Vercel AI SDKvsLiteLLM

Full side-by-side comparison — features, pricing, platforms, and which one wins in 2026.

Vercel AI SDK

Developer Tools

TypeScript toolkit for building AI-powered web applications

Full review →Website ↗

LiteLLM

LLM APIs & Inference

Unified API proxy for 100+ LLM providers — one interface, any model

Full review →Website ↗
FeatureVercel AI SDKLiteLLM
CategoryDeveloper ToolsLLM APIs & Inference
PricingFree (open-source)Free (open-source), hosted proxy available
GitHub Stars
12k
✓ More stars
16k
PlatformsWebLinux, macOS, Docker
Key Features
  • ✓ React hooks
  • ✓ Streaming
  • ✓ Multi-model
  • ✓ Tool calling
  • ✓ Structured output
  • ✓ Edge runtime
  • ✓ Unified API for 100+ LLM providers
  • ✓ Load balancing across multiple API keys/providers
  • ✓ Automatic fallbacks when providers fail
  • ✓ Spend tracking and budget alerts per team/project
  • ✓ Rate limiting and retry logic built-in
  • ✓ OpenAI SDK compatible — zero code changes
  • ✓ Self-hostable proxy server
  • ✓ Supports streaming, function calling, vision
Pros
  • + First-class React/Next.js integration
  • + Built-in streaming support
  • + Multi-provider (OpenAI, Anthropic, local)
  • + Type-safe with TypeScript
  • + One API for 100+ providers
  • + Built-in load balancing and fallbacks
  • + Spend tracking and rate limiting
  • + OpenAI SDK compatible
Cons
  • − Best suited for Vercel/Next.js ecosystem
  • − Limited outside web context
  • − Adds a proxy layer (slight latency)
  • − Complex config for advanced features
Tags
open-sourcetypescriptreactstreamingsdk
api-gatewaymulti-providerproxyopen-source

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