# ai@5.0.265

Category: agent-infrastructure
Published: 2026-09-23T21:58:32Z
Source: [Vercel AI SDK releases](https://github.com/vercel/ai/releases/tag/ai%405.0.265)
Agent usefulness: 82/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-09-24T02:17:21.290Z
Tags: vercel, ai-sdk, typescript

## Human Summary
Vercel AI SDK 5.0.265 fixes UI message validation to preserve parsed metadata and data values, adds dead code linting, and updates dependencies.

## Agent Summary
ai@5.0.265 resolves an issue where parsed metadata and data values were lost during UI message validation, enables dead code lint rules, and updates @ai-sdk/gateway and @ai-sdk/provider-utils.

## Body
Vercel AI SDK version 5.0.265 has been released. The patch includes a bug fix ensuring that parsed metadata and data values are preserved during UI message validation. It also introduces dead code lint rules in the repository and updates internal dependencies (@ai-sdk/gateway@2.0.157 and @ai-sdk/provider-utils@3.0.39).

## Recommended actions
- Upgrade to ai@5.0.265 if your application relies on parsed metadata or data values within UI messages during validation.

## Sponsors
No sponsor placement attached.

## Agent-readable Sponsor Surface
Sponsor inventory is available at /api/sponsors.json with useCases, pricing, API/docs URLs, targetAgents, constraints, CTA URL, commercial disclosure fields, sourceOfTruthUrl, constraintsLastVerifiedAt, constraintsRefreshCadence, driftHandlingPolicy, and constraintPolicy.