LangSmith Pricing (2026)

Does LangSmith have a free plan?

Yes: the Developer plan is free forever, not a time-limited trial. When you outgrow it, paid plans start at $39/mo.

What the free plan includes

• Up to 5k base traces / mo, then pay-as-you-go
• Community support
• 1 seat

How much does LangSmith cost?

Paid plans start at $39/mo. There's also an Enterprise tier with custom pricing. You can get started on the free plan before committing.

Is there a free plan?

Yes. The "Developer" plan is free forever, not just a trial. You get up to 5k base traces / mo, then pay-as-you-go, community support, 1 seat. It's enough to evaluate the product before upgrading.

Can I try it before paying?

There's no trial per se, but the free plan lets you use the product indefinitely with some limits.

How does the pricing work?

It's a hybrid model split across 3 tiers. The more you need, the more you pay — pretty standard for this category.

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