Comet

MLOps

Comet is a machine learning (ML) and artificial intelligence (AI) platform company, known for its open-source LLM evaluation and observability tool, Opik.

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Comet provides an open-source platform for developers to trace, evaluate, and automatically improve the performance of large language models and AI agents in production.

Comet is a machine learning (ML) and artificial intelligence (AI) platform company, known for its open-source LLM evaluation and observability tool, Opik. Founded in 2017 by Gideon Mendels (CEO) and Nimrod Lahav (CTO), the company is headquartered in New York. Comet initially built an MLOps platform for experiment tracking and model production monitoring, used by over 150,000 developers and thousands of teams.

Its customer roster includes Netflix, Uber, Etsy, Autodesk, AssemblyAI, NatWest, Stellantis, Mobileye, and Stability AI. In 2022, the company was on pace to achieve record annual recurring revenue (ARR), adding customers like Shopify, Affirm, and CareRev, and secured SOC 2 Type II certification. Comet's current flagship product, Opik, focuses on LLM observability, tracing, evaluation, and automated code fixes via a built-in coding agent named Ollie.

The company has raised at least $6.8 million in disclosed seed funding (a $2.3 million seed round in 2018 led by Trilogy Equity Partners, and a $4.5 million round in 2020). No later funding rounds have been publicly disclosed. Comet is a private company, distinct from the Swiss semiconductor equipment firm Comet Holding AG, which is publicly traded. As of mid-2026, Comet's strategic focus is on the agentic AI market, positioning Opik as a tool that connects observability directly to code iteration.

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Who buys this

  • Enterprise AI/ML teams at large technology companies
  • Financial services and banking institutions deploying LLMs
  • Automotive and manufacturing firms using computer vision and AI
  • AI-native startups and developer tooling companies
  • Media and entertainment companies with recommendation and content systems

Publicly disclosed clients

  • Netflix
  • Uber
  • Etsy
  • Autodesk
  • AssemblyAI
  • NatWest
  • Stellantis
  • Mobileye
  • Stability AI
  • Shopify
  • Affirm
  • CareRev

Strengths and what to watch

Strengths

  • Open-source adoption: Opik has gained significant traction with over 150,000 users and strong GitHub community engagement, lowering the barrier to entry for LLM observability.
  • Named enterprise logos: Comet's client list includes major tech, finance, and automotive brands, indicating trust and production-grade reliability.
  • Automated iteration loop: The integration of Ollie, a coding agent that writes fixes directly from trace data, differentiates Comet from passive observability tools.

Watch for

  • Funding opacity: Comet has not disclosed a funding round since 2020, raising questions about its financial runway and ability to compete with well-capitalized rivals like Weights & Biases and LangChain.
  • Market confusion with Comet Holding AG: The Swiss semiconductor firm Comet Holding AG (ticker: COTN) is a publicly traded company with hundreds of millions in revenue. This name collision creates persistent brand and search confusion.
  • Dependence on open-source monetization: While Opik drives adoption, converting free users to paid enterprise contracts is a challenge common to open-source ML tools, and Comet's conversion metrics are not publicly disclosed.

Key Information

Industry
MLOps
Founded
2017
Employees
99
Headquarters
New York
Country
United States

Frequently Asked Questions

What is Comet and what does it do?

Comet is an open-source platform that helps developers trace, evaluate, and automatically improve large language models and AI agents in production. Its flagship product, Opik, focuses on LLM observability, tracing, and evaluation.

What is Opik in Comet?

Opik is Comet's open-source tool for LLM observability and evaluation. It provides tracing and monitoring capabilities for large language models and AI agents, helping developers identify and fix performance issues directly from production data.

Who uses Comet?

Comet is used by over 150,000 developers and thousands of teams, including major companies like Netflix, Uber, Etsy, Autodesk, and Stability AI. Its customers span tech, finance, automotive, and media sectors.

How does Comet's Ollie coding agent work?

Ollie is a built-in coding agent in Comet's Opik platform that automatically writes code fixes based on trace data from LLM evaluations. This creates an automated iteration loop, connecting observability directly to code improvement.

Has Comet raised funding recently?

Comet has not disclosed a funding round since 2020, when it raised $4.5 million. Its earlier seed round was $2.3 million in 2018. This lack of recent funding raises questions about its financial runway compared to competitors.

Is Comet the same as Comet Holding AG?

No. Comet is a private AI platform company based in New York, distinct from Comet Holding AG, a Swiss publicly traded semiconductor firm. This name collision causes persistent brand and search confusion.

Sources

  1. www.comet.com — Product description (Opik, Ollie), customer logos (Netflix, Uber, Etsy, etc.), and user count (150,000+ developers).
  2. www.comet.com — 2022 ARR growth, new customers (Shopify, Affirm, CareRev), SOC 2 Type II certification, and partnerships with Metaflow, YOLOv5, and Anomalib.
  3. techcrunch.com — Founding year (2017), $2.3 million seed round led by Trilogy Equity Partners, and initial product positioning.
  4. techcrunch.com — $4.5 million funding round in 2020, and the company's focus on ML model management efficiency.