# Z.ai — GLM-5.3 > AI lab announcements, news reports and podcasts. forck.live follows what companies announce about their own products. Press may corroborate an official story; it never leads and never appears as an item of its own. A missing date stays missing. A title is the publisher's words — where a company does not publish in English, an English rendering is listed separately as `Title in English` and named as this site's translation, never as theirs. This file is the record of one model version: what the model registry states about it, Z.ai's launch post, the first-party posts this record holds about it, the outlets that reported on those posts, and other companies' announcements that it runs on their platforms. A model ranks nothing here and nothing is composed: each date names whose it is, and a field nothing states is `not stated` rather than missing. - This model's page: https://forck.live/models/glm-5-3 - Z.ai's page: https://forck.live/company/z-ai - Every model: https://forck.live/models - Catalogue: https://forck.live/llms.txt ## Model - Name: GLM-5.3 - Company: Z.ai (z.ai) - Launch post: GLM-5.3 — https://forck.live/items/4446-glm-5-3 - Announced: 2026-08-18 - Launch source: https://docs.z.ai/release-notes/new-released#2026-08-18 - Launch chosen by: a person, pinned in the model registry - Released (per models.dev): 2026-08-14 - Listed (per OpenRouter): 2026-08-18 - Open weights: yes - Posts about it: 2 - Outlets named under its posts: 1 - Variant: GLM 5.3 Prime — https://forck.live/models/glm-5-3-prime - Variant: GLM 5.3 FlashX — https://forck.live/models/glm-5-3-flashx - Variant: GLM-5.3-Flash — https://forck.live/models/glm-5-3-flash - OpenRouter id: z-ai/glm-5.3 — https://openrouter.ai/z-ai/glm-5.3 ## Posts about it _Z.ai's own posts whose title names GLM-5.3, and its launch post, in the record's order: dated newest first, undated last. The record reads the newest 50 first-party posts mentioning the model, every company's together, so a model mentioned more often than that lists the newest of them._ Every entry is one first-party announcement, and carries the same eight fields in this order before any others: Company · Announced · Category · Coverage · Announcement · Group · Source · Record `Source` is the company's own page the announcement was traced to and `Record` is this site's page for it. Both are safe to cite. `Coverage` is a number of outlets, or `not counted` — which means this record reached no count of its own, never that nobody wrote about it. `Category` is this tracker's own analysis, and is authoritative wherever it is stated. `not stated` means either that nothing has analysed the post yet or that the analysis placed it outside this taxonomy; neither is a verdict about the announcement. `Announcement` is whether the post is news of something the company did, rather than a how-to, a customer story, a changelog listing or a staffing note. `Group` is which of this record's groups the entry falls in, carried on the entry itself so it holds where the groups are headings and where they are not. One of: `models`, `covered`, `announcements`, `routine`. Anything after `Record` is held detail that only some announcements carry. ### Z.ai — GLM-5.3 is now available on Amazon Bedrock. - Company: Z.ai (z.ai) - Announced: 2026-10-06T00:49:38+00:00 - Category: availability-change - Coverage: not counted - Announcement: yes - Group: announcements - Source: https://x.com/Zai_org/status/2107272032073437185 - Record: https://forck.live/items/19958-glm-5-3-is-now-available-on-amazon-bedrock Z.ai has made its GLM-5.3 model available on Amazon Bedrock, bringing coding and agentic capabilities to enterprise customers. The model is now accessible through the Bedrock platform, allowing businesses to integrate its features into their workflows. Z.ai says the model offers powerful coding and agentic capabilities for enterprise use. ### Z.ai — GLM-5.3 - Company: Z.ai (z.ai) - Announced: 2026-08-18 - Category: model-update - Coverage: not counted - Announcement: yes - Group: models - Source: https://docs.z.ai/release-notes/new-released#2026-08-18 - Record: https://forck.live/items/4446-glm-5-3 - Subject: GLM Z.ai releases GLM-5.3, an update to its model series, with improved coding capabilities (50% gain over GLM-5.2 on Z.ai Code Bench) and emergent cybersecurity capabilities matching Mythos 5 in white-box code review and vulnerability discovery (identified 2,436 vulnerabilities on real-world targets). ## Who reported on it _Outlets this record can name and link, under the first-party post each one covered. Their number is `Outlets named under its posts` above, and the rows are not totalled again. A post's own `Coverage` can be higher: it counts outlets the signal saw that this record cannot name and link._ ### On: GLM-5.3 Record: https://forck.live/items/4446-glm-5-3 - TechNode — Z.ai launches GLM-5.3 with claimed 50% gain on coding benchmark (2026-08-17T05:58:14+00:00): https://technode.com/2026/08/17/z-ai-launches-glm-5-3-with-claimed-50-gain-on-coding-benchmark/ ## Where it runs _Other companies' own announcements naming GLM-5.3 and Z.ai — each is that company's post, not Z.ai's._ ### Amazon — Introducing GLM 5.3 on Amazon Bedrock - Company: Amazon (amazon.com) - Announced: 2026-10-05T23:25:17+00:00 - Category: model-update - Coverage: not counted - Announcement: yes - Group: models - Source: https://aws.amazon.com/blogs/machine-learning/introducing-glm-5-3-on-amazon-bedrock/ - Record: https://forck.live/items/16107-introducing-glm-5-3-on-amazon-bedrock - Subject: Bedrock / Nova Amazon announced that GLM 5.3, a 753B-parameter mixture-of-experts model from Z.ai (Zhipu AI), is now available on Amazon Bedrock. The model is optimized for coding and long-horizon agentic tasks, and Z.ai reports it shows notable cyber security capabilities. On Bedrock, it is accessible through fully managed APIs with cross-Region inference, prompt caching, and service tiers for eligible enterprise customers. ### Perplexity — GLM 5.3 - Company: Perplexity (perplexity.ai) - Announced: 2026-08-28T16:36:56+00:00 - Category: api-release - Coverage: not counted - Announcement: yes - Group: announcements - Source: https://docs.perplexity.ai/docs/resources/changelog#august-2026 - Record: https://forck.live/items/5056-glm-5-3 - Subject: Sonar The Agent API and Router API now support the perplexity/glm-5.3 model with specified pricing. --- Record: https://forck.live/models/glm-5-3 Catalogue: https://forck.live/llms.txt Current issue: https://forck.live/feed.md