How much does Comet cost?
Paid plans start at
$19/mo
- Free plan
- Yes
- Free trial
- Pro plans have a 'Start Free Trial' button; length not stated
- Enterprise
- Contact sales
Read from www.comet.com/site/pricing/ on Oct 29, 2026. Price changed? Tell usSee the line each price came from
In your favor
- Unlimited spans on Opik Open Source. A flat price with no cap on spans.
- Free plan. Opik Free Cloud: 25k spans per month, up to 10 team members, 60-day retention. Opik open source is free to self-host. MLOps Free: 1 user, 100GB, fair usage limits; workspaces not opened in the UI for 90 days are deleted.
Watch out for
- Going over the MLOps Pro allowance costs $1 per training hour. Included: 1500 training hours.
- Their pages disagree: Number of Opik integrations. "60+ integrations" vs "Integrations with 40+ AI Frameworks, Model Providers, & AI Gateways"
- Their pages disagree: Number of evaluation metrics. "40+ LLM-as-a-judge metrics" vs "30+ Built-in Evaluation Metrics"
How you buy and get started
Self-serve + salesButtons on their site: Try Opik Free, Get Demo, Start Free Trial, Contact Us
- Sign up
- Self-serve signup for free and Pro plans "Try Opik Free"
- Setup
- Self-hosted full platform can be deployed locally in a couple of minutes "The Comet platform can be deployed locally in just a couple of minutes, perfect if you want a simple single-user deployment."
- When sales steps in
- Enterprise requires contacting sales "Contact Us"
- Support
- Email support on Pro "Email support"
- Support
- Enterprise response time SLA 2 hours (Opik) "Response Time SLA"
- Support
- Community Slack on Free "Community Slack"
What Comet does
Comet sells two product families on one platform: MLOps (experiment tracking, dataset management, model registry, production monitoring) and Opik (LLM tracing, evaluation, prompt optimization). Both have free tiers, paid cloud plans and enterprise options, and Opik can be self-hosted.
- Good for
- Teams training machine learning models who need experiment tracking and a model registry, and teams building LLM apps or agents who need tracing and evaluation.
- Channels
- Web app, Python SDK, TypeScript SDK, REST API, MCP server, GitHub (open source)
- Main product
- Comet MLOps (Experiment Management) and Opik
- Also includes
- Experiment tracking, Dataset management and versioning, Model Registry, Hyperparameter search, Model production monitoring (Enterprise), LLM tracing and evaluation
- Connects to
- LangChain, LlamaIndex, OpenAI, PyTorch, PyTorch Lightning, Hugging Face, Keras, TensorFlow, Scikit-learn, XGBoost, CrewAI, LangGraph
- Public API
- Yes
- MCP server
- Yes
- Experiment tracking
Systematically record, compare, and analyze your machine learning training runs to accelerate development and
- Model registry and versioning
Model Registry centralizes and organizes machine learning models, enabling versioning, tracking, and seamless
- Pipeline orchestrationNot stated
- Model deployment and servingNot stated
- Drift and performance monitoring
Automatically identify data drift for your Machine Learning models in production, helping maintain model perfo
- Feature storeNot stated
- LLM and GenAI supportNot stated
- Self-hosted or VPC deploymentNot stated
The same 8 checks appear on every tool in MLOps platforms. Each tick quotes the vendor's own site.
Security and your data
| Question | Their answer | Where it says so |
|---|---|---|
| Trains AI on your data? | Not stated | |
| HIPAA (signs a BAA) | available on Enterprise | "SOC 2, ISO 27001, ISO 9001, HIPAA, and GDPR compliance"pricing |
| SOC 2 | Enterprise | "SOC 2, ISO 27001, ISO 9001, HIPAA, and GDPR compliance"pricing |
| GDPR | Enterprise | "SOC 2, ISO 27001, ISO 9001, HIPAA, and GDPR compliance"pricing |
| CCPA | CCPA Privacy Notice published | "CCPA Privacy Notice"pricing |
| PCI | Not stated | |
| ISO 27001 | Enterprise | "SOC 2, ISO 27001, ISO 9001, HIPAA, and GDPR compliance"pricing |
| Single sign-on | Enterprise | "Enterprise SSO (OAuth 2.0, SAML, and LDAP protocols)"pricing |
| Trust center | https://trust.comet.com/ | "Security & Compliance"pricing |
Security answers are the vendor's own claims, quoted. We don't audit them.
Every plan
| Plan | Monthly | Billed yearly | Included | Over the allowance | Where it says so |
|---|---|---|---|---|---|
| MLOps ProPer user/month | $19 | – | 1500 training hoursUp to 10 users; 500GB included, $3/100GB/month extra | $1/training hour | "ge limits, 100gb data storage, and community support. comet mlops pro : perfect for growin" |
| Opik Open Source | – | – | Unlimited | – | "Download, install, & run Opik your way" |
| Opik Free Cloud | – | – | 25000 spansUp to 10 team members; 60-day data retention | – | "25k spans per month" |
| MLOps Free | – | – | –1 platform user; 100GB data usage; 90 days inactivity deleti | – | "1 platform user" |
| Opik Enterprise | Quote | – | Unlimited | – | "Custom" |
| MLOps Enterprise | Quote | – | Unlimited | – | "Unlimited training hours" |
Their pages disagree: Number of Opik integrations"60+ integrations" vs "Integrations with 40+ AI Frameworks, Model Providers, & AI Gateways"
Their pages disagree: Number of evaluation metrics"40+ LLM-as-a-judge metrics" vs "30+ Built-in Evaluation Metrics"
Free plan: Opik Free Cloud: 25k spans per month, up to 10 team members, 60-day retention. Opik open source is free to self-host. MLOps Free: 1 user, 100GB, fair usage limits; workspaces not opened in the UI for 90 days are deleted.
Fine print
- Billing increment
- Not stated
- Billed beyond usage
- Opik Pro: $5/100k extra spans; MLOps Pro: $1 per extra training hour "$5/100k spans"
- Contract
- Not stated
- Refunds
- Platform credits are non-refundable "Comet Platform Credits are non-refundable and non-transferable."
- Auto renew
- Not stated
- Price change notice
- Not stated
"Not stated" means we read their pricing page and terms and they don't say.
About the company
- Legal name
- Comet ML, Inc.
- Address
- Headquartered in New York City, with offices in Tel Aviv
- Online since
- Nov 2, 1994 Domain registration date
- Founder
- Gideon Mendels, CEO and Co-Founder
- Founder
- Nimrod Lahav, CTO and Co-founder
- Funding
- $70M in funding "in funding"
- Customers
- "450 enterprise, startup, and academic teams; 150,000+ users; 10,000+ teams (Opik)" their claim
Comet alternatives
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We link to reviews instead of copying ratings: those sites don't allow reuse, and we don't test products ourselves.
Questions
Is Comet free?
Yes. Opik Free Cloud: 25k spans per month, up to 10 team members, 60-day retention. Opik open source is free to self-host. MLOps Free: 1 user, 100GB, fair usage limits; workspaces not opened in the UI for 90 days are deleted. Paid plans start at $19/month.
How much does Comet cost?
Paid plans start at $19 per month.
Is Comet HIPAA compliant?
Comet says a HIPAA BAA is available on Enterprise.