Open Source LLM Statistics (2026)
Updated July 2, 2026 · Auto-generated from BenchLM's live dataset on every data refresh
As of July 2, 2026, 17 of the top 50 AI models on BenchLM (34%) are open-weight.
Key statistics
- As of July 2, 2026, 17 of the top 50 AI models on BenchLM (34%) are open-weight.
- The highest-ranked open-weight model on BenchLM is Z.AI's GLM-5.2, at #6 overall as of July 2, 2026.
- The gap between the top proprietary model (Claude Mythos 5) and the top open-weight model (GLM-5.2) is 9 points on BenchLM's 100-point overall score as of July 2, 2026.
- 52% of the 272 AI models tracked by BenchLM (141 models) are open-weight as of July 2, 2026.
- The Arena Elo gap between the top closed and top open model narrowed to 31.7 points by 2026-05-07, from 50.7 points roughly a year earlier, per Arena data tracked on BenchLM.
GLM-5.2 (#6 overall)
The highest-ranked open-weight model on BenchLM is Z.AI's GLM-5.2, at #6 overall as of July 2, 2026.
9 points
The gap between the top proprietary model (Claude Mythos 5) and the top open-weight model (GLM-5.2) is 9 points on BenchLM's 100-point overall score as of July 2, 2026.
Methodology & sources
"Open-weight" follows the sourceType field in BenchLM's catalog. Rankings use BenchLM's overall score (sourced, non-generated benchmark rows only). Arena Elo figures come from the Arena leaderboard dataset 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" (July 2, 2026), https://benchlm.ai/stats/open-source-llmFrequently Asked Questions
How close are open-source models to closed models?
As of July 2, 2026, the top open-weight model (GLM-5.2) ranks #6 overall on BenchLM, 9 points behind the top proprietary model (Claude Mythos 5) on a 100-point scale.
What share of top AI models are open-weight?
34% of BenchLM's overall top 50 (17 models) are open-weight as of July 2, 2026.
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