Braintrust vs LangSmith Pricing (2026)
How do these two stack up on price? Here's what each one costs, what you get, and where the value sits.
| Braintrust pricing | LangSmith pricing | |
|---|---|---|
| Starts at | $249/mo | $39/mo |
| Number of plans | 3 | 3 |
| Free plan | ||
| Free trial | — | — |
| Pricing model | hybrid | hybrid |
Price is one row. To weigh the features too, use our feature comparison template →
Starter
- $10 credits
- 1 GB processed data
- 10k scores
- 14-day retention
- Unlimited users, projects, datasets, playgrounds, and experiments
Pro
Popular- $100 credits
- 5 GB processed data
- 50k scores
- 30-day retention
- Custom charts, environments, priority support, RBAC, and more
Enterprise
- Custom data retention and export, RBAC, and premium support with on-prem or hosted deployment for high volume or privacy-sensitive data.
Developer
- Up to 5k base traces / mo, then pay-as-you-go
- Community support
- 1 seat
Plus
Popular- Up to 10k base traces / mo, then pay-as-you-go
- Access to Deployment, Engine, and more
- Add unlimited seats
Enterprise
- Self-hosted and hybrid deployment options
- Custom SSO, ABAC, and RBAC
- Support SLA
- Custom seats and workspaces
Braintrust vs LangSmith FAQ
- Which one is cheaper?
- LangSmith is the cheaper option, starting at $39/mo vs $249/mo for Braintrust.
- Can I use either one for free?
- Both offer free plans, so you can try each without paying. Start with whichever fits your workflow better and upgrade when you hit the limits.
- How do they charge?
- Both use a hybrid model, so the comparison is straightforward — it comes down to features and limits at each price point.
- Which one is a better deal?
- Depends on what you need. Braintrust: At $249/mo for Pro, Braintrust sits mid-to-premium in the LLM observability/eval space — not a rock-bottom self-serve tool, but not locked behind a full sales-only paywall either. They're clearly courting funded startups (hence the free-months discount) who need serious eval infrastructure but aren't ready for enterprise contracts yet.
Still deciding? See the best Braintrust alternatives or the best LangSmith alternatives, ranked with verified pricing.
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