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15 pages · updated October 27, 2026

Synthetic research platforms, compared.

How Planetarium compares with the other 8. Planetarium and Minds show a price and let you start yourself. Every page cites its sources and says when another platform is the better choice. We make Planetarium, so we say so.

Head to head · 8

Alternatives · 7

Questions

What buyers ask next.

Why not just ask a general AI model?

In our October 2026 test on 421 YouTube videos, Planetarium's error on the mix of comments was 15 to 27% lower than each of 6 leading models asked directly. Planetarium answers as 19,032 ready-made audiences built from people observed online, and says "too close" when it cannot tell.

How can Planetarium show a price from $99 when most here do not?

The audiences are built before you arrive, so there is no project to scope and no audience to build for you. You run the test yourself; half of studies come back in about 34 seconds. Plans start at $99 a month, first test free. Most of the others scope and price each engagement after a demo.

Can these accuracy figures be compared with each other?

Not as one ranking. Each company tests itself its own way, on its own questions, with its own measure, so a higher number on one site is not a better result than a lower one on another. Read what each figure measures, then ask each supplier to run your own past study.

Should synthetic research replace real people?

No. Use it to test many versions fast and cheaply, then take the best to real people when the decision is large. Where a decision needs real people's own words, a platform such as Remesh is the better choice.

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