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400•08/26/2026, 18:15•2 min read

Introducing the New GLM-5.3 Flash Model

Introducing the New GLM-5.3 Flash Model - 1
Introducing the New GLM-5.3 Flash Model - 2
Executive TL;DR30s read

Zhipu has officially launched the GLM-5.3 Flash model, showcasing impressive performance results.

Introducing the New GLM-5.3 Flash Model

Zhipu has officially introduced and launched the GLM-5.3 Flash. This model has confirmed its identity as the anonymous Ox Alpha, which previously appeared in OpenCode and OpenRouter.

The official release is more powerful and noticeably more stable.

According to Z.ai, GLM-5.3 Flash scores 84.3 in Terminal-Bench 2.1, nearly catching up to Claude Opus 4.8 with a score of 85.0.

It outperforms the significantly larger GLM-5.2 in all six published tests and costs about 10 times less to use.

  • Input — $0.15 per million tokens.
  • Output — $0.50.
  • Cached input — $0.03.

Open weights, MIT license, built-in multimodality, and context for 1 million tokens.

Why it matters

Analysis

This model represents a significant advancement in artificial intelligence technology, demonstrating high performance at an accessible price. It could serve as a foundation for new applications across various fields.

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