Claude Opus 4.5
Anthropic
68.1#49 of 427 overall
- Input / output
- US$ 5,00 / US$ 25,00 US$ per 1M tokens
- Context
- 200K tokens
- Release
- 11/24/2025 release date
- Weights
- Closed
- Speed
- 0 tok/s first token in 0.00 s
Family history
The 9 versions of this family, from first to newest, by release date. Click a point to open that version.
See the data as a table
| Model | Released | Score | Rank | AA Intel. | Elo Arena |
|---|---|---|---|---|---|
| Claude 3 Opus | 03/04/2024 | 14.9 | #424 | — | 1262 |
| Claude 4 Opus | 05/22/2025 | 43.8 | #210 | — | 1377 |
| Claude Opus 4.1 | 08/05/2025 | 49.7 | #150 | — | 1419 |
| Claude Opus 4.5 | 11/24/2025 | 68.1 | #49 | — | 1451 |
| Claude Opus 4.6 | 02/04/2026 | 81.3 | #14 | — | 1502 |
| Claude Opus 4.7 | 04/16/2026 | 81.2 | #15 | — | 1490 |
| Claude Opus 4.8 | 05/27/2026 | 77.1 | #20 | — | 1461 |
| Claude Opus 5 | 07/24/2026 | 89.1 | #4 | — | 1508 |
| Claude Opus 5.5 | 09/22/2026 | 93.5 | #1 | 58.4 | 1516 |
Scores by source
Scores by sourcepercentile = % of ranked models it beats| Metric | Value | Percentile | Source |
|---|---|---|---|
| Arena text (Elo) weight 2 | 1451 | 79% | LMArena |
| Arena WebDev (Elo) weight 1 | 1494 | 53% | LMArena |
| Humanity's Last Exam weight 1 | 30.1 | 80% | Artificial Analysis |
| GPQA Diamond | 86.6 | 82% | Artificial Analysis |
| Long-context reasoning | 77.3 | 77% | Artificial Analysis |
By category
| Category | Score | Rank | Metrics |
|---|---|---|---|
| Coding | 51.3 | #53 | Arena WebDev (Elo) |
| Reasoning | 70.6 | #73 | Humanity's Last Exam, GPQA Diamond |
| Research | 63.5 | #73 | Long-context reasoning |
| Design | 51.3 | #51 | Arena WebDev (Elo) |
| Chat | 64.6 | #40 | Arena text (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.