LangGraph vs Pydantic AI
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
LangGraph is the stronger AI pick in AI Agents: it has a visibility score of 24.4 versus 1.2 for Pydantic AI, and ranks ahead in 100% of the answers that name both.
Choose LangGraph if…
- You want the brand AI engines rank higher (24.4 vs 1.2)
- You need a self-hosted or on-premises option
- You need SOC 2 Type II or ISO 27001:2022 or GDPR or HIPAA coverage
- Production standard for stateful, multi-agent workflows
Choose Pydantic AI if…
- AI answers describe it more positively (100% vs 44% positive)
- Type-safe, production-grade application code
AI visibility side by side
Latest weekly run · Nov 3
| Metric | LangGraph | Pydantic AI |
|---|---|---|
| Visibility score | 24.4% | 1.2% |
| Change vs last week | New | New |
| Rank in AI Agents | #4 | #54 |
| Share of voice | 5.3% | 0.4% |
| Mentions this run | 33 | 2 |
| Positive in AI answers | 44% | 100% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
LangGraph 0pp · Pydantic AI 0pp over 0 weekly runs.
Engine by engine
LangGraph leads on 3 of 3 engines
Head to head in AI answers
2 engine answers name both brands
| Prompt | Engine | LangGraph | Pydantic AI |
|---|---|---|---|
| Best AI agent platform for startups | AI Mode | #1 | #5 |
| Alternatives to the most popular AI agent platform | AI Mode | #1 | #4 |
Features, pricing & fit
| Dimension | LangGraph | Pydantic AI |
|---|---|---|
| Pricing model | — | Usage-based |
| Entry price | — | Free; paid from $49 / mo |
| Free plan | — | Yes |
| Deployment | SaaS in US and EU regions, plus self-hosted and hybrid options available on Enterprise only. | — |
| Compliance | SOC 2 Type II, ISO 27001:2022, GDPR, HIPAA | — |
| Support | — | Enterprise tier includes 24/7 priority access to engineers and custom SLAs |
| Headquarters | San Francisco | California, United States |
| Employees | — | 11–50 |
| Funding | Series B | Series A · $17M raised |
| Best for | Teams building long-running, stateful AI agents. | Teams building type-safe AI agents that they intend to ship to production |
Plans side by side
LangGraph
Pricing not available.
Pros and cons
Themes from the AI answers that mention each brand
LangGraph
- Production standard for stateful, multi-agent workflows
- Strong engineering control for complex, cyclical agent logic
- Widely adopted open-source developer framework
- Best choice for autonomous AI agents
- Heavy developer framework that requires coding effort
Pydantic AI
- Type-safe, production-grade application code
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “LangGraph vs Pydantic AI”, https://slateindex.ai/compare/langgraph-vs-pydantic-ai, data of Nov 3, 2026. Licence: CC BY 4.0.