Vercel AI SDK
Vercel's TypeScript LLM SDK — streaming, tool calls, structured outputs, agents. Dominant framework for Next.js LLM apps.
At a glance
- Type
- TypeScript LLM toolkit
- Tier
- T1
- Created
- 2023
- Latest release
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- License
- Apache-2.0
- GitHub
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- Pricing
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- Funding
- Part of Vercel — Vercel raised $250M Series E 2024-05 ($3.25B valuation; Accel led).
Taxonomy
- storage
- n/a
- retrieval
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- persistence
- n/a
- update
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- unit
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- governance
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- conflict
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When to use
Optimised for: searched not found
Anti-fit: searched not found
Pros & cons
Pros
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Cons
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Claims & capabilities
~11k★; default LLM SDK in the Next.js ecosystem.
Technical surface
- API surface
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- Backend storage
- not applicable — not a memory product
- Deployment
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- Embedding model
- not applicable — not a memory product
- Multi-tenancy
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- MCP
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- A2A
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- OpenTelemetry
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Similar systems
Other agent frameworks (no first-party memory layer) in the catalog, ranked by inbound references.
- Model Context Protocol (MCP spec) T1
Anthropic-introduced open protocol (Nov 2024) for connecting LLMs to data sources and tools. Now standard across Anthropic, OpenAI, Microsoft, Cursor, Continue, IDEs, etc.
- LangChain (framework) T1
Dominant Python/JS framework for LLM apps — tool calling, agents, retrievers, runnables. Memory is one component (LangMem cross-listed); the framework itself is the product.
- LangGraph (orchestration) T1
LangChain's stateful graph runtime for agents — explicit state, persistence, time-travel debugging, human-in-the-loop. Memory is one persistence target (LangGraph Persistence cross-listed).
- LlamaIndex (framework) T1
Data framework for LLM apps — connectors, indices, query engines, agents, workflows. Memory is one of many subsystems (LlamaIndex Memory cross-listed).
- OpenAI Swarm (deprecated) T4
OpenAI Swarm — experimental educational multi-agent framework released Oct 2024; deprecated in favour of the OpenAI Agents SDK in Mar 2025.
- Strands Agents (AWS) T3
AWS-released open-source agent framework — released March 2025; model-driven, simple Agent abstraction. Predecessor of AWS Agent SDK / Bedrock AgentCore.