GPT-5.5
OpenAI
76.0#23 of 427 overall
- Input / output
- US$ 5,00 / US$ 30,00 US$ per 1M tokens
- Context
- 1.1M tokens
- Release
- 04/24/2026 release date
- Weights
- Closed
- Speed
- 0 tok/s first token in 0.00 s
Family history
The 8 versions of this family, from first to newest, by release date. Click a point to open that version.
Scores by source
Scores by sourcepercentile = % of ranked models it beats| Metric | Value | Percentile | Source |
|---|---|---|---|
| Arena text (Elo) weight 2 | 1472 | 87% | LMArena |
| Arena WebDev (Elo) weight 1 | 1512 | 57% | LMArena |
| Arena vision (Elo) weight 0.5 | 1297 | 85% | LMArena |
| Humanity's Last Exam weight 1 | 45.8 | 95% | Artificial Analysis |
| Terminal-Bench weight 1 | 14.6 | 77% | Artificial Analysis |
| GPQA Diamond | 93.5 | 98% | Artificial Analysis |
| Long-context reasoning | 84.3 | 99% | Artificial Analysis |
By category
| Category | Score | Rank | Metrics |
|---|---|---|---|
| Agentic | 63.5 | #26 | Terminal-Bench |
| Coding | 53.5 | #47 | Arena WebDev (Elo) |
| Reasoning | 81.0 | #9 | Humanity's Last Exam, GPQA Diamond |
| Research | 74.5 | #7 | Long-context reasoning |
| Design | 53.5 | #46 | Arena WebDev (Elo) |
| Chat | 68.3 | #27 | Arena text (Elo) |
| Vision | 67.4 | #17 | Arena vision (Elo) |
History
RankingIA score on each collection day (hover to see the rank).
Daily collection started on 10/30/2026. The chart appears from the second day the model is ranked.