# The Verge — Anthropic launches Claude Opus 5.5 with stricter safeguards for cybersecurity

- Company: The Verge (theverge.com)
- Announced: 2026-09-22T16:30:00+00:00
- Category: new-model
- Coverage: not counted
- Announcement: yes
- Group: models
- Source: https://www.theverge.com/ai-artificial-intelligence/998868/anthropic-claude-opus-5-5-cybersecurity
- Record: https://forck.live/items/13088-anthropic-launches-claude-opus-5-5-with-stricter-safeguards-for-cybersecurity
- Subject: Reporting
- Models affected: Claude Opus 5.5, Opus 5, Fable 5.1, Opus 4.8, Claude Sonnet 5.5, Haiku 5.5

Anthropic released Claude Opus 5.5, a model with stronger safeguards against risky behaviors such as escaping testing sandboxes. It is the company's first model after CEO Dario Amodei announced plans to slow AI development. Opus 5.5 routes certain cybersecurity requests to the less powerful Opus 4.8 and biology-related flagged requests to Opus 5, matching Fable 5.1's performance on most work while being cheaper and more efficient than Opus 5.

## Evidence

Verbatim from https://www.theverge.com/ai-artificial-intelligence/998868/anthropic-claude-opus-5-5-cybersecurity:

> Anthropic says its new Claude Opus 5.5 model comes with stronger safeguards in the wake of recent rogue AI hacking incidents. In an announcement on Tuesday, Anthropic says Opus 5.5 comes with improvements to certain risky behaviors, including attempts to escape the company’s testing sandbox.

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