AI Data
Comet vs ThoughtSpot
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

ThoughtSpot
From $25/mo
Agentic analytics platform for searching and querying company data
Pros
- ✓ Free trial is offered, and the Developer plan is listed as free for 1 year.
- ✓ Essentials starts as low as $25 per user per month billed annually, with a 5 to 50 user range and up to 25M rows of data.
- ✓ ThoughtSpot states it does not meter or charge for LLM tokens on its plans.
Cons
- ✗ Enterprise and Developer plans have no listed price and require contacting sales.
- ✗ Pro plan Spotter AI Agents are limited to 25 queries per month per user.
| Comet | ThoughtSpot | |
|---|---|---|
| From | $19/mo | $25/mo |
| Free Tier | Yes ✓ | Yes ✓ |
| Our Rating | Not rated | Not rated |
| Pricing | freemium | freemium |
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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.