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4 posts published so far

Oct 4, 2026
Is the most expensive AI the smartest? 23 LLMs, capability vs API price (Oct 2026)
Jaehyun Cho
Oct 2, 2026
Pretty JSON costs 3× CSV in tokens. Columnar JSON costs the same. (I measured 9 formats)
Jaehyun Cho
Oct 1, 2026
ChatGPT Pro 100 vs 200 vs 500: Every Tier Costs the Same per Unit of Usage
Jaehyun Cho
Sep 30, 2026
I measured GPT token costs in 10 Indian languages: Malayalam dropped from 10× to 1.85×
Jaehyun Cho