Summary
Anthropic launched Claude Opus 5 on July 24, priced at $5 per million input tokens and $25 per million output tokens, unchanged from Opus 4.8. On Frontier-Bench v0.1, Opus 5 outperforms all existing models, achieving over twice the performance of Opus 4.8 with lower per-task cost. On CursorBench 3.…
Key points
- Developers can access near-frontier model capabilities with the same budget and adjust costs per task via effort settings; Claude Max users get the upgrade by default.
- Doubling Opus 4.8 performance at the same price and delivering near-Fable 5 ability at about half the per-task cost directly shifts the cost-performance calculus for daily development choices.
- Teams using agentic tools like Claude Code or Codex should reassess default models and effort settings; for high-risk security scenarios, note Opus 5 still lags behind Mythos 5.
- This is Anthropic's fourth model in two months, following Fable 5 in early June and Sonnet 5 in late June.
Editorial note
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