Mini toolsOpus 5
On coding and knowledge work benchmarks, Opus 5 sets a new high mark for the Opus tier, more than doubling Opus 4.8's score on Frontier-Bench and landing within half a percent of Fable 5's best CursorBench result, at roughly half the cost per task. It also triples the next best model's score on ARC-AGI 3, a test of solving genuinely novel problems.
The model shows clear gains in scientific work too, particularly organic chemistry and protein function prediction, and produces noticeably better visual output for things like diagrams, slides, and interactive builds.
Beyond raw scores, early access users highlight Opus 5's judgment: it verifies its own work, catches mistakes during planning rather than after the fact, and handles long, open ended tasks with less hand holding than earlier models.
Overview
Claude Opus 5 is Anthropic's new Opus flagship, released July 24, 2026. It's noticeably stronger at coding, research, and long, multi step tasks than Opus 4.8, at the same price, and comes close to Anthropic's top tier model (Fable 5) at half the cost.
About Anthropic
Anthropic is a technology company specializing in artificial intelligence and machine learning solutions.
Tools using Opus 5
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Claude — v5
Claude Opus 5
Coding and long, multi step tasks: big jump over Opus 4.8, close to Anthropic's top tier model (Fable 5) at half the cost.
Science and research: stronger at chemistry and biology related tasks.
Visuals: better looking charts, diagrams, slides, and interactive content.
Judgment: better at catching its own mistakes and fixing them without you having to point it out.
The strongest model available on Claude Pro.
Also usable via the API as claude-opus-5.
