Anthropic launches Claude Opus 5, saying it nears Fable 5 on many tasks

The Verge AI · rss · 2026-07-25

Anthropic has released Claude Opus 5, saying it comes “close” to Claude Fable 5 in many domains and is significantly better at complex coding tasks.

• The launch comes weeks after Anthropic’s run-in with the U.S. government and days after an OpenAI security incident that had the industry talking.
• The company is positioning Opus 5 as a major upgrade, especially for harder software engineering work.
• The announcement also lands in the shadow of Fable 5, the public-facing Mythos-class model that was briefly taken offline and later returned with tighter cyber safeguards.

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