Claude Opus 5
Flagship Opus at near-Fable capability for roughly half the price, API-only.
About
Claude Opus 5 launched July 24, 2026 as Anthropic's flagship model, delivering performance near the higher-tier Claude Fable 5 on coding and knowledge work at roughly half the operating cost of the top tier. It set records on ARC-AGI-3 and leads coding evaluations like Frontier-Bench while holding Opus 4.8 pricing.
It introduced Fast Mode for about 2.5x default speed at twice the price, and was later joined by Opus 5.5 at 40% lower cost. As with all Claude flagships, there are no open weights: access is through the Claude API, AWS Bedrock, Google Cloud, and Microsoft Azure.
Specs
Context window
Pricing
Free quota
API access
Weights
Released
Benchmarks
Provider-reported unless a source says otherwise. Benchmarks are marketing-adjacent by nature — treat them as directional.
Use cases
Trust score — 9/10
Scored 9/10 (verified tier, metrics-v1). Evidence: Verified via vendor site/docs/GitHub and reputable coverage, wave 105; Trending score 92/100 from researcher assessment.