Developer
Free
Free tier with 5,000 traces/mo
- Traces
- 5,000 traces included per month
- Seats
- 1 seat
- Prompt playground
- Included
Finding the possibilities
LangSmith pricing
● Identity checkedCode · Vendor site 2026-10-04
LangSmith is an enterprise LLM observability, evaluation, and monitoring platform built by LangChain.
- Category
- Code
- Free access
- Developer plan includes 5,000 free trace events per month with 1 user seat and full tracing access.
- API access
- Native Python and TypeScript SDKs, REST APIs, and seamless zero-configuration integration with LangChain and LlamaIndex via environment variables.
Understand the total cost
LangSmith pricing & plans
Plus
$39.00 /mo
$39 per user / month plus trace usage
- Collaboration
- Team workspaces and role permissions
- Data retention
- Extended retention up to 400 days
- Included traces
- Usage-based billing beyond included allocation
Enterprise
Not listed
Custom contract with volume discounts
- Deployment
- Self-hosted / hybrid VPC deployment
- Security
- SSO, RBAC, and SOC 2 Type II compliance
Price history
No retained pricing changes yet. A current price alone does not establish a historical trend.
How this profile is supported
Identity and profile
Reviewed vendor source
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LangSmith pricing questions
Is LangSmith free?
Yes. LangSmith has an ongoing free plan. Developer plan includes 5,000 free trace events per month with 1 user seat and full tracing access.
How much does LangSmith cost?
LangSmith paid plans start at $39 per month (Plus $39/mo). Prices are in USD and last checked Oct 4, 2026.
Does LangSmith have an API?
API or developer access is mentioned. Native Python and TypeScript SDKs, REST APIs, and seamless zero-configuration integration with LangChain and LlamaIndex via environment variables.