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Luu, T.J.

Anthropic releases Opus 5 with ‘close’ to Fable 5’s capabilities

infonewsLLM-Specific

industry

Source: The Verge (AI)July 24, 2026

Summary

Anthropic released Claude Opus 5, a new AI model that performs nearly as well as Claude Fable 5 (a more powerful model that was temporarily taken offline due to government concerns about its capabilities) and shows particular strength in complex coding tasks. Fable 5 was brought back online with enhanced cyber safeguards (security measures to protect against attacks) after negotiations with the US government.

Classification

Attack SophisticationModerate

AI Component TargetedModel

Affected Vendors

AnthropicOpenAI

Related Issues

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Monthly digest — independent AI security research

Original source: https://www.theverge.com/ai-artificial-intelligence/970105/claude-opus-5-announced-anthropic-ai-model-release

First tracked: July 24, 2026 at 02:01 PM

Classified by LLM (prompt v3) · confidence: 85%