Anthropic ships Opus 4.7: what changes for those of us building with AI

New tool use capabilities, context handling and output speed. The three things that actually change daily work.

Anthropic shipped Claude Opus 4.7 on May 22. On paper it's "just" a point release after 4.6 in March, but in practice it's the version that moves production agents from "interesting" to "weekly-reliable."

Three things stood out to me: (1) parallel tool use is much more stable, agents no longer get lost in the middle of 10+ tool-call chains, (2) context handling at millions of tokens without quality degradation, (3) streaming output latency reduced by roughly 30%.

For what I do (Aima runs on Claude), this means longer overnight workflows without supervision, denser code reviews and far fewer "the model got confused after step four." I'm already migrating all my production agents.

For anyone evaluating an entry into the agentic world right now, this is the version to start from. 4.8 looks around the corner but 4.7 is the first Opus you'd use without reservations.