The short answer
A charge from LANGSMITH* OBSERVABILITY corresponds to LLM application tracing, prompt engineering evaluation, or agent debugging from LangChain Inc.
Why it shows up like this
When you notice an entry labeled as LANGSMITH* OBSERVABILITY on your credit card or bank statement, it represents a payment made to LangChain Inc. for LangSmith. This platform serves software engineers and artificial intelligence developers by providing comprehensive tools for tracing, evaluating, debugging, and testing large language model applications.
This charge typically appears because you or a member of your development team registered for a paid subscription tier, such as the Developer plan, or incurred usage overages beyond the free monthly trace limit. Because AI applications log thousands of execution runs, prompt inputs, and token latencies, automated billing cycles frequently renew monthly on saved payment credentials.
To verify or manage this subscription, log into your account dashboard at smith.langchain.com to inspect organization settings, active seat counts, and monthly Stripe invoices. If you no longer need the service, you can downgrade your workspace to the free tier or cancel team seats to prevent future billing. In cases of unrecognized transactions, contact your financial institution to investigate potential card misuse. Keeping close track of your monthly statements ensures complete financial security and prevents unexpected surprises from recurring charges.
Don’t recognize it? Common scenarios
Review common reasons why unexpected AI observability charges might appear on your bank statements, ranging from automated developer tier renewals to production trace overages.
- A production AI agent or chatbot logged thousands of LLM execution traces to LangSmith.
- An ongoing monthly Developer plan subscription renewed on the credit card.
- Additional team members were invited to collaborate on prompt evaluations and dataset benchmarks.
How to locate the invoice and cancel
Follow these step-by-step instructions to access your organization dashboard, review billing history, and modify subscription plans.
- Log in to LangSmith Open smith.langchain.com and sign in with your GitHub or Google account.
- Open Organization Settings review to Settings > Plans & Billing to view trace counts and download Stripe receipts.
- Downgrade to Free Tier Select Change Plan and switch to the Free Personal tier to stop recurring monthly seat charges.
Frequently Asked Questions
Explore answers regarding tier limits, data retention policies, and subscription refunds below.
What is included in the LangSmith Free tier?
The Personal Free tier includes up to 5,000 captured traces per month, prompt playground access, and 14 days of data retention.
Can I receive a refund from LangSmith?
LangSmith subscriptions are non-refundable. Downgrading takes effect at the conclusion of the active billing period.
Dispute Rights & Fraud Prevention
Understand your consumer rights when evaluating software charges and handling potential billing discrepancies with your card issuer.
Independent reference — not affiliated with LangChain Inc.. Billing names and policies change; verify with the merchant or your bank before acting.
Verified sources
Every claim on this page is checked against official sources — open them to confirm before you call your bank.
- LangSmith Pricing & Tracing Plans https://www.langchain.com
- CFPB: Disputing Unrecognized Charges https://www.consumerfinance.gov
Reviewed Aug 15, 2026 · high · About UnknownCharges