OpenAI, language model
GPT-5.5 Pro
Released Apr 23, 2026. Scored on 4 boards.
163Epoch Capabilities IndexRank 10 of 34
- Released
- Apr 23, 2026
- Price, in / out
- $30.00 / $180.00
- per 1M tokens, list price
- Blended price
- $67.50
- 3 input tokens per output token
- Output speed
- n/a
- Context
- 1.05M
- tokens
- Open weights
- No
Scores
The latest published score on each board, ranked against every model we track. Each score links to its source.
| Board | Score | Rank | Record | Date | Source | Readings |
|---|---|---|---|---|---|---|
| Epoch Capabilities IndexOverall | 163 | 10 of 34 | 169Claude Opus 5.5 | Apr 23, 2026 | epoch.ai | 1 |
| ARC-AGI-2Reasoning and knowledge | 84.6%high setting | 12 of 33 | 95.0%GPT-6 Astra | Apr 23, 2026 | epoch.ai | 1 |
| FrontierMath Tiers 1-3Reasoning and knowledge | 87.7%xhigh setting | 8 of 36 | 93.7%GPT-6 Astra | Apr 23, 2026 | epoch.ai | 1 |
| GPQA DiamondReasoning and knowledge | 93.9%xhigh setting | 13 of 32 | 96.4%Gemini 4 Argon | Apr 23, 2026 | epoch.ai | 1 |
Compare with
The closest models on the boards they share with GPT-5.5 Pro.
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