The closest alternatives to Synthetic Users are Candor, Articos and Perplica, which also run one-to-one interviews with synthetic participants (often called synthetic personas). Minds, Aaru and Ask Rally answer a different question: how a group or a population responds. Synthetic Users starts at $12,500 a year, and most of these start lower or free.
We make Candor, so weigh our view with that in mind. Every vendor fact below comes from the vendor’s own site or a linked announcement, and Candor gets the same treatment as everyone else.
| Tool | What you ask | What participants are built from | Price | Published accuracy |
|---|---|---|---|---|
| Synthetic Users | One-to-one interviews, run by you or automated | Personality profiles with an emotional layer, routed across several AI models, plus your own uploads if you add them | From $12,500 a year, with $2 to $60 per interview from the yearly pool | 85 to 92% “parity” from one study it ran itself: 8 real and 8 synthetic interviews with UK teachers, February 2024 |
| Candor | One-to-one interviews, run by you or by Candor’s automated interviewer | Your uploaded research first, then web research, with personality traits from population data by region and occupation | Free: $0 a month, $10 per automated interview. Standard: $75 a month, $7 per automated interview. Interviews you run yourself are free. | None yet. No published test against real people. |
| Articos | One-to-one interviews, plus message and A/B tests | Your website, with a Big Five personality model and a bias model | Starter $79 a month, Pro $199 a month, 14-day trial | 86% recall across 46 studies, from a paper it wrote itself |
| Perplica | One-to-one interviews and small focus groups, plus concept and message tests | Material you upload. Each field shows the quote it came from and a confidence level. | Free during its private beta. It plans to charge per study. | None published. It calls itself a rehearsal for talking to real customers. |
| Minds | Surveys, interviews and built-in methods such as MaxDiff and conjoint, on reusable audiences | Your brief, files and links, plus web research and public social-media signals | $0.12 per response, or Pro at $199 per seat a month | A 93.99% match to a published UK survey |
| Aaru | Survey questions answered by large populations of AI agents | Public records, licensed data such as anonymized transactions, plus your own data | Not published. You contact its team. | 2,993 survey questions with an average gap of 3.53 points per answer option |
| Ask Rally | One question to a group of 5 to 500 personas, like a fast focus group or poll | Personas calibrated on interviews with real people. It can also clone your transcripts or survey results. | Free trial, then $20, $100 or $500 a month | No figures. It says its personas pass a modified Turing test judged by an AI model. |
Facts come from each vendor’s own site or a linked announcement, including the Synthetic Users pricing page, Articos pricing, Perplica, Minds pricing, Aaru’s validation study and Ask Rally, checked on October 14, 2026. Prices change, so confirm before you buy. If a row is out of date, tell us and we’ll fix it.
Usually for fit rather than quality. Synthetic Users sells annual plans from $12,500 a year, which suits a team with a research budget and a steady flow of studies. A team that wants to run one study first, or pay as it goes, needs a different way in.
Others want a different kind of answer. Synthetic Users runs interviews, which explain why people think what they think. If you need to know what share of a market will pick option A, a survey-style tool fits better. Others again want to see exactly what each participant rests on, field by field, before they trust a finding.
Candor. Candor gathers evidence about your audience before it builds anyone: your own research first, then web research. Each participant is built from that evidence, and most details on a profile carry a label saying whether there is a source behind it, it follows from the evidence, or Candor assumed it. You interview each participant yourself or let the automated interviewer do it, and participants remember earlier conversations within a study. Candor vs Synthetic Users compares the two in detail.
Articos. You paste in your website, and Articos builds personas from it with a Big Five personality model and a bias model, then interviews them and writes a report. It is self-serve and priced by the month. Its evidence page reports 86% recall across 46 studies, measured against published usability research, in a paper it wrote itself. It doesn’t describe uploading your own research.
Perplica. Perplica builds personas from material you supply, and each field shows the quote it came from and a confidence level. In its strict mode a persona says it doesn’t know rather than guessing. It is in private beta, free for now, with no published accuracy test.
Minds builds reusable synthetic audiences and runs surveys, concept tests and methods such as MaxDiff and conjoint on them. It charges per response, or per seat on its Pro plan. Candor vs Minds covers it in depth.
