Anthropic Launches Opus 4.8 With Dynamic Workflows Feature

Anthropic released Opus 4.8 on Thursday, just 41 days after Opus 4.7, an unusually fast upgrade cycle likely driven by user disappointment with the previous version and competitive pressure from OpenAI and Google. The model features improved handling of uncertain data, with testers noting it proactively flags input and output issues rather than leaving errors for users to catch. Alongside the model, Anthropic launched Dynamic Workflows in research preview, enabling complex tasks across hundreds of parallel subagents for large-scale operations like codebase migrations. The company also hinted its held-back Mythos model, delayed over cybersecurity concerns, could reach customers within weeks.