The short answer
A charge from CHROMA* VECTOR HOST corresponds to managed cloud vector storage, similarity query indexing, or AI document embedding hosting from Chroma Inc.
Why it shows up like this
CHROMA* VECTOR HOST is a billing charge from Chroma Inc., the company behind Chroma, a widely used open-source vector database built for AI applications. Developers use Chroma to store text embeddings — numerical representations of documents, queries, and other content — so that AI systems can retrieve semantically similar information at speed. The hosted cloud version at trychroma.com moves that database off your own server and into Chroma's managed infrastructure, and that's when monthly charges begin.
The descriptor appears on your statement because someone connected a cloud account at trychroma.com to your card. Billing scales based on how many vectors are stored and how many search queries run each month. The descriptor may also read CHROMA INC or TRYCHROMA SAN FRANCISCO depending on how the payment processor formats it. This is very commonly an engineer's side project or a team AI tool billed to a shared company card — check with your development team before assuming fraud.
To trace this charge, sign in to trychroma.com and go to Organization Settings > Billing. There you'll find itemized invoices showing which vector collections are active and your monthly usage. Deleting unused vector collections stops ongoing storage charges immediately. To cancel the subscription entirely, select Cancel Subscription in the billing panel. Usage fees are non-refundable, but stopping the service prevents further billing.
Don’t recognize it? Common scenarios
- An AI developer connected an LLM agent or LangChain application to Chroma's hosted vector database cloud.
- An ongoing hosted collection subscription renewed on the credit card.
- Vector collections were populated with large PDF or document datasets for RAG workflows.
How to locate the invoice and cancel
- Log in to Chroma Cloud Console Open trychroma.com and sign in with your developer account.
- Review Billing & Invoices review to Organization Settings > Billing to view collection metrics and download Stripe receipts.
- Delete Collections or Account Delete unused vector collections or select Cancel Subscription in billing settings.
Frequently Asked Questions
How does Chroma Cloud bill for data storage?
Chroma Cloud bills based on the volume of stored vectors and documents alongside search query operations.
Can I receive a refund from Chroma?
Usage fees are non-refundable. Deleting vector collections terminates future billing immediately.
Dispute Rights & Fraud Prevention
If you don't recognize this charge and have no AI or developer projects tied to Chroma Inc., treat it as potentially unauthorized. Chroma does not cold-charge cards — an account must be explicitly created at trychroma.com with a saved payment method for any billing to occur. If no one on your team claims the account, contact your card issuer to dispute the charge. Under the Fair Credit Billing Act, you have 60 days from the statement date to file a dispute for charges you did not authorize.
If you find an active Chroma account you didn't set up, delete all vector collections immediately to stop ongoing usage charges, then close the account through Organization Settings. Contact Chroma support at docs.trychroma.com to request account termination. If your card number was used without your knowledge, ask your bank to issue a new card number to prevent repeat charges.
Independent reference — not affiliated with Chroma 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.
- Chroma Vector Database Documentation & Pricing https://trychroma.com
- CFPB: Disputing Unrecognized Charges https://www.consumerfinance.gov
Reviewed Aug 15, 2026 · high · About UnknownCharges