Comet Opik: pricing and features
by Comet
Prices and features checked 2026-10-17 on the vendor's own pages. Anything we could not confirm says “not verified”.
What is Comet Opik? Open-source platform for tracing, test suites, LLM-as-judge metrics, annotation queues, prompt versioning and agent optimisation. The open-source build is the same codebase as Opik Cloud.
Best for: Teams that want a fully open-source tracing and evaluation platform with a low-cost cloud option.
Pricing
- Free tier
- Free Cloud: 25k spans/month, up to 10 team members, 60-day retention; open source self-hosted is free [source, checked 2026-10-17]
- Entry paid price
- Pro Cloud $19/month: 100k spans, up to 50 members, then $5 per 100k spans [source, checked 2026-10-17]
- What you pay for (meter)
- Spans per month [source]
- Licence
- Apache-2.0 [source]
- Self-hosting
- Open-source version self-hosts with unlimited spans [source]
- Data retention
- 60 days on Free and Pro Cloud; unlimited when self-hosted; extension to 400 days at $29 per 100k spans [source]
Features
| OpenTelemetry | Native OpenTelemetry support [source] |
|---|---|
| CI gating | PyTest integration for CI/CD [source] |
| LLM-as-judge | LLM-as-judge and heuristic metrics [source] |
| Human annotation | Annotation queues [source] |
| Prompt management | Prompt library and versioning [source] |
| Dataset versioning | Dataset versioning [source] |
| SOC 2 / HIPAA | SOC 2, ISO 27001, HIPAA and GDPR on Enterprise [source] |
Compare
- All 12 LLM evaluation platforms compared
- Comet Opik vs Langfuse
- Langfuse alternatives
- LangSmith alternatives
- Braintrust alternatives
- Arize AX and Phoenix alternatives
- Pricing calculator · LLM observability tools
Other tools: Langfuse · Braintrust · LangSmith · Arize AX and Phoenix · Promptfoo · DeepEval and Confident AI · Galileo (Splunk Agent Observability) · Maxim AI · Helicone · W&B Weave · Ragas
Vendors: want a labelled featured slot on tool pages like this one? Sponsorships are always marked “Sponsored” and never change table order, verdicts or facts. See placements and how to book.