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Pyyan / Compare / Vercel AI SDK vs OpenRouter vs LiteLLM

Vercel AI SDK vs OpenRouter vs LiteLLM

3 of 5

Routers & Gateways · verified 13 Aug 2026

×VVercel AI SDKVercelcurrent
×OpenRouterOpenRoutercurrent
×BLiteLLMBerriAIcurrent
2 slots left
SpecificationVercel AI SDKOpenRouterLiteLLM
SummaryTypeScript-native provider abstraction.Biggest catalogue, simplest start.The self-hosted standard.
Added latencyNone40–55msSelf-hosted
HostingLibraryManagedSelf
Caching——Redis
CategoryRouters & GatewaysRouters & GatewaysRouters & Gateways
OfficialVercel ↗OpenRouter ↗BerriAI ↗

Highlighted rows are where these differ.

Vercel AI SDK

TypeScript-native provider abstraction.

Best for TypeScript apps.

Full spec sheet →

OpenRouter

  • Consolidated billing across every provider
  • 40–55ms overhead — 5× the alternatives

Best for prototyping.

Full spec sheet →

LiteLLM

  • Budget controls and Redis caching
  • Zero marginal cost, you run it

Best for production.

Full spec sheet →