Categories › Agent frameworks

Best Agent frameworks (2026)

Testing in progress: tools are listed unranked until scores land. See the methodology.

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All 6 picks

#1Testing in progress
LangGraph
Stateful graph-based agent orchestration (LangChain).
Open-source library free (MIT)
Price partly verifiedAgent frameworks
#2Testing in progress
CrewAI
Role-based multi-agent framework and platform.
Open-source framework free (MIT)
Price partly verifiedAgent frameworks
#3Testing in progress
OpenAI Agents SDK
Lightweight framework for multi-agent workflows.
Pricing not yet verified
Price unverifiedAgent frameworks
#4Testing in progress
Microsoft AutoGen
Open-source multi-agent conversation framework.
Pricing not yet verified
Price unverifiedAgent frameworks
#5Testing in progress
Pydantic AI
Type-safe Python agent framework.
Pricing not yet verified
Price unverifiedAgent frameworks
#6Testing in progress
Mastra
TypeScript agent framework.
Pricing not yet verified
Price unverifiedAgent frameworks

Prices as published by each vendor, checked on the date shown. Unverified prices are marked; always confirm on the vendor's page before buying.

Tool	Pricing	Status
LangGraph	Open-source library free (MIT); managed hosting via LangSmith: Developer $0, Plus $39/seat/mo (includes 1 free small serverless deployment), then usage-based	partial, 2026-10-15 (source)
CrewAI	Open-source framework free (MIT); CrewAI platform Basic free (50 workflow executions/mo); Enterprise custom	partial, 2026-10-15 (source)
OpenAI Agents SDK	Not yet verified	unverified
Microsoft AutoGen	Not yet verified	unverified
Pydantic AI	Not yet verified	unverified
Mastra	Not yet verified	unverified