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

Publisher-attributed story with a reviewed brief or permitted publisher paragraph. The original publisher is responsible for the linked reporting.

- Publisher: Cloudflare Developers
- Category: AI
- Original publication time: 2026-08-28T00:00:00Z
- First observed by NexusTechWire: 2026-10-01T15:54:34Z
- Original source: https://developers.cloudflare.com/changelog/post/2026-08-28-glm-5.3-workers-ai/
- NexusTechWire record: https://nexustechwire.com/news/news-e72a92892f5cdfb51c90

## From the publisher

@cf/zai-org/glm-5.3 is now available on Workers AI. It is Z.ai's flagship agentic coding model, built for long-running, tool-driven development workflows rather than single-turn chat. GLM-5.3 uses the same base model as GLM-5.2, with every gain coming from post-training. The results are substantial on coding and agentic benchmarks: Z.ai reports ↗︎ a 50% improvement over GLM-5.2 on its in-house Z.ai Code Bench, and calls GLM-5.3 the most capable open-weights model for coding. On public benchmarks, it scores 88.2 on Terminal Bench 2.1 (up from 81.0), 28.3 on Terminal Bench 3.0 — open-source state of the art, up from 4.6 — 66.9 on DeepSWE (up from 46.2), 78.1 on FrontierSWE (up from 67.5), and 42.5 on SWE-Marathon (up from 19.4).

Source license: [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/). Publisher excerpt shortened and converted to plain text. Original source license applies.

Read the full original: [Cloudflare Developers](https://developers.cloudflare.com/changelog/post/2026-08-28-glm-5.3-workers-ai/)

This record does not reproduce the complete article or represent independent confirmation of every source claim.