Z.ai
GLM-5.2Open Weight
GLM-5.2 is an AI model released by Z.ai on Tuesday, Jun 16 2026, 70 days after GLM-5.1. It is an open-weight model — the trained weights are available to download and run. It is a 744B parameter model with a 1M token context window. Benchmark results (shown below) cover BullshitBench v2, SWE-Bench Pro, CursorBench v3.1, Next.js Evals, Terminal-Bench 2.1, Humanity's Last Exam, and 3 more.
Benchmarks
Nonsense detection
BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better.
31%+9%vs GLM-5.1
Agentic coding
SWE-Bench ProCan the AI fix real bugs in real software? It's handed actual problems from open-source projects and has to write code that genuinely solves them. Higher is better.
62.1%
Agentic coding
CursorBench v3.1Cursor's own test of harder, real-world coding tasks inside a code editor. Higher is better.
54.6%
Next.js coding
Next.js EvalsVercel's open eval of how well AI coding agents build and migrate real Next.js apps — measured as the share of tasks the agent completes successfully. Higher is better.
88%+13%vs GLM-5.1
Agentic terminal coding
Terminal-Bench 2.1Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? Higher is better.
81%
Multidisciplinary reasoning
Humanity's Last ExamHumanity's Last Exam — extremely hard expert questions across many subjects, written so you can't just look up the answer. “No tools” means the AI answers on its own. Higher is better.
40.5%+15.7%vs GLM-4.7
no tools
54.7%+2.4%vs GLM-5.1
with tools
Science
GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better.
91.2%+5%vs GLM-5.1
Knowledge work
GDPval-AA v2economically valuable knowledge work (v2, re-based Elo)
1514
Community preference (code)
Arena Elo (Code)Like the text arena, but people vote on which AI writes better code. The votes become a chess-style Elo rating on arena.ai. Higher is better.
1580+53vs GLM-5.1