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Claude Code Max Support Begins Through AI Gateway

·2026.01.26 22:00

Key point

Vercel AI Gateway now supports Claude Code Max, providing integrated observability and usage tracking while keeping your existing subscription.

Details

Vercel AI Gateway has begun supporting Claude Code Max subscriptions for the Claude Code CLI. This allows developers to leverage their existing Anthropic model subscription at no additional cost, while enjoying integrated observability, usage tracking, and monitoring features through the Vercel platform.

Setup is simple. You just need to set an environment variable in your shell configuration file (~/.zshrc or ~/.bashrc). At this point, you need to enter your actual AI Gateway API key in the x-ai-gateway-api-key header.

Here's how it works:

  • Claude Code authenticates directly with Anthropic and sends an Authorization header.
  • AI Gateway handles its own authentication using a separate x-ai-gateway-api-key header, allowing the two authentication mechanisms to coexist.
  • AI Gateway acts as a passthrough proxy to Anthropic, or as a router connecting to other providers when needed.
observabilityvercelanthropicclaude-codecliai-gateway
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