Claude Opus 5
A versatile model, balanced across most use cases.
Overview
Claude Opus 5, released July 24 2026, replaces Opus 4.8 at identical pricing ($5/$25 per million tokens) while approaching Claude Fable 5 performance at half the cost. 1M-token context (both default and maximum, no long-context premium), 128K max output, May 2026 knowledge cutoff — the freshest in the Claude lineup. Thinking runs by default. Five effort settings (low to max) trade intelligence against token spend. Anthropic describes it as its most aligned model to date. Leads the Artificial Analysis Intelligence Index at 61.
Skill profile
Not disclosed
Strengths
- World-class on Arena
- Very long context
Limitations
- High output cost
- No native GDPR guarantee
Who is it for
- your budget is tight
- you handle sensitive EU data
Access & availability
Key specifications
Estimate your monthly cost
Per-token API pricingFor the same usage
- Muse Spark 1.1$68-79%
- GPT-5.6 Sol$363+11%
- Claude Fable 5$654+100%
Indicative estimate based on standard API rates (excluding caching, batch and volume discounts). Always check the official pricing before committing.
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Advanced data · for expertsArchitecture, modalities, detailed cost, full benchmarks▾
| Arena Elo | 1492 |
| MMLU | — |
| GPQA | — |
| HumanEval | — |
| SWE-Bench | — |
| MATH | — |