GLM 5.2 Fast available on Baseten

GLM 5.2 Fast is the first model in our new Fast tier on Model APIs: the same GLM 5.2 model weights served on dedicated capacity engineered for higher sustained per-user throughput, built for agentic coding and real-time conversational applications.
It ships as its own model slug with its own pricing and rate limits, behind the same OpenAI-compatible API, so switching is a one-line change. If Fast capacity is temporarily saturated, requests keep serving on standard GLM 5.2 capacity: slower, not failed.

curl https://inference.baseten.co/v1/chat/completions \
  -H "Authorization: Bearer $BASETEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "zai-org/GLM-5.2-Fast",
    "messages": [{"role": "user", "content": "What makes an inference stack fast?"}]
  }'

For more information, see our docs.