Developer Tests Logprobs to Detect LLM Hallucinations

A developer conducted over 60 local experiments to see if LLMs like Gemma and Qwen can detect their own hallucinations using logprobs. The findings suggest that models can indeed exhibit "confident but incorrect" factual recall during the initial stages of reasoning.

2026-08-12 ~ 2026-08-12 · 2 related posts

• Can LLMs catch their own hallucinations by reading logprobs? A Reddit experiment — Any-Chipmunk5480 · 2026-08-12
• Empirical Test: Are LLMs Actually Confident During First Factual Recall? — Any-Chipmunk5480 · 2026-08-12