Introducing Claude Opus 5

Brief

Claude Opus 5, announced 2026-07-24 on r/ClaudeAI by u/ClaudeOfficial, is presented as a more efficient and cheaper near-frontier model: Anthropic claims SOTA results on coding and knowledge-work benchmarks, near-Fable 5 intelligence at about half the cost, a ~2.5× Fast mode, and improved alignment per an automated audit. The Reddit post includes no community comments.

Key details

Anthropic claims Opus 5 achieves near-Fable 5 'frontier' intelligence at roughly half the price, sets new state-of-the-art on several coding and knowledge-work evaluations, and improves efficiency/cost-per-task; Opus 5 also offers a Fast mode that runs ~2.5× the default speed.

An automated behavioral audit reportedly found Opus 5 has the lowest rates of reckless or deceptive behavior and the strongest adherence to Claude’s Constitution among Anthropic models.

Introducing Claude Opus 5: a thoughtful and proactive model that comes close to the frontier intelligence of Fable 5 at half the price.
On several coding and knowledge work evaluations, Opus 5 is the new state-of-the-art. It’s also much more efficient than its predecessor—it outperforms other models for a similar or lower cost per task.
According to our automated behavioral audit, Opus 5 is our most aligned model to date. It shows the lowest rates of reckless or deceptive behavior, and the strongest adherence to Claude’s Constitution.
It’s available today on all paid plans and the Claude API, priced the same as Opus 4.8. It’s the default model on Claude Max, and the strongest on Claude Pro.
Opus 5 is also available in Fast mode, which runs around 2.5× the default speed.
Read more: https://www.anthropic.com/news/claude-opus-5

Link: https://www.reddit.com/gallery/1v5h6o9

Subreddit: r/ClaudeAI

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