Comet ML
MLOps & Training · Free + paid
ML experiment management platform
At a glance
- Made by
- Comet
- Korean
- None (English and a few others only)
- API
- Yes
- Available on
- Web, API
- Open source
- Open source (Opik; the license name is not on the page)
What is Comet ML?
Comet is an end-to-end model evaluation platform focused on shipping AI features. With the open-source Opik, it records every step of an agent as a trace, automatically groups recurring errors to suggest causes and fixes, and verifies the fixes with test suites and LLM-judge metrics. It also tracks the cost of Claude Code and Codex usage by engineering teams. On the ML side, it provides experiment tracking, model versioning, dataset management, and production monitoring.
- Step-by-step tracing of agents and LLM calls (60+ integrations, MCP server)
- Diagnostics: automatic detection of recurring errors, root-cause analysis, and fix suggestions
- Fix suggestions from the Ollie agent
- Evaluation with Test Suites and LLM-as-a-judge metrics
- Cost Intelligence: tracking Claude Code and Codex usage costs
- ML experiment tracking, model registry, and production monitoring
- Open-source self-hosting or cloud deployment
Who uses Comet ML and for what
- Engineering teams understand and reduce the cost of coding agents (Claude Code, Codex)
- Developers test, debug, and monitor GenAI apps and agents
- ML teams track and compare model training runs
Pricing
What you get for free — Yes (open-source self-hosting is free; Free Cloud: 10 team members, 25k spans per month, 60-day retention)
| Plan | Price | Main limits |
|---|---|---|
| Open Source | $0/mo | Self-hosted, same code as the hosted version |
| Free Cloud | $0/mo | 10 team members, 25k spans per month, 60-day data retention |
| Pro Cloud | $19/mo | 50 team members, 100k spans per month, 60-day retention, adjustable span limit and retention period |
| Enterprise | Contact sales | Custom pricing, unlimited team members, flexible deployment, SSO, dedicated support |
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying. · Official pricing page
AI tools similar to Comet ML (alternatives)
Comet ML vs. alternatives at a glance
| AI | Pricing | Combos on the map | Connected tools | Free | Cheapest monthly | Korean |
|---|---|---|---|---|---|---|
| Comet ML | Free + paid | 0 | 7 | Yes | $19/mo | No |
| CML | Free + paid | 0 | 7 | — | — | No |
| GitLab CI | Free + paid | 0 | 7 | Yes | — | No |
| MLflow | Free + paid | 0 | 5 | Yes | — | No |
| Weights & Biases | Free + paid | 0 | 5 | Yes | $60/mo | Yes |
4 of these 5 tools have a free plan. Cheapest paid plan: Comet ML ($19/mo).
Combo and connection counts are based on the relationships recorded on AI Galaxy Map (2026-10-26); they are not a quality ranking.
Comet ML on AI Galaxy Map
- One of 45 AI tools in the MLOps & Training field.
- Connected to 7 other tools — #6 in its field.
Frequently asked questions
Can I use Comet ML for free?
Yes (open-source self-hosting is free; Free Cloud: 10 team members, 25k spans per month, 60-day retention). Prices can change, so check the official site before paying.
What AI can I use instead of Comet ML?
Tools that do the same job, such as CML, GitLab CI, MLflow, Weights & Biases, are connected to it on the map.
Can I use Comet ML in Korean?
None (English and a few others only)
Sources (official pages)
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying.