AI Data
Comet vs Holistics
Two ai data tools, what each is better at, what each costs, and the one we would pick.
We rate it higher
Comet
From $19/mo
LLM observability, evaluation and ML experiment tracking
Pros
- ✓ A free tier exists for both Opik Cloud and MLOps, and the page says no credit card is required.
- ✓ Opik has a self-hostable open-source version using the same codebase as the hosted product.
- ✓ Opik Free Cloud includes up to 10 team members and 25k spans per month with 60-day retention.
Cons
- ✗ Opik Free and Pro Cloud both cap span data retention at 60 days; longer retention costs $29 per 100k spans.
- ✗ Opik Pro Cloud is limited to 50 team members and 100k spans per month.
We rate it higher
Holistics
From $800/mo
Self-service BI and AI analytics on a code-defined semantic layer
Pros
- ✓ Metrics, models and dashboards are defined as code in AML with Git version control and pull-request review.
- ✓ The same semantic layer feeds dashboards, AI answers and embedded analytics, so numbers stay consistent across surfaces.
- ✓ The semantic layer can be queried from external tools such as Claude, ChatGPT and Cursor over MCP and APIs.
Cons
- ✗ No free plan is listed; the cheapest paid plan is $800/month on yearly billing.
- ✗ Every plan includes only the first 10 users, and additional users are charged as add-ons.
| Comet | Holistics | |
|---|---|---|
| From | $19/mo | $800/mo |
| Free Tier | Yes ✓ | No |
| Our Rating | Not rated | Not rated |
| Pricing | freemium | paid |
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Summary
We have not used both of these yet, so there is no score to pick a winner with. What they cost, who they suit and what each one does is in the table above.
Some links here earn us a commission. We earn it whether we praised the tool or not, which is why the verdict does not move for it.