LangSmithAI Agents
vs
Pydantic AIBuild agents you'll actually ship to production
Comparison · AI Agents · weekly run Nov 3
LangSmith vs Pydantic AI
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
LangSmith is the stronger AI pick in AI Agents: it has a visibility score of 3 versus 1.2 for Pydantic AI.
Choose LangSmith if…
- You want the brand AI engines rank higher (3 vs 1.2)
- You need SOC 2 Type II or HIPAA or GDPR or ISO 27001 (Engine feature) coverage
- strong production observability
- tracing, debugging and response evaluation
Choose Pydantic AI if…
- AI answers describe it more positively (100% vs 17% positive)
- Type-safe, production-grade application code
AI visibility side by side
Latest weekly run · Nov 3
| Metric | LangSmith | Pydantic AI |
|---|---|---|
| Visibility score | 3% | 1.2% |
| Change vs last week | New | New |
| Rank in AI Agents | #31 | #54 |
| Share of voice | 0.9% | 0.4% |
| Mentions this run | 6 | 2 |
| Positive in AI answers | 17% | 100% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
LangSmith 0pp · Pydantic AI 0pp over 0 weekly runs.
Engine by engine
LangSmith leads on 2 of 3 engines
ChatGPT
AI Mode
Perplexity
LangSmithPydantic AI
Head to head in AI answers
0 engine answers name both brands
0LangSmith ranked higher
0Pydantic AI ranked higher
Features, pricing & fit
| Dimension | LangSmith | Pydantic AI |
|---|---|---|
| Pricing model | — | Usage-based |
| Entry price | — | Free; paid from $49 / mo |
| Free plan | — | Yes |
| Deployment | Cloud, Bring Your Own Cloud, and Self-hosted | — |
| Compliance | SOC 2 Type II, HIPAA, GDPR, ISO 27001 (Engine feature) | — |
| Support | — | Enterprise tier includes 24/7 priority access to engineers and custom SLAs |
| Headquarters | San Francisco, California | California, United States |
| Employees | — | 11–50 |
| Funding | Series B | Series A · $17M raised |
| Best for | — | Teams building type-safe AI agents that they intend to ship to production |
Plans side by side
LangSmith
Pricing not available.
Pros and cons
Themes from the AI answers that mention each brand
LangSmith
- strong production observability
- tracing, debugging and response evaluation
Pydantic AI
- Type-safe, production-grade application code
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “LangSmith vs Pydantic AI”, https://slateindex.ai/compare/langsmith-vs-pydantic-ai, data of Nov 3, 2026. Licence: CC BY 4.0.