{"slug": "announcing-pcbeval", "title": "Announcing PCBEval", "summary": "Opus 5 is the only AI model among GPT-5.5, Gemini 3.1 Pro Preview, Fable 5, and Opus 5 to correctly identify a PCB alignment issue in a test called PCBEval, according to an unnamed source. The source invites top-tier labs to request 100k additional failure examples.", "body_md": "# Announcing PCBEval\n\n### Me:\n\n“are the pads and the pins aligned” (attaching the image below)\n\n### AI:\n\nGPT-5.5: “From what I can see in the image, yes—the pads and pins appear to be aligned correctly.”\n\nGemini 3.1 Pro Preview: “Based on the image provided, the pins that are present on the component are physically aligned squarely over the pads beneath them.”\n\nFable 5: “Yes, they look properly aligned.”\n\nOpus 5: “the two side columns line up fine, **but the part doesn’t match the footprint**”\n\nYay! Opus 5 passes PCBEval!\n\nReach out if you are a top tier lab and want 100k more examples on which these models fail! Bye! xx", "url": "https://wpnews.pro/news/announcing-pcbeval", "canonical_source": "https://blog.greg.technology/2026/07/29/announcing-pcbeval.html", "published_at": "2026-07-29 14:08:20+00:00", "updated_at": "2026-07-30 18:24:57.425046+00:00", "lang": "en", "topics": ["artificial-intelligence"], "entities": ["GPT-5.5", "Gemini 3.1 Pro Preview", "Fable 5", "Opus 5", "PCBEval"], "alternates": {"html": "https://wpnews.pro/news/announcing-pcbeval", "markdown": "https://wpnews.pro/news/announcing-pcbeval.md", "text": "https://wpnews.pro/news/announcing-pcbeval.txt", "jsonld": "https://wpnews.pro/news/announcing-pcbeval.jsonld"}}