CodeRabbit 官方最新动态：Claude Opus 5 review: Coverage, comment quality, and cost

来源：CodeRabbit 官方动态 | 发布日期：2026-06-18

核心更新概览

Anthropic just released Claude Opus 5, the next major version of the Opus family many of us have grown to love (at least until Fable stole the spotlight). It's a good moment to step back and look at h

详细内容记录

Anthropic just released Claude Opus 5, the next major version of the Opus family many of us have grown to love (at least until Fable stole the spotlight). It's a good moment to step back and look at how Opus has evolved across our testing at CodeRabbit. We've put every Opus release on the bench since version 4, so we have a pretty good picture of how it's evolved. Opus 5 is the first release where the story isn't simply "it finds more bugs." (Want the full history? Start with The release is less of a raw-capability bump than it is a shift in how the model is controlled and where it spends its effort. Five changes matter for review and coding work: Effort becomes the primary control. Thinking is on by default and can only be disabled at high or lower effort. Task and effort budgets can now be changed per-turn, mid-conversation without invalidating the cache. Our data backs the framing: Effort was a routing decision — x-high bought a precision gain at a coverage cost, and nothing improved uniformly. The context window moves to 1M tokens as both default and maximum, with performance claimed to hold throughout. This directly addresses the 200k-token degradation we reported on Opus 4.8

更多技术细节可访问官方原文：https://www.coderabbit.ai/blog/opus-5-model-review。