---
format: "aidr-story-markdown/v1"
id: "b787215ee77fad531f753734e2660a97c3009161e952a74c811c070004614c2d"
canonical_url: "https://aidr.today/b787215e?lang=en"
title: "Z AI GLM-5.3 Max Ranks 2nd Among Open Code Models, Beating Gemini 3.7 Flash"
lang: "en"
requested_lang: "en"
available_langs: ["en","vi"]
translation_fallback: null
fallback_fields: []
published_at: "2026-08-21T05:44:23.000Z"
category: "Models"
topics: ["llm","coding","open-source","benchmark"]
source_urls: ["https://x.com/arena/status/2090581559262798055","https://x.com/Zai_org/status/2090629887216525530","https://x.com/scaling01/status/2090436220488745457"]
summary: "Z AI's latest model update focuses on top tier coding and agentic capabilities achieved through post training on a 743B base model. The GLM-5.3 Max variant scored 1,597 points in the Code Arena: WebDev benchmark, placing it eighth overall and second among open weight options. At $3.65 per million tokens, the model outperforms proprietary variants including Deepseek-v4-flash-high and Gemini 3.7 Flash-high. The GLM-5.3 API is currently available via first party and partner gateways for tasks involving defensive cybersecurity and long horizon agentic work. Z AI expects to release the model weights shortly to support the open ecosystem, shifting the performance and cost balance for developers."
---

# Z AI GLM\-5\.3 Max Ranks 2nd Among Open Code Models, Beating Gemini 3\.7 Flash

> [Open the canonical story](<https://aidr.today/b787215e?lang=en>)

**Published:** 2026-08-21T05:44:23.000Z
**Category:** Models
**Topics:** llm, coding, open\-source, benchmark

## Summary

Z AI's latest model update focuses on top tier coding and agentic capabilities achieved through post training on a 743B base model\. The GLM\-5\.3 Max variant scored 1,597 points in the Code Arena: WebDev benchmark, placing it eighth overall and second among open weight options\. At $3\.65 per million tokens, the model outperforms proprietary variants including Deepseek\-v4\-flash\-high and Gemini 3\.7 Flash\-high\. The GLM\-5\.3 API is currently available via first party and partner gateways for tasks involving defensive cybersecurity and long horizon agentic work\. Z AI expects to release the model weights shortly to support the open ecosystem, shifting the performance and cost balance for developers\.

## Sources

- [Story source](<https://x.com/arena/status/2090581559262798055>)
- [Supporting source](<https://x.com/Zai_org/status/2090629887216525530>)
- [Supporting source](<https://x.com/scaling01/status/2090436220488745457>)