Opik
Free Cloud plan for LLM and agent tracing and evaluation.
Dev Tools
What you get
Comet's hosted Opik for AI observability: agent tracing and analysis, test suites and assertions and the Agent Playground, with 25,000 spans a month for up to 10 team members.
How to get it
Click "Get Started" under Free Cloud on comet.com/site/pricing.
What it requires
A Comet account.
The catch
25,000 spans a month and 60-day retention; Pro Cloud is $19 a month for 100,000 spans. The open-source version can be self-hosted for free.
From the official page · checked Oct 27, 2026