GLM-5.2 is a text AI model developed by Z.AI with 744 billion parameters.

Is GLM-5.2 open source?

Yes, GLM-5.2 has open weights and can be downloaded and self-hosted.

What is GLM-5.2's context window?

GLM-5.2 supports a context window of 1,000,000 tokens.

GLM-5.2

Z.AITEXT Open weight

Provider: Z.AI
Modality: TEXT
Parameters: 744B
Context window: 1,000,000 tokens
Weights: Open
Released: 16 Jun 2026

Compare GLM-5.2 with others

GLM-5.2 (June 2026) is Z.AI's strongest open-weight model for long-horizon autonomous coding — a 744B MoE with a stable 1M-token context, released under MIT.

Best for

Long-horizon autonomous / agentic coding
Whole-repo work with a stable 1M-token context
Self-hostable frontier-class open model (MIT)
Works in Claude Code, Cline, Kilo Code and more

How it compares — and the India angle

Beats GPT-5.5 on several long-horizon coding benchmarks at ~1/6th the cost — a serious value pick for Indian dev teams.
MIT open weights (744B) mean full data control and self-hosting, though the size needs a real GPU cluster.
New IndexShare architecture cuts 1M-context compute ~2.9x, making long-context cheaper.

Benchmarks

Representative public scores (approximate, higher is better) for relative comparison. Check the provider for the latest official results.

GPQA Diamond91

AIME (math)99

SWE-bench Pro62

Terminal-Bench81

How to access

MIT open weights (744B-A40B). API ~$1.40 / 1M input, ~$4.40 / 1M output. Coding plans from ~$12.60/mo.

Access GLM-5.2