Comet
AI observability with Ollie agent that auto-codes fixes into your repo
What is Comet?
Comet is an end-to-end AI developer platform combining LLM tracing, evaluation, and production monitoring (Opik) with classical MLOps experiment tracking, model registry, and dataset management. Its built-in Ollie coding agent reads traces and test results and writes code fixes directly into your agent's repository, closing the loop from observation to remediation. The platform claims 150,000+ developers across 10,000+ teams, including Uber, Netflix, and Autodesk, signaling enterprise traction.
Knowledge bases, internal search, operations, data, finance, HR, and back-office tools with AI workflows.
See the full Knowledge & Ops guide to compare more tools, buyer criteria, and related workflows.
Use cases to evaluate
Trace agent runs, score them with 30+ LLM-as-judge metrics, and gate deploys on test suites
Let Ollie analyze failed traces and open a PR with prompt or code fixes
Track classical ML experiments and register the winning model for downstream use
Monitor production agent cost and governance from the same UI as development
Fit to evaluate
Hybrid teams running both classical ML training and LLM agent products
AI engineering teams that want auto-remediation, not just dashboards
Enterprises consolidating MLOps and LLMOps spend under one vendor
Cost-sensitive startups attracted to the $19/month Opik Pro tier
Business fit
Right for you if you want one vendor for both LLM agent observability and classical ML experiment tracking, especially if Ollie's auto-fix workflow appeals as more than a logging tool. Skip if you only need lightweight LLM tracing without the broader MLOps surface, or if you don't want an AI agent committing code to your repo. Opik Pro at $19/month is unusually low-priced for this category, making it easy to pilot. Enterprise unlocks SSO, HIPAA, and flexible deployment for regulated buyers.
How to evaluate Comet
Use this category when operational data, policies, tasks, or internal requests are spread across disconnected systems.
Confirm the exact workflow
Map Comet to one concrete workflow first, such as trace agent runs, score them with 30+ llm-as-judge metrics, and gate deploys on test suites. Avoid buying before the owner, trigger, output, and success metric are clear.
Check category fit
Compare internal search, permissions, workflow support, and reporting.
Compare practical alternatives
Shortlist Comet against Glean, Guru, Slite so the decision is based on fit, effort, and workflow ownership rather than brand recognition alone.
Validate cost and rollout effort
Opik open source self-hosted free; Opik Free Cloud $0/month with 10 members, 25K spans, 60-day retention; Opik Pro $19/month with 50 members, 100K spans; MLOps Free with 1 user, 100GB; MLOps Pro $19/user/month with 10 users, 1.5K training hours ($1/extra hour), 500GB; Enterprise custom with SSO and HIPAA. Also confirm implementation time, support needs, and whether the medium setup matches your team.
Compare Comet with alternatives
Use this quick comparison before booking demos or moving data into a new system.
| Primary workflow | Trace agent runs, score them with 30+ LLM-as-judge metrics, and gate deploys on test suites, Let Ollie analyze failed traces and open a PR with prompt or code fixes |
|---|---|
| Best-fit team | Hybrid teams running both classical ML training and LLM agent products, AI engineering teams that want auto-remediation, not just dashboards |
| Implementation effort | Medium setup and maintenance profile |
| Pricing check | Free plan + paid plans |
| Closest alternatives | GleanGuruSliteSlab |
Comet pricing
| Model | Free plan + paid plans |
|---|---|
| Snapshot | Opik open source self-hosted free; Opik Free Cloud $0/month with 10 members, 25K spans, 60-day retention; Opik Pro $19/month with 50 members, 100K spans; MLOps Free with 1 user, 100GB; MLOps Pro $19/user/month with 10 users, 1.5K training hours ($1/extra hour), 500GB; Enterprise custom with SSO and HIPAA. |
| Checked |
Common questions about Comet
What is Comet?
Comet is an end-to-end AI developer platform combining LLM tracing, evaluation, and production monitoring (Opik) with classical MLOps experiment tracking, model registry, and dataset management. Its built-in Ollie coding agent reads traces and test results and writes code fixes directly into your agent's repository, closing the loop from observation to remediation. The platform claims 150,000+ developers across 10,000+ teams, including Uber, Netflix, and Autodesk, signaling enterprise traction.
What is Comet used for?
Common use cases: Trace agent runs, score them with 30+ LLM-as-judge metrics, and gate deploys on test suites; Let Ollie analyze failed traces and open a PR with prompt or code fixes; Track classical ML experiments and register the winning model for downstream use; Monitor production agent cost and governance from the same UI as development.
How much does Comet cost?
Opik open source self-hosted free; Opik Free Cloud $0/month with 10 members, 25K spans, 60-day retention; Opik Pro $19/month with 50 members, 100K spans; MLOps Free with 1 user, 100GB; MLOps Pro $19/user/month with 10 users, 1.5K training hours ($1/extra hour), 500GB; Enterprise custom with SSO and HIPAA.
Who is Comet best for?
Comet fits Hybrid teams running both classical ML training and LLM agent products, AI engineering teams that want auto-remediation, not just dashboards, Enterprises consolidating MLOps and LLMOps spend under one vendor, Cost-sensitive startups attracted to the $19/month Opik Pro tier. Right for you if you want one vendor for both LLM agent observability and classical ML experiment tracking, especially if Ollie's auto-fix workflow appeals as more than a logging tool. Skip if you only need lightweight LLM tracing without the broader MLOps surface, or if you don't want an AI agent committing code to your repo. Opik Pro at $19/month is unusually low-priced for this category, making it easy to pilot. Enterprise unlocks SSO, HIPAA, and flexible deployment for regulated buyers.
What are alternatives to Comet?
Common alternatives to Comet include Glean, Guru, Slite, Slab, Tettra, Sana.