GLM-5.2: Z.AI's 1M-token context model
1M tokens · Text / Code · Prompt cache
Okou no longer runs GLM-5.2. This page is kept as a reference for its specs, pricing and benchmarks. For the same kind of work, use GPT 6 Luna.
See GPT 6 LunaUse it for large codebases, large document sets, and cost-sensitive long-context planning where Sonnet-class pricing is unnecessary. GLM-5.1 remains available for compatibility, but new Z.AI routes should start on GLM-5.2 unless a workflow has been tuned specifically against 5.1.
What is GLM-5.2?
June 2026
The route is Anthropic-compatible, so Claude-style agents can keep the same runtime interface. Existing GLM-5.1 agents do not need to migrate immediately, but new Z.AI-backed agents should prefer GLM-5.2.
Specs at a glance
GLM-5.2 pricing
Historical provider list prices, per 1M tokens. These reference figures are not current Okou charges.
How GLM-5.2 behaves in practice
Observed behaviour from production agent runs.
Long-context work
GLM-5.2 is best used when the agent needs a large working set: repositories, documentation folders, design notes, or long research material.
Best agent tasks for GLM-5.2
Whole-repo review on a budget
Use GLM-5.2 when the agent needs to inspect a large codebase and produce concrete file-level recommendations without paying for a premium reasoning model on every pass.
When to skip GLM-5.2
Skip GLM-5.2 for workflows that depend on vision input, or when maximum English-language reasoning and tool routing quality matter more than context size and cost.
GLM-5.2 vs other models
GLM-5.2 vs Kimi K2.7 Code
Both sit in cost-saving territory. Kimi is the Moonshot default and a strong code-focused alternative; GLM-5.2 is the preferred Z.AI long-context route.
GLM-5.2 vs Claude Sonnet 4.6
Sonnet 4.6 remains the stronger default for premium tool-routing quality. GLM-5.2 is cheaper and better suited when context size dominates.
Frequently asked questions
Is GLM-5.2 the default for direct Z.AI API keys?
Yes. The Z.AI provider defaults to glm-5.2 while keeping glm-5.1 available.
Availability of GLM-5.2 on Okou
GLM-5.2 is no longer offered on Okou. See GPT 6 Luna for a currently supported alternative. This page retains historical model information, not current Okou pricing.
