If you could pick one · Prompt 7 of 8 · September 2026

A real buyer question from the September 2026 snapshot, asked 3× to each of the three models. 9 answers recorded.

“If you could only pick one commercial real estate platform, which would it be and why?”

ChatGPT answered 3× this snapshot

If I had to pick just one, I’d choose CoStar. Why Most comprehensive data: Listings, ownership, comps, rents, vacancies, sales, tenants, loan data, market analytics. Industry standard: It’s the default platform at many brokerages, investment shops, lenders, and appraisal firms. Best all-around tool: If you only get one platform, breadth matters more than specialization, and CoStar covers the most use cases. The…

Named across its answers: 1. CoStar2. LoopNet3. Reonomy4. Crexi5. Trepp

Verbatim excerpt from one collected ChatGPT answer; formatting flattened, words untouched.

CoStar swept every answer on this question, earning the first recommendation slot all 9 times across all three models, making it the clearest possible winner in AI-generated advice. Crexi appeared just as consistently but never led, while MRI Software and Yardi Voyager, the top two category brands overall, were completely absent from this buyer prompt.

AI-generated read of the September 2026 measurements.

Who wins this question

Owned Consensus

All three models name CoStar, LoopNet, Reonomy and Crexi on this question.

ChatGPT

Claude

Gemini mentioned · first · avg. pos

CoStar 111111111 9/9 · 9× first · #1

Crexi 335533222 9/9 · never first · #3.1

LoopNet 2944225 7/9 · never first · #4

Reonomy 426433 6/9 · never first · #3.7

Yardi Matrix 434 3/9 · never first · #3.7

CompStak 45 2/9 · never first · #4.5

Trepp 82 2/9 · never first · #5

Argus 2 1/9 · never first · #2

REIS 3 1/9 · never first · #3

MSCI Real Assets 4 1/9 · never first · #4

ProspectNow 5 1/9 · never first · #5

Axiometrics 5 1/9 · never first · #5

Each square is one collected answer; the number is the brand's position in that answer. Lime = the very first recommendation. Unlinked brands were named by the models here but sit outside this category's published top 15 overall. Showing the top 12 of 21 brands named at least once. Never mentioned here: MRI Software, Yardi Voyager, Buildium, VTS, Buildout, DoorLoop, TenantCloud, Stessa, Dealpath.