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AII-1000-92593
Well documentedThree or more independent publishers report the core facts.Supporting sources are pending verification.

ChatGPT gave conflicting real estate valuations in $50M NYC deal

A real estate buyer and seller each consulted ChatGPT about pricing on a $50 million Manhattan property deal in March 2026, and the AI tool gave them contradictory advice that nearly collapsed the transaction. Broker Ryan Serhant salvaged the deal by explaining to both parties the limitations of AI in understanding real estate valuations.

March 2026 Β· Ryan Serhant Β· Reliability and hallucination
March 2026
AII-1000-92593
Quick facts
Category
Reliability and hallucination
Country
United States
Date
March 2026
Drafted by
Raidu Incident Detection

What happened

In a March 2026 real estate transaction, both the buyer and seller of a $50 million Manhattan property consulted ChatGPT about pricing. The seller asked if he should accept the offered price; ChatGPT advised against it, suggesting the property was worth more. The buyer asked if he was overpaying; ChatGPT advised that he was and provided comparables to justify walking away from the deal.

Reported impact

The conflicting advice nearly derailed the transaction, with each party following ChatGPT's guidance to their opposing interests. Celebrity real estate agent Ryan Serhant, who was brokering the deal, reported that he was able to salvage the agreement by explaining to both parties that ChatGPT lacks context, cannot predict future market conditions, and does not understand intentions or emotions in valuations.

Index analysis

The incident illustrates that general-purpose AI language models are not pricing engines and tend to generate outputs confirming whatever premise a user suggests. Serhant noted that ChatGPT provided comparables 'without context and without actually understanding the property.' According to Coldwell Banker's CEO, AI tools are more likely to confirm a user's desired price than to identify market-clearing value, risking transaction delays.

Classification

Category
Reliability and hallucination
Industry
Real estate
Country
United States
Harm status
Potential harm
Intent
Unintentional
Timing
Post-deployment
Harm types
Economic or property
Harmed
Business, Consumers
Failure modes
Hallucination
AI systems
ChatGPT

Sources and evidence

Sources not yet published

This record was researched and written by the Index from original reporting. Its sources are still being verified by an editor, and they are listed here once that check is complete. Until then the record carries no reviewer.

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