Model releaseHigh global significanceConfirmed confidence
Anthropic releases Claude Opus 4.8
Anthropic releases Claude Opus 4.8 with continued gains in coding, agents, vision and professional knowledge work, while reducing unsupported conclusions in long tasks.
What happened
Event details
Anthropic released Claude Opus 4.8 on May 28, 2026. The release continues to strengthen coding, agent tasks, vision understanding and professional knowledge work, with an emphasis on reducing unsupported conclusions in long-running tasks. It was publicly available in Claude, the Anthropic API and major cloud platforms at launch.
Assessment
Why it matters
A published model record with a documented capability or availability change.
74/100Global significance score. Regional effects are recorded only when the evidence supports a meaningful difference.
Availability
Access notes
Publicly available in Claude, the Anthropic API and major cloud platforms from May 28, 2026.