Benchmark & Architecture · 2026-09-20 · 5 min read
Does ChatGPT Hallucinate Stock Data? We Tested the Same NVIDIA Prompt in ChatGPT vs. Willow
When financial researchers ask whether ChatGPT hallucinates stock data, the issue is rarely model intelligence; it is system architecture. General-purpose assistants answer from memory or run slow sandbox scripts, while specialized AI stock research tools pull live SEC filing receipts. We ran an identical benchmark test on NVIDIA (NVDA) to measure latency, visual interfaces, data freshness, and grounding.