smolagents vs Hugging Face Agents vs Pydantic AI vs AgentOS
A side-by-side look at scores, pricing and features — with RECATOOLS' ASEAN-aware verdict for each.
smolagents
Hugging Face's minimalist agent library where agents write their actio...
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Hugging Face Agents
Hugging Face's minimal library for code-writing agents
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Pydantic AI
Type-safe Python agent framework built by the Pydantic team
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| RECATOOLS Score | 7 / 10 | 6.6 / 10 | 8.2 / 10 | 6.9 / 10 |
| Capability | — | |||
| Value for money | — | |||
| Ease of use | — | |||
| ASEAN readiness | — | |||
| API quality | — | |||
| Pricing | Open Source | Open Source | Open Source | Open Source |
| Free tier | Fully free and open-source (Apache-2.0); works with any supported LLM backend. | Free and open source — self-host at no cost | Free and open source — self-host at no cost | Free and open source — self-host at no cost |
| Paid from | — | — | — | — |
| Has API | ✗ | ✗ | ✓ | ✓ |
| Open source | ✓ | ✓ | ✓ | ✓ |
| Free to use | ✓ | ✓ | ✓ | ✓ |
| Users | 28K+ GitHub stars | — | — | — |
| Founded | — | 2024 | — | — |
| Maker | Hugging Face | — | — | — |
| Verdict | What this is for: Building lightweight AI agents that act by writing and running Python code in a sandbox. Who this is for: Developers who want a small, hackable agent framework with minimal abstractions and Hugging Fac... |
smolagents' pitch is that an agent writing actual Python to call tools is more reliable than one emitting structured tool-call JSON that then gets parsed — Hugging Face claims roughly 30% fewer steps and LLM calls versus... |
Pydantic AI is the agent framework built by the team whose validation library already sits inside the OpenAI, Anthropic and Google SDKs, and that pedigree shows: structured output validation and dependency-injected testi... |
AgentOS bets on two ideas most agent frameworks don't touch: agents that write their own TypeScript tools mid-task (an LLM judge reviews the spec, then it runs sandboxed in node:vm before joining the permanent toolkit) a... |
| Full review → | Full review → | Full review → | Full review → |
Comparisons cover up to 4 tools. Scores are RECATOOLS editorial assessments; verify current pricing on each vendor's site.