---
title: "Zhipu AI releases GLM-5.3, claims top open-weights coding model"
url: https://www.parallelquant.com/posts/zhipu-ai-releases-glm-5-3-claims-top-open-weights-coding-model-166eb7
source_name: "The Decoder"
source_url: https://the-decoder.com/zhipu-ai-releases-glm-5-3-claims-its-the-strongest-open-weights-coding-model/
published: 2026-08-14T10:21:34.000Z
topics: ["open source"]
publisher: "Parallel Quant"
---

# Zhipu AI releases GLM-5.3, claims top open-weights coding model

*2026-08-14 · Source: [The Decoder](https://the-decoder.com/zhipu-ai-releases-glm-5-3-claims-its-the-strongest-open-weights-coding-model/)*

Zhipu AI released GLM-5.3, which it claims is the strongest open-weights coding model, citing a 50% benchmark improvement over its predecessor from post-training alone, according to The Decoder. The company says the model helped security teams find 2,436 vulnerabilities across 269 projects; weights are set to go open source in two weeks.

**Why it matters:** This continues the rapid pace of Chinese open-weight model releases, following DeepSeek V4 Pro and Ling 3.0 Flash, that are increasingly competitive on coding and security tasks, reinforcing the pricing and competitive pressure on US labs referenced in today's OpenAI/Anthropic price-war story.

**Topics:** open source

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Read the original: https://the-decoder.com/zhipu-ai-releases-glm-5-3-claims-its-the-strongest-open-weights-coding-model/
Canonical: https://www.parallelquant.com/posts/zhipu-ai-releases-glm-5-3-claims-top-open-weights-coding-model-166eb7
Published by Parallel Quant — https://www.parallelquant.com