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Compare/October 27, 2026

Planetarium vs Evidenza

Choose Planetarium to test consumer ads, messages and websites yourself, today. Choose Evidenza for done-for-you B2B buyer research and a go-to-market plan.

By the Planetarium team · We publish this page and sell in this category

Key takeaways

  • Planetarium: half of studies in about 34 seconds. Evidenza: results in 72 hours (full service).
  • Planetarium starts at $99 a month, first test free. Evidenza publishes no price.
  • Evidenza reports 88% similarity in 100+ validations, from its own test. Planetarium was right 87 times in 100 when it names a winner (575 of 660). Different tests, so not one ranking.

What is Evidenza?

Synthetic surveys and interviews of hard-to-reach business buyers, delivered as a go-to-market plan. It is built for B2B marketing and sales teams, from startups to the Fortune 500.

Thousands of synthetic personas per category with job title, company size and industry; you describe the audience, no customer data needed.

How do Planetarium and Evidenza compare?

Row by row, from each company’s own pages. Where one publishes nothing on a point, the row says so.

  • What it does

    Planetarium

    Test ads, messages, surveys and live websites on audiences built from real people observed online; their answers are simulated.

    Evidenza

    Synthetic surveys and interviews of hard-to-reach business buyers, delivered as a go-to-market plan.
  • Built for

    Planetarium

    Agencies, brand and marketing teams, research and insights, product and growth teams

    Evidenza

    B2B marketing and sales teams, from startups to the Fortune 500
  • Where the audiences come from

    Planetarium

    Audiences built from people observed on social platforms, grouped by what they engage with; their answers are simulated

    Evidenza

    Thousands of synthetic personas per category with job title, company size and industry; you describe the audience, no customer data needed
  • How you buy

    Planetarium

    Self-serve by card: Starter $99, Pro $399, Growth $999 a month. First test free.

    Evidenza

    Full service, priced per scope after a demo. Self-service is listed as coming soon.
  • Time to a result

    Planetarium

    Half of studies in about 34 seconds

    Evidenza

    Results in 72 hours (full service)
  • Published accuracy

    Planetarium

    Right 87 times in 100 when it names a winner (575 of 660)own test1,500 published news-headline A/B tests (Upworthy, 2013 to 2015), held out and scored once (October 2026). It named a winner on 660 and called the other 840 too close. Headlines only

    Evidenza

    88% similarity in 100+ validationsown testTheir homepage, which describes it as the average match between synthetic and traditional research
  • API

    Planetarium

    API, plus MCP for AI agents, on Growth and Enterprise

    Evidenza

    Not described
  • Run it yourself

    Planetarium

    Yes

    Evidenza

    Coming soon
  • Real people take part

    Planetarium

    No, simulated answers

    Evidenza

    No, simulated answers
Planetarium and Evidenza, side by side
 PlanetariumEvidenza
What it doesTest ads, messages, surveys and live websites on audiences built from real people observed online; their answers are simulated.Synthetic surveys and interviews of hard-to-reach business buyers, delivered as a go-to-market plan.
Built forAgencies, brand and marketing teams, research and insights, product and growth teamsB2B marketing and sales teams, from startups to the Fortune 500
Where the audiences come fromAudiences built from people observed on social platforms, grouped by what they engage with; their answers are simulatedThousands of synthetic personas per category with job title, company size and industry; you describe the audience, no customer data needed
How you buySelf-serve by card: Starter $99, Pro $399, Growth $999 a month. First test free.Full service, priced per scope after a demo. Self-service is listed as coming soon.
Time to a resultHalf of studies in about 34 secondsResults in 72 hours (full service)
Published accuracyRight 87 times in 100 when it names a winner (575 of 660)own test1,500 published news-headline A/B tests (Upworthy, 2013 to 2015), held out and scored once (October 2026). It named a winner on 660 and called the other 840 too close. Headlines only88% similarity in 100+ validationsown testTheir homepage, which describes it as the average match between synthetic and traditional research
APIAPI, plus MCP for AI agents, on Growth and EnterpriseNot described
Run it yourselfYesComing soon
Real people take partNo, simulated answersNo, simulated answers

From Evidenza's own pages, listed under Sources, and ours. Read October 27, 2026.

How accurate is Evidenza?

88% similarity in 100+ validations. The figure comes from its own test: their homepage, which describes it as the average match between synthetic and traditional research.

Planetarium was right 87 times in 100 when it names a winner (575 of 660), on 1,500 published news-headline A/B tests (Upworthy, 2013 to 2015), held out and scored once (October 2026). It named a winner on 660 and called the other 840 too close. Headlines only. The full record is on the accuracy page.

When is Evidenza the better choice?

  • Your buyers are business decision-makers: buying committees, specialists, the C-suite.
  • You want a finished go-to-market plan, done for you.
  • You want positioning, segmentation and creative modules from one supplier.

When should you choose Planetarium?

  • Your audience is consumers, creators' followers or interest communities.
  • You want to run tests yourself today rather than wait 72 hours.
  • You want to test a live website or an ad with simulated visitors and viewers.

How much does Evidenza cost?

Full service, priced per scope after a demo. Self-service is listed as coming soon.

Planetarium is self-serve by card: Starter $99, Pro $399, Growth $999 a month. First test free. See pricing.

How was this page made?

We publish this page and sell in this category. Every claim about another company comes from that company’s own public pages, or a paper or partner report it cites, read on October 27, 2026, and each is listed below. Where a company publishes nothing on a point, the page says so; that does not mean it cannot do it.

Each company measures accuracy its own way, on its own tests, so the figures are shown side by side but never ranked as one league table. We did not trial the other products. Our own figures are the ones on our pricing and accuracy pages. Something out of date? Tell us through the contact page and we will correct it.

Frequently asked questions

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 17,849 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.

Related comparisons

  • Evidenza alternatives
  • Planetarium alternatives
  • Planetarium vs Simile
  • Planetarium vs Synthetic Users
  • Planetarium vs Remesh
  • All comparisons

Sources

  1. 1Evidenza, Homepage (opens in a new tab). Read October 27, 2026.
  2. 2Evidenza, FAQs (opens in a new tab). Read October 27, 2026.
  3. 3Evidenza, About (opens in a new tab). Read October 27, 2026.

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