The AI SDK Killer is Finally Here... (Tanstack AI)

TanStack AI is a new open-source SDK competing directly with Vercel's AI SDK, offering a unified interface across multiple AI providers (OpenAI, Anthropic, Google Gemini) with automatic type inference and provider-specific options. Built by the team behind React Query, it features multi-provider support, tool calling with automatic execution loops, and framework-agnostic design (React, TypeScript, PHP, Python). The main differentiator is its pure open-source approach with no vendor lock-in or service fees, though it faces an uphill battle against Vercel's established ecosystem that includes AI Elements, accelerator programs, and the AI Gateway.