---
description: GLM-5.3 Flash is now available on Workers AI, a 320B MoE model with vision, reasoning, and function calling.
title: Z.ai GLM-5.3 Flash now available on Workers AI
image: https://developers.cloudflare.com/changelog/post/2026-08-26-glm-5.3-flash-workers-ai/og.png?v=5fac8ad624908f6f
---

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August 26, 2026

## Z.ai GLM-5.3 Flash now available on Workers AI

[Workers AI](https://developers.cloudflare.com/workers-ai/)

Copy as Markdown| [View as Markdown](https://developers.cloudflare.com/changelog/post/2026-08-26-glm-5.3-flash-workers-ai/index.md)| [Agent setup](https://developers.cloudflare.com/agent-setup/)

[`@cf/zai-org/glm-5.3-flash`](https://developers.cloudflare.com/workers-ai/models/glm-5.3-flash/) is now available on Workers AI. It is the first natively multimodal model in the GLM-5 series, built on a Mixture-of-Experts architecture with 320B total parameters and 18B active per token.

GLM-5.3 Flash is the first GLM-family model on Workers AI to support multimodal inputs. It outperforms GLM-5.2 across benchmarks and real-world workloads at a lower price, while approaching Claude Opus 4.8 on coding and agentic benchmarks.

GLM-5.3 Flash requires the [Workers Paid plan](https://developers.cloudflare.com/workers/platform/pricing/#workers) or prepaid [AI Gateway credits](https://developers.cloudflare.com/ai-gateway/features/unified-billing/).

Use GLM-5.3 Flash through the [Workers AI binding](https://developers.cloudflare.com/workers-ai/configuration/bindings/) (`env.AI.run()`), the REST API, the [OpenAI-compatible endpoint](https://developers.cloudflare.com/workers-ai/configuration/open-ai-compatibility/), or [AI Gateway](https://developers.cloudflare.com/ai-gateway/).

For more information, refer to the [GLM-5.3 Flash model page](https://developers.cloudflare.com/workers-ai/models/glm-5.3-flash/) and [pricing](https://developers.cloudflare.com/workers-ai/platform/pricing/).

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