Find hard-to-locate company tax IDs and addresses with GPT-5 Pro
- Source date:
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- How we verify
Evidence: Described by posterThe person describes what happened in words, without screenshots or video.
Outcome
Working for over 45 minutes, GPT-5 Pro found correct FEINs for 4 of 6 subsidiaries on the Florida Division of Corporations site and one address via a FINRA BrokerCheck report; the poster double-checked the FEINs.
Agent
Prompt Original prompt
Exact prompt as published in the source.
Please find FEINs and addresses for the following companies: [names]. Use high-quality sources only.
Source
https://x.com/deredleritt3r/status/1986099337303126390
By prinz (@deredleritt3r) · Published Nov 5, 2025 · Added Oct 16, 2026 · Last verified Oct 16, 2026
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