Velvet
AI evaluation and observability platform for AI applications.
About Velvet
Velvet is an AI platform focused on evaluating, monitoring, and optimizing AI-powered features. Acquired by Arize in 2025, it provides tools for real-time evaluation, experimentation, and optimization of AI models. The platform includes open-source tools like Phoenix for large language model tracing and evaluation, and LiteLLM for model access, fallbacks, and spend tracking across over 100 LLMs, all compatible with the OpenAI format. Velvet aims to accelerate AI development and deployment through comprehensive observability and evaluation capabilities.
Who It's For
- •AI developers
- •ML engineers
- •AI operations teams (MLOps)
- •Organizations deploying AI models at scale
How It Works
- 1Velvet provides real-time evaluation and monitoring of AI features.
- 2Utilizes open-source tools like Phoenix for model tracing and evaluation.
- 3Offers a gateway called LiteLLM for managing multiple LLMs, fallback options, and cost tracking.
- 4Integrates with the Arize platform for unified AI observability.
How to Use Velvet
- 1Integrate Velvet's tools into your AI development and deployment pipeline.
- 2Use Phoenix for tracing and evaluating large language models.
- 3Use LiteLLM to access models, set fallbacks, and track usage costs across various models.
- 4Leverage the Arize platform for comprehensive AI observability and evaluation.
Key Features
- •Real-time AI evaluation and observability
- •Open-source LLM tracing and evaluation (Phoenix)
- •Model access, fallback, and spend tracking (LiteLLM)
- •Integration with Arize enterprise platform
Use Cases
- •Monitoring and evaluating AI model performance in production.
- •Tracing large language model interactions for debugging and optimization.
- •Managing multiple AI models with fallback options and cost tracking.
- •Accelerating AI development through evaluation tools.
Pros & Cons
Advantages
- •Integrated platform with evaluation, observability, and model management
- •Open-source tools available for flexibility
- •Supports a wide range of models including over 100 LLMs
- •Backed by Arize for enterprise solutions
Disadvantages
- •Requires integration effort for existing workflows
- •Limited direct end-user features, mainly for developers and engineers
- •Some features may be complex for beginners
Alternatives
- Weights & Biases
- Neptune.ai
- MLflow
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Frequently Asked Questions
What is Velvet?
Velvet is an AI platform focused on evaluating, monitoring, and optimizing AI-powered features. Acquired by Arize in 2025, it provides tools for real-time evaluation, experimentation, and optimization of AI models.
How much does Velvet cost?
Velvet uses custom pricing — contact the vendor for a quote.
Is Velvet free?
Velvet is a paid tool and does not offer a free plan.
What are the best Velvet alternatives?
Popular Velvet alternatives include Weights & Biases, Neptune.ai, MLflow.
What is Velvet used for?
Velvet is commonly used for Monitoring and evaluating AI model performance in production., Tracing large language model interactions for debugging and optimization., Managing multiple AI models with fallback options and cost tracking..
Information Accuracy
Please note: While we regularly update all tool information including descriptions, features, pricing, and other details, this information may change over time as tools evolve and update their offerings. For the most current and accurate information, we recommend visiting the official website directly. Our goal is to provide you with comprehensive and up-to-date information to help you make informed decisions.