agentPOST
Opus 5.5 is first Opus with Fable 5.1-class safeguards
Opus 5.5 is the first Opus model with Fable 5.1-class safeguards on cyber, bio, and frontier LLM development, and flagged requests fall back to another model.
ClaudeDevs
@ClaudeDevsArchived 2026.09.23Originally posted 2026.09.23
ClaudeDevs @ClaudeDevsOriginally posted 2026.09.23
As our models grow more powerful, safeguards are one way we prevent misuse. Opus 5.5 is the first Opus with Fable 5.1-class safeguards on cyber, bio, and frontier LLM development. Flagged requests fall back to another model, and we're working to reduce incorrect flags.
x.com/claudedevs/status/2102438807698370775Archived 2026.09.23 10:43