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GPT-5.6 Terra Pro

OPENAI Developer Architecture Profile

OpenRouter ↗HuggingFace ↗
Intelligence (ELO)1479Chatbot Arena Verified
Max Context1,050,000Tokens
API Cost / 1M$17.50Blended Prompt + Completion

Model Capabilities

  • Coding & Logic
  • Fictional
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

Granular Pricing Matrix

Input Tokens (Prompt)$2.50 / 1M
Output Tokens (Completion)$15.00 / 1M

Pricing data via OpenRouter. Sync: 7/9/2026

Evaluate Competitors

VS Engine MatchupGPT-5.6 Terra Pro vs OpenAI: GPT-5.6 TerraVS Engine MatchupGPT-5.6 Terra Pro vs Anthropic: Claude Opus LatestVS Engine MatchupGPT-5.6 Terra Pro vs OpenAI: GPT-4o (2024-05-13)VS Engine MatchupGPT-5.6 Terra Pro vs Google: Nano Banana Pro (Gemini 3 Pro Image)VS Engine MatchupGPT-5.6 Terra Pro vs Anthropic: Claude Fable LatestVS Engine MatchupGPT-5.6 Terra Pro vs OpenAI: GPT-5.2 Chat