Tutorials, deep dives and product notes — built for developers.
Every AI model claims a 1M-token context window. But only GPT-5.5 and Claude Opus 4.6 actually use it. We analyzed MRCR v2, NIAH-2, and Graphwalks to show the 60-point gap between the best and worst "1M-capable" models — and which one to trust for long-context coding.
Which frontier AI model tells the truth? We rank 18 models using both Vectara HHEM and AA-Omniscience. GPT-5.4 Mini leads Vectara (5.5%); Gemini 3.1 Pro tops AA-Omniscience (32.9). The reasoning paradox: thinking mode amplifies hallucination 2-3×.
A comprehensive, data-driven comparison of Claude Opus 4.8 and GPT-5.5 — the two frontier AI models battling for supremacy in May 2026. Benchmark deep-dives, pricing analysis, DeepSWE controversy, and practical guidance on which model to use.