LibreChat

Another browser chat. The URL lives in yaml.

Three fields. Copy, don’t type

Do it in order. Don’t skip

1. Open librechat.yaml in the folder where LibreChat is deployed.

2. Under endpoints → custom add a block with name, apiKey and baseURL.

3. baseURL: https://cheapai.lol/v1 (with /v1). apiKey: your full key. Under models → default put claude-opus-4.8.

4. Save and restart LibreChat (docker compose restart if it runs in Docker).

5. Pick the model in the chat and type “hi”.

Check

If it didn’t start

• “401 / unauthorized / invalid api key” — the key was not copied whole. It starts with sk- and has no space at either end.
• “model not found” / “named models unavailable” / model in red — the name must match exactly: claude-opus-4.8. Not “Opus 5”, not opus, not claude-3, not gpt-4.
• The app shows no models — reopen its settings page: the model list is served from our address and appears once the Base URL and key are right.
• “Connection error” / spinner and silence — wrong Base URL. Almost every app wants the address with a /v1 tail.
• “/v1/v1” in the error — the app appends /v1 itself. Drop the tail, leave the site address.
• It replied, then stopped — you ran out of tokens. The balance is in your dashboard. Topping up on FunPay from the same nick lands on the same key.

all apps