Categories / Opik (Comet)
Opik (Comet)
Visit Website ↗Open-source LLM and agent evaluation and observability platform from Comet, with free self-hosting under Apache 2.0 and a hosted cloud.
Prices may change. These are correct as of 10 Nov 2026. Please confirm on the vendor's own page before you pay.
Unverified: Sources disagree. Comet pages disagree on Pro: most show $19 a month for 100,000 spans and up to 50 members, while one blog shows $39 a month and unlimited free-tier members. The $19 figure is used here.
Free plan
Free plan: 25,000 spans per month. Free cloud tier includes 25,000 spans a month; self-hosting is free.
Plans and prices (USD)
Swipe the table sideways to see what each plan includes.
| Plan | Billed monthly | Yearly, per month | What it includes |
|---|---|---|---|
| Open source (self-host) | $0 | not recorded |
|
| Free cloud | $0 | not recorded |
|
| Pro cloud per per month |
$19 | not recorded |
|
| Enterprise per custom quote |
not recorded | not recorded |
|
"Not recorded" means we did not find that price, not that it is free. Prices exclude tax and can differ by country.
Where it may fit
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Taken from what the vendor says the tool does. We have not tested it.
What to watch
- Comet pages show $19 and $39 for Pro
- Free-tier team limit differs by page
Sources
- Opik vs Arize Phoenix (checked 10 Nov 2026)
- AI observability tools (checked 10 Nov 2026)
- LLM observability tools (checked 10 Nov 2026)
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