Tutorials, deep dives and product notes — built for developers.
GPT-6 Luna vs GPT-5.4 Mini compared: rate card, context windows, knowledge cutoffs, and the shared Artificial Analysis harness where Luna leads the Intelligence Index 37 to 24 at 6.4x lower cost per task, while mini wins on speed. Vendor scorecard gaps stated honestly.
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.