Anthropic
Claude Opus 5
Released
2026-07-24
License
proprietary
Context window
1,000K tokens
Knowledge cutoff
2026-05
Pricing
$5.00 in / $25.00 out per 1M tokens — official pricing
In plain English: Successor to Claude Opus 4.8 at the same $5/$25 price. New low/medium/high 'effort' toggle (defaults high). Anthropic positions it as 'close to the frontier intelligence of Claude Fable 5 at half the price'. Max output 128k (300k via batch beta).
Benchmark scores
| Benchmark | Score |
|---|---|
| 🧠 Reasoning(no tools) | 54.9independent |
| 🛠️ Long-horizon coding | 74.0independent |
| 🐛 Bug fixing | 97.0independent |
| ⌨️ Contest coding | 89.0independent |