At a Glance · AI-generated

Anthropic released Claude Opus 4.8 on May 28, positioning the new model as a modest but tangible improvement that outperforms GPT-5.5 on most benchmarks. The update introduces a dynamic workflow tool supporting up to 1,000 subagents, a cheaper fast mode, and enhanced error acknowledgment capabilities. Concurrent with the release, Anthropic announced $65 billion in new funding and signaled plans to develop Mythos-class models for broader customer access.