Head to head
Vercel AI SDK vs OpenAI Agents SDK
A side-by-side, sourced comparison. Facts come from each vendor’s own materials; scores are our editorial opinion applied by the same rubric to both.
| Dimension | ||
|---|---|---|
| Pricing | The SDK is free and open source (MIT); you pay the underlying model/token costs of whichever provider you route to. Vercel's hosting and AI Gateway are billed separately.source ↗ | The SDK is free and open source (MIT); you pay OpenAI (or the chosen provider's) API/token costs.source ↗ |
| Hosting model | A self-deployed library — you install and run it inside your own app or runtime; it is not a managed service.source ↗ | A self-deployed library (Python, with a TypeScript version too) that runs in your own process and infrastructure.source ↗ |
| Memory & state | Provides message/state and streaming primitives; built-in long-term memory and conversation persistence are left to your own store.Unverified | Sessions provide automatic conversation-history management across agent runs — a persistent working-context layer.source ↗ |
| MCP support | Nativesource ↗ | Nativesource ↗ |
| Integrations | Tool calling, MCP servers and tools, structured object generation, and multimodal (text, speech, transcription, image, video) generation.source ↗ | Built-in tools (web search, file search, computer use via the Responses API), function tools, MCP servers, agent handoffs, and tracing/observability.source ↗ |
| Model providers | Multi-provider by design — Anthropic, OpenAI, Google, xAI/Grok, Mistral, Meta, Perplexity, DeepSeek, and more (16+ providers, 100+ models).source ↗ | OpenAI-first (uses the Responses API by default for OpenAI models) but provider-agnostic — supports 100+ other LLMs via LiteLLM and any-llm adapters.source ↗ |
| Open source | Yessource ↗ | Yessource ↗ |
| Developer experience(opinion) | 5/5 | 4/5 |
| Pricing transparency & value(opinion) | 5/5 | 5/5 |
| Scalability(opinion) | 3/5 | 3/5 |
| Memory & state(opinion) | 2/5 | 3/5 |
| Integrations(opinion) | 4/5 | 4/5 |
| MCP nativeness(opinion) | 4/5 | 4/5 |
The balanced view
Editorial opinion, derived from the scorecard above
Where Vercel AI SDK scores higher
In our rubric, Vercel AI SDK rates ahead on developer experience.
Where OpenAI Agents SDK scores higher
In our rubric, OpenAI Agents SDK rates ahead on memory & state.
These two serve different needs — read the full dossiers for Vercel AI SDK and OpenAI Agents SDK before deciding. Neither has been hands-on tested by us yet.
Product and company names are trademarks of their respective owners and are used here only to identify the products under discussion.