You can now access Anthropic's latest model, Claude Haiku 4.5 using Vercel's AI Gateway with no other provider accounts required. Haiku 4.5 matches Sonnet 4's performance on coding, computer use, and agent tasks at substantially lower cost and faster speeds.
AI Gateway lets you call the model with a consistent unified API and just a single string update, track usage and cost, and configure performance optimizations, retries, and failover for higher than provider-average uptime.
To use it with the AI SDK v5, set the model to anthropic/claude-haiku-4.5:
Read the full changelog at