The short answer
The registry records Chroma Hosted Vector Database & Retrieval Engine as a possible interpretation of CHROMA* VECTOR HOST. This descriptor-to-company association has not passed claim-level evidence review. Compare the exact line, amount and posted status with your own receipt or account activity; the name alone cannot confirm the merchant or whether you authorized the payment.
What do the parts of CHROMA* VECTOR HOST mean?
- CHROMA * VECTOR HOST
- Before the asterisk, "CHROMA" usually names the platform or parent company. After it, "VECTOR HOST" usually names the product, store or order. How descriptors work →
The notes below are unreviewed registry explanations, not confirmation of merchant identity, authorization or current policy. Claim-level source review is pending for this entry.
Why it shows up like this
Unreviewed registry note: 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.
Unreviewed registry note: 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.
Don’t recognize it? Common scenarios
- Unreviewed registry note: An AI developer connected an LLM agent or LangChain application to Chroma's hosted vector database cloud.
- Unreviewed registry note: An ongoing hosted collection subscription renewed on the credit card.
- Unreviewed registry note: Vector collections were populated with large PDF or document datasets for RAG workflows.
Frequently Asked Questions
How does Chroma Cloud bill for data storage?
Unreviewed registry note: Chroma Cloud bills based on the volume of stored vectors and documents alongside search query operations.
Dispute Rights & Fraud Prevention
Unreviewed registry note: 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.
Sources and evidence
Sources may support different parts of this page. A company homepage does not establish a statement descriptor, refund policy or contact detail. Check the claim notes and your own receipt before acting.
- Chroma Vector Database Documentation & Pricing https://trychroma.com
- CFPB: Disputing Unrecognized Charges https://www.consumerfinance.gov
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