95/100
Pydantic AI
Pydantic · Python · pydantic/pydantic-ai
Type-first agent framework that treats durability and OpenTelemetry as architecture, not integrations.
- control 3
- state 4
- tools 4
- reliability 4
- observability 4
- developer 4
Frameworks
4 frameworks, each assessed across six weighted architecture axes. Deliberately a short list: every entry is fully evidenced rather than listed.
89/100
LangGraph
LangChain · Python · langchain-ai/langgraph
Low-level graph runtime for long-running, stateful agents, with checkpointing as a first-class primitive.
- control 4
- state 4
- tools 3
- reliability 4
- observability 3
- developer 3
86/100
OpenAI Agents SDK
OpenAI · Python · openai/openai-agents-python
Small primitive set — agents, handoffs, guardrails, sessions — with tracing built in rather than bolted on.
- control 3
- state 3
- tools 4
- reliability 4
- observability 4
- developer 3
80/100
CrewAI
CrewAI Inc. · Python · crewAIInc/crewAI
Role-based crews for delegation-shaped work, plus a decorator flow layer and event-driven checkpointing.
- control 3
- state 4
- tools 3
- reliability 3
- observability 3
- developer 3