Anthropic: Claude Opus 4.5
Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding and...
Everything else
| Max output | 64K |
|---|---|
| Input / 1M | $5 |
| Output / 1M | $25 |
| Cache read / 1M | $0.5 |
| Cache write / 1M | $6.25 |
| 1M in + 1M out | $30 |
| Takes | file, image, text |
| Returns | text |
| Tools | yes |
| Reasoning | optional |
| Open weights | no |
| Released | 2025-11-24 |
| Knowledge cutoff | — |
| Retires | — |
| Catalog id | anthropic/claude-opus-4.5 |
Benchmarks
| source | epoch |
|---|---|
| eci | 149.55 |
| 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.