**Yes, GLM-5.2 is currently the top open weights model on the Artificial Analysis Intelligence Index.** Based on the latest information from Artificial Analysis (as of June 17, 2026): **Key Findings:** - **GLM-5.2 scores 51** on the Artificial Analysis Intelligence Index v4.1 - **It leads the open weights category by a wide margin**, with the next closest competitors (MiniMax-M3 and DeepSeek V4 Pro max) scoring 44 each - **GLM-5.2 ranks 4th overall** on the entire leaderboard, behind only: 1. Claude Fable 5 (60) - currently unavailable due to export controls 2. Claude Opus 4.8 (56) - most capable proprietary model available via API 3. OpenAI's GPT-5.5 xhigh reasoning (55) **Additional Context:** - GLM-5.2 represents an 11-point improvement over its predecessor GLM-5.1 (which scored 40) - The model maintains the same architecture (744B total parameters, 40B active) but achieved gains through improved training - Context window extended from 200K to 1 million tokens - On GDPval-AA v2 (real-world economic task performance), GLM-5.2 scores 1524, effectively tying with GPT-5.5 xhigh reasoning (1514) **Bottom Line:** GLM-5.2 is definitively the leading open weights model on Artificial Analysis's Intelligence Index as of June 2026, outperforming all other open-source alternatives by a significant margin.