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OpenAI

GPT-5.6 Terra Pro

openai/gpt-5.6-terra-pro · rates as of · Benchmarks · Plans · Calculator

GPT-5.6 Terra Pro is the same underlying model as [GPT-5.6 Terra](https://openrouter.ai/openai/gpt-5.6-terra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode

Cheapest input
$1
$/MTok · OpenRouter
Cheapest output
$6
$/MTok
Context
1.1M
tokens
Offers
2
2 sources

Offers

Same model, different listings. First-party, router, and aggregator rows stay separate so you can see the spread instead of a single blended number.

SourceProviderInputOutputCache readContext
OpenRoutercheapestopenai/gpt-5.6-terra-proOpenRouter$1$6$0.11.1M
models.devopenai/gpt-5.6-terra-proKilo Gateway$2$12$0.21.1M

Capabilities

  • Reasoning
  • Tool calling
  • Structured output
  • Attachments
  • In: text
  • In: image
  • In: pdf
  • In: file
  • Out: text
Knowledge cutoff: 2026-02-16Released: 2026-07-09Family: gpt-terra

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