
Comet is an end-to-end model evaluation platform designed for AI developers to achieve consistency and predictability in AI applications and agentic systems at scale. It offers a comprehensive suite of tools for managing the entire ML or LLM lifecycle, from training through production. Key products include Opik for LLM evaluation and prompt engineering, Experiment Management for tracking and visualizing model training runs, Model Production Monitoring for detecting data drift and performance degradation, Model Registry for versioning and managing models, and Artifacts for versioning datasets. Comet integrates seamlessly with various frameworks and libraries, making it easy to log traces, code, hyperparameters, and metrics with just a few lines of code. The platform is trusted by innovative ML teams and supports open-source LLM evaluations, automated agent optimization, and GenAI guardrails.

Comet is an end-to-end model evaluation platform designed for AI developers to achieve consistency and predictability in AI applications and agentic systems at scale. It offers a comprehensive suite of tools for managing the entire ML or LLM lifecycle, from training through production. Key products include Opik for LLM evaluation and prompt engineering, Experiment Management for tracking and visualizing model training runs, Model Production Monitoring for detecting data drift and performance degradation, Model Registry for versioning and managing models, and Artifacts for versioning datasets. Comet integrates seamlessly with various frameworks and libraries, making it easy to log traces, code, hyperparameters, and metrics with just a few lines of code. The platform is trusted by innovative ML teams and supports open-source LLM evaluations, automated agent optimization, and GenAI guardrails.
What they do: End-to-end model evaluation and MLOps platform (experiment tracking, model registry, artifacts, production monitoring, LLM evaluation/Opik)
Founded / HQ: Founded 2017; headquartered in New York, NY
Founders / leadership: Co-founders Gideon Mendels (CEO) and Nimrod Lahav (CTO)
Employees: ~95
Funding: Raised ~ $69–70M (latest round Nov 18, 2021)
MLOps, model evaluation, model production monitoring, and LLM evaluation
2017
MLOps / AI developer tooling
$4.5M
Follow-on to an earlier $2.3M seed; investors included Trilogy Equity Partners, Two Sigma Ventures, Founder’s Co-op
$13M
Series A with participation from Trilogy Equity Partners and Two Sigma Ventures
$50M
Series B with participation from existing investors including Scale Venture Partners, Trilogy Equity Partners and Two Sigma Ventures
“Scale Venture Partners; OpenView; Trilogy Equity Partners; Two Sigma Ventures; Founder’s Co-op”