Tutorials, deep dives and product notes — built for developers.
From 33.4% Verified to 93.9% — Fable 5 breaks 90%. GPT-5.5's 47-day Terminal-Bench reign ends. Track 27 months of AI coding progress with new charts. Updated June 9, 2026.
A heavy AI coding user burning 200M output tokens/month on GPT-5.5 pays $6,000/month. The same workload on DeepSeek V4 Pro costs $174. The benchmarks gap? 3.2 points on SWE-bench Pro. Here's how to build a coding stack that gives you 95% of flagship performance for 3% of the cost.
Claude Fable 5 is the new #1 for game development (80.3% Pro, 88.0% Terminal-Bench, 85.0% OSWorld). Unity C#, Godot, Roblox, Unreal C++ — updated June 9, 2026.
Claude Fable 5 is the new Python coding king (80.3% SWE-bench Pro). Updated June 9, 2026 with full Fable 5 benchmarks.