What happened?

All requests through openrouter/moonshotai/kimi-k2.6 fail with a 400 from the provider, even on a bare invocation with no tools, skills, extensions, prompt templates, or context files. Direct curl to the same OpenRouter endpoint with the same model works fine, which suggests Pi is sending a payload shape Moonshot's tokenizer rejects.

   Error: 400 Provider returned error
   {"error":{"message":"Invalid request: tokenization failed","type":"invalid_request_error"}}

Steps to reproduce

Try with Pi, observe 400 error

pi --no-extensions --no-skills --no-context-files --no-prompt-templates --no-tools \
      --provider openrouter --model moonshotai/kimi-k2.6 \
      -p "ping"

Try with curl direct to openrouter, observe successful response

curl https://openrouter.ai/api/v1/chat/completions \
     -H "Authorization: Bearer $OPENROUTER_API_KEY" \
     -H "Content-Type: application/json" \
     -d '{"model":"moonshotai/kimi-k2.6","messages":[{"role":"user","content":"ping"}]}'

Expected behavior

Kimi K2.6 via openrouter should work in Pi

Version

0.77.0