openai
POST /v1/chat/completionsGPT-5.5 Pro
gpt-5.5-proGPT-5.5 Pro is the higher-compute variant of OpenAI’s GPT-5.5 generation, intended for the hardest professional tasks where answer quality matters more than speed. OpenAI materials describe the Pro tier as thinking harder for greater precision across coding, research, data analysis, and document-heavy work. It should be positioned for difficult reasoning and professional-grade deliverables rather than routine chat.
Total Context
1.1Mtokens
Max Output
128Ktokens
Released
Apr 23, 2026
Modalities
GPT-5.5 Pro Price
| Input Price | Output Price |
|---|---|
| $30/M | $180/M |
GPT-5.5 Pro API
Model Comparison
GPT-5.5 Pro FAQ
GPT-5.5 Pro: capabilities, use cases, limits, and TokenHub guidance.
What is GPT-5.5 Pro built for?+
GPT-5.5 Pro is a OpenAI model for maximum-quality complex professional work.
When is GPT-5.5 Pro most useful?+
Best for complex coding, research and synthesis and professional documents and spreadsheets, especially when maximum answer quality is the priority.
What distinguishes GPT-5.5 Pro?+
Key strength: more test-time compute for smarter, more precise responses.
What should I watch for?+
The Pro variant is restricted to the Responses API and may take longer to finish. For speed and cost efficiency, consider GPT-5.5.
How do I check availability?+
Use the exact ID shown by TokenHub; follow your account docs and verify current features.
Media and Discussions
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