Data and AI releases

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Server Release 4.9.8

UpdateNot yet verified

Before Upgrading See the CircleCI server 4.9 release notes and upgrade guide for this release. If you mirror images to a private registry or run an air-gapped install, copy the new NGINX image before you upgrade. See Configuration Changes below.

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Also shipped Nov 9, 2026CircleCI in November 2026 →

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Improved commit status links and failure details

We’ve updated the commit statuses CircleCI posts to your VCS to make it faster to see which run failed and why, for both people and AI agents. More descriptive status URLs Status links previously used the format https://circleci.com/{project-slug}/{build-number} .

Update
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Functions now available in beta

CircleCI launched Functions in beta, allowing developers and AI agents to define, version, pin, and reuse CI environment setup modules via CLI and MCP server.

Beta
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Server Release 4.10.2

CircleCI Server 4.10.2 includes security updates to reject compromised certificates and adds new Kong routes for the OAuth authorization server.

Update
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