Anthropic: Claude Opus 4.1
Claude Opus 4.1 is an updated version of Anthropic’s flagship model, offering improved performance in coding, reasoning, and agentic tasks. It achieves 74.5% on SWE-bench Verified and shows notable gains...
Everything else
| Max output | 32K |
|---|---|
| Input / 1M | $15 |
| Output / 1M | $75 |
| Cache read / 1M | $1.50 |
| Cache write / 1M | $18.75 |
| 1M in + 1M out | $90 |
| Takes | image, text, file |
| Returns | text |
| Tools | yes |
| Reasoning | optional |
| Open weights | no |
| Released | 2025-08-05 |
| Knowledge cutoff | 2025-01-31 |
| Retires | — |
| Catalog id | anthropic/claude-opus-4.1 |
Benchmarks
| source | epoch |
|---|---|
| eci | 144.22 |
| confidence | Unknown |
| accessibility | API access |
Benchmark scores by Epoch AI, CC BY 4.0.
Using it
In 00, this model is picked per agent — and per tier, so the model that answers your customers need not be the one that writes your code. Get 00.