Claude Opus 5 (Fast)
Anthropic released 2026-07-24 proprietary
$20.00 per million tokens, balanced
No independent quality score.
No benchmark we track has measured this model. That is not the same as measuring it and finding it wanting — we simply cannot rank it, so we do not.
Every price dimension
| Input | $10.00/M |
|---|---|
| Output | $50.00/M |
| Cached input | $1.00/M |
| Cache write | $12.50/M |
| Cache write 1h | $20.00/M |
| Web search | $0.01/call |
Independent scores
No independent benchmark has measured this model.
Capability
| Context window | 1M |
|---|---|
| Max output | 128K |
| Input modes | text, image, file |
| Tool use | yes |
| Reasoning | optional |
| Open weights | no |
Provenance
| Price source | openrouter.ai |
|---|---|
| Fetched | 2026-08-24 |
| Quality data | unrated |
| Cross-checked | vendor page |
Fast-mode variant of [Opus 5](/anthropic/claude-opus-5) - identical capabilities with higher output speed at 2x pricing relative to regular Opus 5. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode