Zhipu GLM
GLM-5.2 flagship + Coding Plan — open-source frontier, 1M context, LMArena #1 OSS
Why we recommend Zhipu GLM
Why we recommend Zhipu
Zhipu AI is one of China's earliest serious LLM labs, and the GLM family has a strong reputation in the Chinese open-source community. Their 2026 flagship GLM-5.2 ranks #1 among open-source models and #2 globally on the LMArena code leaderboard (behind only Claude Fable 5) — firmly in the frontier tier.
The Coding Plan is Zhipu's core subscription product for developers. Unlike token-based pricing, it uses a credit-quota model with two throttle dimensions (5-hour and weekly caps), giving individual developers and teams predictable access to the flagship models within a controlled budget:
| Tier | Monthly (quarterly 20% / annual 30% off) | Quota | Best for |
|---|---|---|---|
| Lite | ¥94.4 / month (¥118 list) | 10,000 credits/week | Small repos, light iteration |
| Pro (most popular) | ¥430.4 / month (¥538 list) | 6× Lite quota | Mid-size repos, daily development |
| Max | ¥862.4 / month (¥1,078 list) | 14× Lite quota | Power users, large-repo deep work |
All three tiers include access to GLM-5.2, GLM-5-Turbo, and GLM-4.7, plus compatibility with 20+ coding tools including ZCode and Claude Code. Pro unlocks curated MCP tool integration; Max gets first-wave access and priority resources during peak hours.
In practice, Zhipu's bigmodel.cn console is the most reliably reachable AI service from inside China, and new signups get 20 million free Tokens to try GLM-5.2. The API is OpenAI-compatible — existing code can switch by changing a single baseURL.
If your project needs frontier Coding capability + a healthy open-source ecosystem + stable domestic service + predictable subscription budgeting, Zhipu's Coding Plan is the strongest 2026 pick.