this will be one of my favorite competitions for 2026. i've used the AI SDK so much this past year, very excited somebody who knows their shit VERY well is making a competitor :]

-- my links
twitter: https://x.com/joshtriedcoding
github: https://github.com/joschan21

Josh tried coding

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.

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

<p>Yeah, please go ahead and kill Vercel. Replace everything they build like Next.js, AI SDK. Vercel is actually poisonous to the entire open source community</p>