Aaru simulates how a whole population answers a survey, with thousands of AI agents per audience. It has published more accuracy evidence than anyone else here, and it sells to large organizations without a public price. Candor vs Aaru covers it in depth.
Ask Rally puts one question to a group of personas and summarizes the answers, which suits testing a headline or a message quickly. Plans start at $20 a month. It positions its answers as an early, directional read.
No one has tested them against each other, so read every accuracy figure as the vendor’s own claim. Aaru’s validation study is the largest, at 2,993 survey questions. Minds compares its audiences with a published survey.
The interview tools have less behind them. Synthetic Users’ 85 to 92% parity figure comes from one study it ran itself, comparing 8 real and 8 synthetic interviews, scored on criteria it says involve judgment. Articos’s figure comes from its own paper. Candor and Perplica have published nothing yet. Whichever you pick, test what matters with real customers before you bet on it.
When track record and a public body of method matter most. Synthetic Users has operated publicly for several years, and Candor is newer. Its Science hub explains its method in detail and cites 21+ peer-reviewed papers on synthetic research. It also routes interviews across several AI models, which some teams want for variety in the answers.
If your team runs research all year and an annual plan fits your budget, those are real reasons to choose it. The alternatives make more sense when you want to start small, need survey-style numbers, or want to see what each participant is built from.
Some tools that show up in this search interview real people with an AI moderator, and add a synthetic layer on top. They are a different category, but worth knowing.
For how synthetic research and research with real people fit together, see traditional vs synthetic user research.
For a wider list, the guide to the best synthetic user research tools compares 29 platforms by category. The full comparison hub has every head-to-head page, and Candor’s pricing page has the plan details.
The closest alternatives are Candor, Articos and Perplica, which run one-to-one interviews with synthetic participants as Synthetic Users does. If you want numbers for a population, look at Minds or Aaru, which answer survey-style questions. If you want quick reactions from a group to one question or message, Ask Rally works like a fast focus group. We make Candor, so read the comparison table with that in mind: it lists each tool's price, what its participants are built from and what accuracy evidence it publishes.
Most alternatives cost less to start. Synthetic Users plans start at $12,500 a year, and each interview costs $2 to $60 from that yearly pool. Candor has a free plan at $0 a month with $10 automated interviews, and a Standard plan at $75 a month with $7 automated interviews. Articos starts at $79 a month. Ask Rally starts at $20 a month after a free trial. Minds charges $0.12 per response, or $199 per seat a month on Pro. Perplica is free during its private beta. Aaru doesn't publish prices.
Yes, a few. Candor's Free plan costs $0 a month: interviews you run yourself are free, and each automated interview costs $10. Perplica is free while it is in private beta, which you apply to join. Articos offers a 14-day trial with no card, and Ask Rally has a free trial with small group sizes. These let you run a real study before you commit money, which matters because Synthetic Users sells annual plans.
No one has tested these tools against each other on the same questions, so there is no fair ranking. What you can compare is the evidence each one publishes. Aaru has published the largest test: 2,993 survey questions, with an average gap of 3.53 percentage points per answer option. Minds reports a 93.99% match to a published UK survey. Articos reports 86% recall across 46 studies in a paper it wrote itself. Synthetic Users reports 85 to 92% parity from one study of 8 real and 8 synthetic interviews. Candor, Perplica and Ask Rally publish no figures.
We don't know, and we won't claim it. Candor hasn't published a test of its output against real people. Synthetic Users has published one small study of its own. Both build participants with personality models and run one-to-one interviews, and neither has an independent test behind it. The real differences are design and fit: what participants are built from, how much of that you can see, and how you pay. Treat findings from either tool as a map of what to test with real customers next.
With most of them. Candor treats your uploaded research, such as interview transcripts, survey exports and CRM notes, as its strongest evidence, then adds web research. Synthetic Users lets you upload material to ground its participants. Perplica builds personas from what you upload and shows a quote and a confidence level for each field. Minds takes your brief, files and links. Ask Rally can clone your transcripts or survey results into personas. Articos builds from your website and doesn't describe uploading your own research.
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