Anthropic: Claude Opus 4.8
Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token...
Everything else
| Max output | 128K |
|---|---|
| Input / 1M | $5 |
| Output / 1M | $25 |
| Cache read / 1M | $0.5 |
| Cache write / 1M | $6.25 |
| 1M in + 1M out | $30 |
| Takes | text, image, file |
| Returns | text |
| Tools | yes |
| Reasoning | optional · max, xhigh, high, medium, low |
| Open weights | no |
| Released | 2026-05-27 |
| Knowledge cutoff | — |
| Retires | — |
| Catalog id | anthropic/claude-opus-4.8 |
Benchmarks
| source | epoch |
|---|---|
| eci | 158.01 |
| confidence | Confident |
| accessibility | API access |
| gpqa | 0.91 |
| gpqaStderr | 0.0192 |
| frontierMath | 0.472 |
| frontierMathStderr | 0.0294 |
| aime | 0.983 |
| aimeStderr | 0.0141 |
| simpleQA | 0.395 |
| simpleQAStderr | 0.0155 |
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.