A agentindex
Comparison

Pydantic AI vs Smolagents

A like-for-like, spec-level comparison. Both entries are verified against their docs and repo.

Pydantic AI

Type-safe agent framework from the Pydantic team.

  • + Type-safe structured outputs
  • + Clean dependency-injection design
  • − Newer, fewer integrations than LangChain
  • − Python only

Smolagents

Hugging Face's minimalist code-writing agents.

  • + Minimal and easy to reason about
  • + Code-as-action avoids JSON tool schemas
  • − Less orchestration than LangGraph
  • − Executing agent code needs sandboxing
Spec Pydantic AI Smolagents
Category framework framework
License MIT Apache-2.0
Open source Yes Yes
Self-hostable Yes Yes
MCP support Yes Yes
Pricing free free
Starting price BYOK usage cost BYOK usage cost
Models claude, gpt, gemini, byok claude, gpt, gemini, local, byok
Languages python python
GitHub stars 18.0k 28.0k
Last activity 2026-06-25 2026-06-23