GLM-5.2 on Siray: Open-Source Coding Model at 20% Off

Zhipu AI's GLM-5.2 has become one of the most talked-about model releases of the year — a fully open-weight model that independent benchmarking house Artificial Analysis ranks as the most capable openly available language model on the market, competitive with closed frontier systems on coding and agentic tasks. It's now available on Siray, at 20% off Zhipu's official API pricing.Key Takeaways

• GLM-5.2 is Zhipu AI's flagship open-weight model: MIT-licensed, 744B-parameter MoE (40B active), 1M-token context, tuned for coding, reasoning, and agentic tool use.
• Independent benchmarking ranks it as the most capable openly available LLM at release, competitive with closed frontier models.
• GLM-5.2 is available on Siray now, at 20% off Zhipu's official API rate — same one API key as every other model on the platform.

What Is GLM-5.2

GLM-5.2 is Zhipu AI's (operating internationally as Z.ai) latest flagship model, released June 2026 as the successor to GLM-5.1. It's a mixture-of-experts model with 744 billion total parameters and 40 billion active parameters — the same size class as its predecessor, but with the context window quadrupled to 1 million tokens. It ships under an MIT license, meaning the weights are downloadable, fine-tunable, and self-hostable, alongside a standalone hosted API.The model offers selectable High and Max reasoning modes and is explicitly built for long-horizon coding and tool-driven agent work rather than one-off chat prompts. Independent measurements from Artificial Analysis rank GLM-5.2 as the most capable openly available model on the market at launch.

Built for Coding and Agents

GLM-5.2's positioning is narrower than a general chat model — it's tuned for software engineering, multi-step reasoning, and agentic workflows where a model has to plan, call tools, and carry context across a long task. CNBC covered the release with a blunt assessment: "GLM 5.2, you're seeing the first model where it's really competitive with some of these closed-source frontier models." For teams building coding assistants, autonomous agents, or long-context research tools, that combination of open weights and frontier-level agentic performance is the draw.

GLM-5.2 on Siray: 20% Off Official Pricing

Zhipu's official API rate for GLM-5.2 is $1.40 per million input tokens and $4.40 per million output tokens. On Siray, GLM-5.2 is available at 20% off that official rate:

No separate Zhipu account or billing relationship is required — GLM-5.2 sits behind the same API key as every other model on Siray, alongside video, image, and voice models, with normalized request/response formats across all of them.

Developer Note: One Key, Same Integration

Because Siray normalizes responses across every model it hosts, adding GLM-5.2 to an existing integration is a model-string change, not a new SDK or auth flow. Full integration details live at docs.siray.ai; new accounts get free credits to test.GLM-5.2 gives you a frontier-competitive open coding and agent model — and Siray gives you it at a lower cost than going direct.

FAQ

What is GLM-5.2?

GLM-5.2 is Zhipu AI's flagship open-weight large language model, released June 2026, tuned for coding, reasoning, and agentic tool use, with a 1-million-token context window and an MIT open-source license.

How much cheaper is GLM-5.2 on Siray?

Siray prices GLM-5.2 at 20% off Zhipu's official API rate — $1.12 per million input tokens and $3.52 per million output tokens, versus the official $1.40 / $4.40.

How do I access GLM-5.2 on Siray?

Create a Siray account, grab your API key, and call GLM-5.2 the same way you'd call any of Siray's other 300+ models — no separate Zhipu account needed.Ready to build with it?

Create your free Siray account and start calling GLM-5.2 today — same key, 20% off official pricing.