Claude Opus 5 ⌄
Claude Opus 5 ⌄

Chat with Claude Opus 5

Powered by Anthropic.

Deep analysis Anthropic's newest flagship
Build a feature Plan + code + explain
Synthesize documents Long inputs welcome
Long-form writing Consistent voice throughout
About Claude Opus 5 — examples and limitations

Claude Opus 5 is Anthropic's newest flagship: a step-change in deep reasoning, agentic coding and long-horizon work over Opus 4.7.

Claude Opus 5 at a glance

ProviderAnthropic
Access on AskAI.freePremium model; the 7-day Pro trial unlocks access.
Best first testThe hardest reasoning, research and synthesis tasks
Model positionNew model in the Anthropic family.

What makes Claude Opus 5 different

Opus 5 is the Anthropic option for maximum depth: large coding changes, sustained analysis and long documents where omissions are expensive. Its higher credit weight is unnecessary for routine editing. Sonnet 5 should be the default for daily work; move to Opus when the problem, not the brand name, demands it.

What Claude Opus 5 is best for

  • The hardest reasoning, research and synthesis tasks
  • Large coding tasks: multi-file features, refactors and reviews
  • Long-form writing that must stay coherent over big outputs
  • Reading and reasoning over very long documents and codebases
  • High-stakes analysis where quality beats speed

How to use Claude Opus 5

Step 1 Give Claude Opus 5 the complete task up front - full documents, code and constraints in one go - and let it plan and execute rather than drip-feeding pieces.
Step 2 Ask for the deep version: tradeoffs, edge cases, counter-arguments and verification, which is where Opus 5 pulls furthest ahead of smaller models.
Step 3 Use follow-ups to have it cross-check its own output, reconcile contradictions across sources, or extend the work while holding a consistent voice.

Example prompts

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Frequently asked questions

What's new in Claude Opus 5?

Opus 5 is Anthropic's latest flagship, with stronger deep reasoning, markedly better agentic coding, and more reliable long-form output than Opus 4.7.

How does Opus 5 compare to Sonnet 5?

Opus 5 is the premium pick for the hardest tasks; Sonnet 5 delivers near-Opus quality on most coding and writing work at a lower credit cost.

Can Opus 5 handle very long documents?

Yes. Claude models support very large context windows, so Opus 5 can read long reports, contracts or whole codebases before answering.

Is Claude Opus 5 available on the free tier?

One free question per session - no signup needed. Higher usage requires a registered account or Pro plan.

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