Z.ai · llm model

GLM-5.2

GLM-5.2 is a Z.ai language model released Jun 16, 2026; Z.ai's newest language model in our dataset is GLM-5.3-Flash. Z.ai's GLM-5.2, released Jun 16, 2026 with a 1M-token context; Mistral's changelog lists it as retiring on Oct 31, 2026 in favor of GLM-5.3. Verified against vendor sources on Oct 26, 2026.

Reported Last verified Oct 26, 2026 · All models · JSON · Markdown

ReleasedJun 16, 2026
Context window1M1,000,000 tokens

Modalities not verified

Key facts

GLM-5.2: key facts with sources
Fact	Value	Source
Vendor	Z.ai	n/a
Released	Jun 16, 2026	source
Status	generally available	n/a
Context window	1,000,000 tokens (1M) Z.ai describes this as 1M lossless context.	source

Where GLM-5.2 sits in our data

Released Jun 16, 2026 (week 25 of 2026), in June 2026. Other models in our data released that month: Claude Sonnet 5, Nano Banana 2 Lite, Claude Fable 5, Claude Mythos 5, North Mini Code.
The previous Z.ai model we track is GLM-5.1 (Apr 7, 2026), 70 days earlier.
Of the 60 models in our data with a published context window, GLM-5.2 has the number 34 largest (1M tokens). Our data is not every model on the market.
All releases by date: AI model releases by month · new AI models this week. Choosing for code: best LLM for coding.

How GLM-5.2 differs from GLM-5.3

Read from the recorded facts of the two models, not from a head-to-head test. We have not run either.

We have no recorded price for GLM-5.2; GLM-5.3 has one.
Context window is 1M tokens against 1.05M for GLM-5.3.
GLM-5.2 came out 59 days before GLM-5.3.
Facts for the other model: GLM-5.3.

What we tested

Nothing yet. We have not run GLM-5.2 ourselves, so every fact on this page is Reported from the sources below. When we do test it, the scope will be stated here and in our test logs. See methodology.

Not verified, left out

We could not confirm these on a vendor page, so we do not state them.

License and price were not captured.