GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+ token context window (922K input, 128K output) with support for...
Details
| Field | Value |
|---|---|
| id | gpt-5.5-pro-2026-04-23 |
| context_length | 1050000 |
| max_input_tokens | 922000 |
| max_output_tokens | 128000 |
| quantization | unknown |