Anthropic releases Claude Opus 5 for coding and long-running agents

Large language modelsAgentic AIUnited States

Published: 24 July 2026. Organisation: Anthropic. Claude Opus 5 is available through Anthropic’s products and API under the model identifier claude-opus-5. Base API pricing is US$5 per million input tokens and US$25 per million output tokens; Fast mode is advertised at about 2.5 times normal speed and twice the base price. GitHub began a gradual Copilot rollout.

Why it matters: Anthropic is compressing the price/performance gap between its premium Fable tier and the more broadly deployable Opus tier. Impact: Enterprises gain a new candidate for software engineering, professional analysis and durable agents, but should run their own task-level quality, latency, refusal, safety and cost evaluations. Anthropic’s benchmark and “close to Fable 5” comparisons are company-reported, not independently reproduced. Anthropic · a report · GitHub