Vercel AI Updates: July 25, 2026

1. Claude Opus 5 Lands On The Vercel AI Gateway

Vercel. Vercel made Anthropic’s Claude Opus 5 available through the AI Gateway, giving developers access to the model without managing a separate provider account. Vercel highlights its agentic coding strengths, elevated cybersecurity safeguards, and configurable reasoning effort that ranges from minimal to extra-high. The model is reachable through the AI SDK like other Gateway models. Source

2. AI SDK Ships Harness Package Updates

Vercel. Vercel published a batch of patch releases across the AI SDK harness packages, including harness, harness-codex, harness-claude-code, harness-opencode, and the sandbox and workflow-harness modules. The updates remove a broken bridge channel.interrupt() layer and improve telemetry reporting during multi-step operations. Developers using the agent harness can pick up the fixes by upgrading to the latest package versions. Source