Tutorials, deep dives and product notes — built for developers.
Terminal-Bench 4.0 checked Oct 6, 2026: Claude Opus 5.5 (64.8%) and Sonnet 5.5 (61.8%) now top the public tbench.ai board, with GPT-6 Astra and GPT-6.1 Sol tied at 58.2%. Vendor runs and Artificial Analysis results are reported separately, with harness, tokens and cost per row.
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.
FrontierBench v0.1 / Terminal-Bench 3.0 historic leaderboard: Claude Opus 5 leads at 42.7%; adds Ornith-1.5-397B at vendor-reported 13.5%. Harness and version caveats preserved. Updated October 9, 2026.
FrontierCode 1.1 Main: Opus 5.5 leads at 54.6%; new Cognition entries GPT-6.1 Sol (50.2%) and Claude Haiku 5.5 (46.4%) include effort, rollout spend, API rates and token details. Updated October 9, 2026.
DeepSWE v1.1: Datacurve's standardized leaderboard is kept separate from provider runs. Adds Google-reported Gemini 4 Argon at 77.9% and Ornith-1.5-397B at 56.0%; per-task costs are marked unavailable. Updated October 9, 2026.
MCP Atlas: Muse Spark 1.2 has the highest vendor-published score (90.3%); Scale's Fable 5.1 snapshot and Ornith-1.5-397B's 80.0% public-subset result are shown separately. Cross-harness caveats and costs disclosed. Updated October 9, 2026.
Terminal-Bench 2.1 leaderboard with DeepSeek V4.1 Flash atop the public board and newly tracked Ornith-1.5-397B at 86.1% on Terminus-2 as a separate vendor run. Vals AI and Cognition runs remain distinct. Updated October 9, 2026.
SWE-bench Pro: Anthropic-reported Opus 5.5 leads at 89.9%; newly tracked vendor results include Ornith-1.5-397B (65.1%) and Qwen3.8-Omni-Flash (63.3%), kept distinct from Scale standardized results. Updated October 9, 2026.