# GPT-5.5 Pro

**Provider:** openai
**Released:** 2026-04-24
**License:** proprietary
**Context window:** 1,050,000 tokens
**Modalities:** text, vision

**Pricing** (as of 2026-05-09):
- Input: $30/M tokens
- Output: $180/M tokens

## Timeline

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## Sources
- https://openrouter.ai/api/v1/models