Unverified50% confidenceEventExact time
claude.dev has compiled a practical playbook for Opus 5.5 in the Claude Code environment.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/4/2026
First Seen
Valid until: 1/2/2027
Sources
Related Entities
Related Claims
UnverifiedClaude Code v2.1.280 introduces the new Claude Opus 5.5 model (claude-opus-5-5) and sets it as the default Opus model.71% similarUnverifiedOpus 5 is the flagship model of Anthropic's Claude series, known for its longer context window (capable of handling codebases of hundreds of thousands of tokens) and more cautious output style.70% similarUnverifiedA developer used Anthropic's Opus 5.5 model to create a playable Pokémon battle demo.69% similar
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