Verified change intelligence for developers and founders who run agents. We track consequential releases, pricing, limits, reliability, security, and compatibility—then explain what changed, what could break, and what to do next.
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We separate release-note language from the behavior, policy, price, limit, or compatibility change that matters in practice.
We look for pricing changes, migration risk, reliability regressions, security exposure, and hidden operational limits before recommending an update.
Each report ends with a practical verdict: update, wait, test first, pin a version, change configuration, or ignore the announcement.
Anthropic shipped **Claude Code v2.1.265** on September 8, 2026 at 20:37 UTC, followed **3 hours 18 minutes later** by **v2.1.266** at 23:55 UTC as a targeted regression fix. v2.1.265 is the larger of the two: the release notes list roughly **fifty items** spanning new capabilities, security fixes, operational reliability fixes, and one privacy-relevant telemetry change. v2.1.266 is a single-item hotfix. For a builder who pins Claude Code in CI, in unattended agents, or in shared dev environments, v2.1.265 is the release to read end-to-end before bumping; v2.1.266 is the release to confirm you're on if v2.1.265 broke your setup.
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