LLM request gateway
Historically proxied model traffic so teams could capture requests, responses, latency, cost, and related metadata.
Historical tool archive
Velvet: historical overview
Velvet was an AI developer gateway for logging, querying, evaluating, and monitoring LLM applications; Arize acquired the company in March 2025.
No longer active
Archive
What Velvet was
Velvet is no longer offered as an independent product. Its official site says Arize acquired the company in 2025, and Velvet's acquisition announcement directs future users to Arize, the open-source Phoenix project, and LiteLLM.
Before the acquisition, Velvet evolved from an AI-assisted data-query product into an LLM gateway and observability layer. It could proxy model requests, warehouse logs in a hosted or connected database, query them with text-to-SQL, cache responses, compare models and prompts, run evaluations, and monitor production AI features.
Past capabilities
What Velvet offered
Log warehousing
Stored LLM activity in a hosted database or a customer-connected data environment.
Text-to-SQL analysis
Let teams generate queries over logged model and product data using natural-language prompts.
Experiments and evaluations
Compared prompts, models, settings, and evaluation metrics in point-in-time or continuous workflows.
Availability
Why this listing is historical
Velvet has no current standalone pricing. Archived 2024 updates advertised free usage allowances that changed over time, so they should not be used for purchasing or budgeting. Review current Arize, Phoenix hosting, LiteLLM, or alternative-provider pricing instead.
- Velvet is no longer an independently active product and should not be selected for a new deployment.
- Archived documentation, SDK behavior, endpoints, availability, and pricing may no longer apply.
- The product changed focus over its short life, so older descriptions of general product-data querying may not match its later LLM gateway.
Status checked . Review the historical source ↗
Current options
Active Velvet alternatives
Data Analysis
Databricks Mosaic AI
Databricks Mosaic AI provides a broader governed platform for building, evaluating, serving, and monitoring AI systems alongside enterprise data.
Explore Databricks Mosaic AI →Data Analysis
DataLab
DataLab is a current conversational data-analysis workspace for generating and reviewing analysis across connected data.
Explore DataLab →Coding
AI2SQL
AI2SQL focuses more narrowly on translating natural-language questions into SQL for supported databases.
Explore AI2SQL →Questions
Velvet FAQs
Is Velvet still active?
Not as an independent product. Velvet announced on March 13, 2025 that it had been acquired by Arize.
What happened to Velvet?
Its founders joined Arize, and the official site now directs developers to Arize, Phoenix, and LiteLLM for future AI infrastructure needs.
What did Velvet do?
Its later product proxied LLM requests, stored and queried logs, supported caching, ran model and prompt evaluations, and monitored production AI features.
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