Tutorials, deep dives and product notes — built for developers.
Interactive Terminal-Bench 3.0 leaderboard with Claude Opus 5 at 42.7%, GPT-5.6 Sol at 34.6%, GLM 5.3 at 28.3%, and all tracked frontier agent models ranked. Updated August 2026.
Interactive FrontierCode v1.1 Main leaderboard with Claude Fable 5 at 53.5%, Claude Opus 5 at 53.4%, Grok 4.6 at 48.0%, and 34 models ranked by production-code pull request quality. Updated August 14, 2026.
Interactive DeepSWE v1.1 leaderboard updated with Muse Spark 1.3 at 75.4%, GPT-6 Astra at 74.1%, and Claude Fable 5.1 at 67.4%. 28+ models ranked by long-horizon software engineering ability. Updated September 2026.
Interactive Terminal-Bench 2.1 leaderboard updated with GLM-5.3-Flash at 84.3% and Qwen3.8-Flash-Next added. 50+ models ranked by CLI coding ability. Updated August 28, 2026.
Interactive SWE-bench Pro leaderboard: Claude Fable 5.1 takes #1 at 81.2%, with Mythos 5/Fable 5 at 80.3% and Opus 5 at 79.2%. 50+ models ranked by real coding ability. Updated September 8, 2026.
What SWE-bench Pro actually measures, how it works (1,865 tasks, 41 repos, 123 languages), why OpenAI abandoned SWE-bench Verified, the DeepSWE audit that found 32% verifier errors, and how to use coding benchmarks correctly. The definitive explainer.