Open Source LLM Statistics (2026)
As of November 13, 2026, 9 of the top 50 AI models on BenchLM (18%) are open-weight.
Key statistics
- As of November 13, 2026, 9 of the top 50 AI models on BenchLM (18%) are open-weight.
- As of November 13, 2026, the highest-ranked open-weight model on BenchLM is Moonshot AI's Kimi K3 at 68.42/100 and #17 overall.
- As of November 13, 2026, 94 open-weight models receive a current overall score in BenchLM's ranked cohort.
- The gap between the top proprietary model (Claude Fable 5.2) and the top open-weight model (Kimi K3) is 25.23 points on BenchLM's 100-point overall score as of November 13, 2026.
- 52% of the 1033 AI models tracked by BenchLM (534 models) are open-weight as of November 13, 2026.
- The Arena Elo gap between the top closed and top open model narrowed to 38.9 points by 2026-11-09, from 61.6 points roughly a year earlier, per Arena data tracked on BenchLM.
As of November 13, 2026, the highest-ranked open-weight model on BenchLM is Moonshot AI's Kimi K3 at 68.42/100 and #17 overall.
Kimi K3 (68.42/100)
As of November 13, 2026, 94 open-weight models receive a current overall score in BenchLM's ranked cohort.
94 models
The gap between the top proprietary model (Claude Fable 5.2) and the top open-weight model (Kimi K3) is 25.23 points on BenchLM's 100-point overall score as of November 13, 2026.
25.23 points
Methodology & sources
"Open-weight" follows the sourceType field in BenchLM's catalog. Rankings use the active BenchAlign overall score, rebuilt from current inputs on every build. Each position is labeled Supported or Estimated within one shared ordering. Arena Elo figures come from the Arena leaderboard snapshot tracked on BenchLM.
Cite these statistics
Every number on this page is generated from BenchLM's live dataset and refreshed with each data update. Link any statistic directly using its anchor, or cite the page as:
BenchLM.ai, "LLM Statistics" (November 13, 2026), https://benchlm.ai/stats/open-source-llmQuestions
How close are open-source models to closed models?
As of November 13, 2026, the top open-weight model (Kimi K3) ranks #17 overall on BenchLM, 25.23 points behind the top proprietary model (Claude Fable 5.2) on a 100-point scale.
What share of top AI models are open-weight?
18% of BenchLM's overall top 50 (9 models) are open-weight as of November 13, 2026.
What is the best open-source LLM by benchmark score?
As of November 13, 2026, Moonshot AI's Kimi K3 is the highest-ranked open-weight model on BenchLM at 68.42/100 and #17 overall. “Open-weight” describes downloadable weights; the page separates OSI-approved licenses from community and custom terms.
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