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General AI assistants

NotebookLM

Google tool that answers questions grounded in documents you upload.

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The catch

Only knows what you upload; no market data.

Pricing

Not published (pricing by quote)

Source: vendor pricing page. Checked Nov 3, 2026. Prices change; confirm with the vendor.

Sources

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ChatGPT

General AI assistants

OpenAI’s general assistant for drafting outreach, listing copy, summaries and custom GPTs.

Pricing
Free · from $8/mo
Best for
Every broker
The catch
General model: no CRE data of its own, can invent numbers; verify every figure.
Pricing and details
C

Claude

General AI assistants

Anthropic’s assistant, strong at reading long leases, OMs and rent rolls.

Pricing
Free · from $20/mo
Best for
Brokers working from long documents
The catch
No sourcing of its own: only as good as the files you give it.
Pricing and details
P

Perplexity

General AI assistants

Answer engine with cited web results for market and tenant research.

Pricing
Free · from $17/mo
Best for
Quick tenant and market research
The catch
Web sources only; misses paywalled comps and private deal data.
Pricing and details
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