Zhipu AI

GLM-5.2

Released Jun 13, 2026 · knowledge cutoff 2026-03

Status: Superseded
Location: China
Modality: Text
Context window: 1M
Max output: 128K
Speed: —
Price ($/MTok in / out): $1.40 / $4.40
Cost per task (max effort): $0.30
Open weights: Yes

Benchmarks6 of 8 reported

MMLU-Pro

80.6%

GPQA Diamond

91.2%

AIME (latest)

99.2%

Humanity's Last Exam

40.5%

LMArena Elo

1469

ARC-AGI-2

22.8%

SWE-bench Verified

—

Terminal-Bench 2.1

—

Strengths & weaknesses

Strengths

Produces clean, production-ready code first time more often than its cost suggests
Reliable multi-turn tool calling — it doesn't lose track of what it already called
Unrestricted licence and mainstream inference-stack support make self-hosting straightforward

Weaknesses

Very verbose — roughly double its predecessor's output per task, which shows up on both the bill and the clock
Noticeably slower per task than closed flagships of the same period
Text-only, so no screenshots, diagrams or PDFs

SWE-bench Pro 62.1 reported; no SWE-bench Verified figure has been published. GPQA Diamond sources conflict (91.2 per the official Hugging Face model card vs ~80.3 in some third-party trackers) — official figure used. HLE 40.5% no tools / 54.7% with tools. Max output listed as 128K in most reporting; some sources cite up to 163,840 for extended reasoning. LMArena Elo 1469 is the "GLM-5.2 (max)" text-arena listing (arena.ai), the only GLM-5.2 variant on the board.

For developers

API model strings

Not researched

Licence

Not researched

Retirement

No retirement announced

Lineage

No recorded predecessor