OpenAI: GPT-5.6 Terra Pro
openai/gpt-5.6-terra-pro
Context: 1,050,000In: $1.00/1MOut: $6.00/1M
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
Intelligence
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Coding
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Agentic
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Metric profile
Trend over time
No history yet — first sync only. Trends appear over time.
Classic evals (curated from model cards)
OpenAI GPT — manually maintained, may lag releases
MMLU-Pro
79.6%
GPQA Diamond
81.5%
HumanEval
96.8%
MATH-500
93%