon

Terminal

Let lethe-proxy handle it

Keeps a stash of tokens on your machine, tops up in the background, and spends one per call.

LETHE_API_KEY=ltk_… \
  npm run lethe:proxy

Or set LETHE_EVM_PRIVATE_KEY / LETHE_SOLANA_PRIVATE_KEY to buy with USDC.

Point your tool

One base URL. Tool calling, streaming and image input pass straight through, unlogged.

Simplest. Every call carries your ltk_ key.

infer.sh

curl https://asklethe.ai/v1/chat/completions \

-H "Authorization: Bearer $LETHE_API_KEY" \

-H "Content-Type: application/json" \

-d '{

"model": "lethe",

"messages": [{ "role": "user", "content": "…" }]

Reference

Full API docs →

Models

letheTextLETHE private text model. 1M context. Text only.

lethe-visionMultimodalLETHE private multimodal model. Image and video input.

Claude Code's default model ids (opus / sonnet / haiku) map to lethe automatically.

Endpoints

GET	/v1/models	Public model list
GET	/v1/models/{id}	lethe or lethe-vision
POST	/v1/chat/completions	OpenAI chat
POST	/v1/responses	OpenAI responses
POST	/v1/messages	Anthropic messages

Stateless: LETHE keeps no conversation history, so send the full message list each time.

Rate limits

Guest

3 messages

Lifetime, per network. No key required.

Member

50 messages / day

Resets 00:00 UTC. Bound to a wallet via a ltk_… key.

Send Authorization: Bearer ltk_…, x-api-key: ltk_… or a PrivateToken. Responses include X-Lethe-Remaining. Machine-readable reference: /llms.txt.