OpenAI

gpt-5.6-terra

openaimodel ID gpt-5.6-terra-63%

gpt-5.6-terra costs $0.74 per million input tokens and $4.44 per million output tokens through the KoRouter API — 63% below OpenAI's official rate, pay as you go with credits.

  • Context window922K input tokens
  • Input modalitiestext, image, file
  • Output modalitiestext

Call it in one request

curl · gpt-5.6-terra
curl https://korouter.ai/v1/chat/completions \
  -H "Authorization: Bearer sk-your-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.6-terra",
    "messages": [{ "role": "user", "content": "Hello" }]
  }'

Replace sk-your-key with a key from the console. Model IDs are bare names — see the docs and per-tool setup guides.

Supported parameters

max_tokensmax_completion_tokensreasoningreasoning_effortinclude_reasoningtoolstool_choiceparallel_tool_callsresponse_formatstructured_outputsweb_search_options

More models

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Prices use the live billing catalog · live availability · all models