Tutorials, deep dives and product notes — built for developers.
Claude Sonnet 5 vs DeepSeek V4 Pro: Sonnet leads every coding benchmark (+7.8 Pro, +9.2 HLE tools). DeepSeek is #1 global on LiveCodeBench (93.5%), MIT open-weight, and 7.8× cheaper per task ($0.12 vs $0.90). Is 7.8 more Pro points worth 7.8× the cost?
Claude Sonnet 5 vs Qwen 3.7 Max: Sonnet leads coding (+2.6 Pro, +4.8 Verified). Qwen dominates math (92.4% GPQA), runs 35-hour autonomous agents, and is 2.7x cheaper ($3.75 vs $15 output). The coder vs the marathon runner — full comparison.
Interactive pricing calculator comparing 29 AI coding models. Enter monthly tokens, adjust input/output ratio, toggle caching. Claude Fable 5 added at $10/$50. Updated June 9, 2026.