COMPARE
CrowdOS vs Aaru. A panel that disagrees.
MCP is on every plan, Free included. The panel is drawn from census data and disagrees with itself. Aaru describes itself as behavior simulation at the scale of the real world: a product, a price, a message, or a strategy, tested against simulated populations.
WHO IT IS FOR
A census panel an agent can call.
CrowdOS is the crowd an agent queries. MCP is on every plan, Free included. Each respondent is a persistent persona sampled from census distributions. The panel disagrees with itself.
Aaru describes itself as behavior simulation at the scale of the real world. Its public pages say a team tests a product, a price, a message, or a strategy against simulated populations grounded in demographic, behavioral, and outcomes data.
WHAT CROWDOS FIELDS
These are the CrowdOS facts. Aaru's public description is in the section above.
01
MCP on every plan, Free included.
An AI agent calls run_focus_group, run_debate, compare_options, estimate_reach, preview_cost and the rest of the study tools. Free is up to 20 respondents, 5 requests a minute and a $5 monthly MCP spend ceiling. Pro is 500 respondents, 30 requests a minute and $500. Max is 1,000 respondents, 120 requests a minute and $2,500. Pricing instruments and MaxDiff are on Pro and Max. The REST API is Enterprise-only. Studies draw the wallet at the same rates as the web: Pulse at $0.02 a respondent, Screening Room from $0.025, Ads Labo at $0.015. A small focus group costs about $0.40.02
A census panel that disagrees.
Each respondent is a persistent persona sampled from census distributions, with a demographic identity that survives across studies. The panel disagrees with itself. One model role-playing a panel is one voice.03
The studies CrowdOS already sells.
Pulse is a vote, a debate, or a comparison. Screening Room pressure-tests a creative, a concept, or a deck. Ads Labo is a forced choice among two to four ad variants. Van Westendorp and Gabor-Granger read a price. MaxDiff orders messages, claims, reasons or criteria, on Pro and Max.
THE OPINION BENCHMARK
The published opinion benchmark.
On the Pew opinion benchmark, the crowd's opinion distribution matches published polling at 93.3% parity, with a mean absolute error of 3.36 percentage points and a Pearson r of 0.984. That figure measures opinion. Creative ranking against a live campaign is a separate measurement.
THE CROWD
Census distributions, then the question.
The crowd is drawn from census distributions across 24 markets.
WHERE THIS FITS
The same crowd, asked a different question.
Pulse, Screening Room, Ads Labo and the pricing instruments run on this crowd. MCP is on every plan, Free included.
FAQ
How does CrowdOS compare with Aaru?
CrowdOS vs Aaru: CrowdOS puts MCP on every plan, Free included. The panel is drawn from census data and disagrees with itself. Aaru describes itself as behavior simulation at the scale of the real world, with simulated populations grounded in demographic, behavioral, and outcomes data. On the Pew opinion benchmark, the crowd's opinion distribution matches published polling at 93.3% parity, with a mean absolute error of 3.36 percentage points and a Pearson r of 0.984.
Where does Aaru sit next to CrowdOS?
Aaru is a public product. Its pages describe behavior simulation at the scale of the real world. CrowdOS is the MCP server and the census panel. The Synthetic Users comparison is on its own page.
Ask the crowd from the agent you already use.
MCP is on every plan, Free included. The panel disagrees with itself.