Pydantic AI
Agent framework from the Pydantic team — type-safe and Pythonic
Verdict
Clean, type-safe agent builder from the team behind Pydantic. Result validators, dependency injection, and structured outputs feel natural. Best for Python teams wanting minimal magic.
Other Frameworks & SDKs
- DSPyStable
Stanford framework for programming (not prompting) LMs
- GuidanceExperimental
Microsoft's constrained generation library for structured LLM output
- HaystackStable
Deepset open-source NLP framework for production LLM pipelines
- InstructorProduction
Structured outputs from LLMs using Pydantic schemas
- LMQLExperimental
Query language for LLMs — SQL-like syntax for constrained generation
- LangChainProduction
Composable LLM application framework — chains, agents, RAG