GPT-5.5
Current · Released: April 23, 2026
- Context window
- 1.000.000 tokens
- Max output
- 16.384 tokens
- Price input / 1M tokens
- —
- Price output / 1M tokens
- —
Capabilities
- Vision
- Thinking
- Tool use
- Computer Use
- Cache
Benchmark scores
- GDPval
- 84.9
- CyberGym
- 81.8
- MMLU-Pro
- 92.4
- BrowseComp
- 84.4
- Toolathlon
- 55.6
- GPQA Diamond
- 93.6
- SWE-Bench Pro
- 58.6
- FrontierMath T4
- 35.4
- OSWorld-Verified
- 78.7
- FrontierMath T1-3
- 51.7
- SWE-bench Verified
- 88.7
- Terminal-Bench 2.0
- 82.7
Notes
Latest OpenAI flagship, 6 weeks after GPT-5.4. Fewer tokens per task, same latency. API not yet available, ChatGPT and Codex only. Pro variant available.