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OpenAI

GPT-5.6 Luna

The fast, light GPT-5.6 — cheap agents and high-volume coding.

GPT-5.6 Luna is the fast, low-cost tier of the GPT-5.6 line: keeps solid coding ability for sub-agents, high-volume tasks and latency-sensitive work where Sol/Terra would be overkill.

Best for

Sub-agentsHigh volumeLatency-sensitive

Strengths

  • ▸Very cheap
  • ▸Very fast
  • ▸Solid coding

Use GPT-5.6 Luna via AnyModel

One OpenAI-compatible endpoint — just set the model id:

curl https://anymodel.org/v1/chat/completions \
  -H "Authorization: Bearer $ANYMODEL_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.6-luna",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'
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