Claude Opus 5: change AI with Half the Cost

Claude Opus 5 dropped on Friday at half the price of Fable 5, and it's already the default engine on Claude Max, the premium tier on Claude Pro, and live on GitHub Copilot. That is the line worth sitting with. Not the model tier. Not the leaderboard. The fact that near-frontier reasoning just became the option most senior engineers already pay for.

Claude Opus 5 is Anthropic's newest flagship model, and the Claude Opus 5 release features that actually change how a coding agent behaves at 2am are three: proactive reasoning, self-correction, and tool creation. The model is positioned as the workhorse for daily enterprise workloads — autonomous coding, financial modeling, legal research, scientific research — at near-frontier performance and roughly half the operating cost of Fable 5.

---

This is an excerpt. Read the full post at otf-kit.dev/blog/claude-opus-5-cost-revolution — full-stack kits your AI coding agent can actually ship to production. Browse the kits →