Z.ai's anticipated next flagship language model. As of November 2026 it is unreleased — in post-training, with specs known only from leaks and a lecture by co-founder Jie Tang. The shipping flagship remains GLM-5.3.
Last verified · 2026-11-06 · by Moe Ameen
GLM-5.5 is the next flagship language model expected from Z.ai — the Chinese lab formerly known as Zhipu AI — and, as of early November 2026, it is not released. There is no official model card, no published weights, no API endpoint, and no pricing. What exists is a trail of leaks: independent trackers reported the model was deep in post-training by late October, and in early November coverage surfaced of a lecture at Tsinghua University by Jie Tang, a Z.ai co-founder and Tsinghua professor, describing the pretraining pipeline behind an upcoming GLM model.
The reported details, which Z.ai has not confirmed, describe an in-house data operation: a set of internal data engines building pretraining data across web pages, documents, books, code, video, and audio at very large scale, with one circulated figure putting the crawled web corpus on the order of a trillion pages. Internal checkpoint sizes of 32B, 122B, and 256B parameters have been referenced; observers disagree on whether those are standalone models or components to be merged into a larger system rumored to exceed a trillion total parameters. A "GLM-5.5 Flash" listing has also surfaced on at least one developer platform, though reported as a placeholder with unknown specs and no confirmed launch — at most a hint Z.ai could repeat the flash/non-flash split it used for GLM-5.3, not a confirmed variant lineup.
Context helps calibrate those rumors. Z.ai's officially disclosed lineage showed GLM-5 scaling from GLM-4.5's 355B parameters (32B active) to 744B (40B active), with pretraining data growing from 23 trillion to 28.5 trillion tokens. The current shipping flagship, [GLM-5.3](/ai-tools/glm-5-3), is a coding-and-agent model built on the GLM-5.2 base with a 1-million-token context; its cheaper sibling, [GLM-5.3-Flash](/ai-tools/glm-5-3-flash), is natively multimodal. Every GLM release so far has published MIT-licensed open weights, so GLM-5.5 is widely expected to do the same — but until a model card lands, treat the parameter count, context window, license, and release date as unverified. What is safe to assume from the family: GLM-5.5 will be a text-and-code model tuned for coding, reasoning, and long-horizon agent work, not a content or media generator.
The reason to watch GLM-5.5 is not that it will write a better caption — it is that the GLM line keeps getting stronger at the one thing a drafting front end should do well: reason across a very large input and run long, multi-step work. Hand a future GLM-5.5 a full webinar transcript, a quarter of support tickets, or a sprawling strategy doc and it should come back with a coherent slate of angles, scripts, and hooks, and — if you run it as an agent — the automation to keep pulling fresh source material in. That is a genuinely useful top of the funnel. It is also where it stops: no face, no video, no carousel, no schedule, no published post. [Kompozy](/) is built to take exactly that handoff.
The concrete workflow is model-agnostic by design, which is the point. Today you run that reasoning step on [GLM-5.3](/ai-tools/glm-5-3) or [GLM-5.3-Flash](/ai-tools/glm-5-3-flash); when GLM-5.5 ships, you swap the key and nothing else changes. Drop the model's strongest script into Kompozy as a source and it fans that one input into finished assets — a captioned [Persona Short](/glossary/persona-shorts) with a face-locked HeyGen avatar, a brand-exact [Carousel](/glossary/hyperframes), quote graphics, photo posts, a blog article, and an email newsletter — each rewritten under a [Persona Brief](/glossary/persona-brief) so a batch sounds like one brand instead of raw model output. Then [Autopilot](/glossary/autopilot) schedules and publishes the set across the eight social platforms plus blog and email, every asset clearing a per-post review gate first. Because the Founding tier lets you bring your own provider key, a cheaper, more capable GLM-5.5 just becomes a lower-cost drafting engine behind the same finishing-and-distribution layer.
No. As of early November 2026, Z.ai has not released GLM-5.5 — there is no model card, no weights, no API, and no pricing. Details circulating come from post-training trackers and a reported Tsinghua lecture by co-founder Jie Tang. The shipping flagship is GLM-5.3, with GLM-5.3-Flash as the cheaper multimodal tier.
Unconfirmed. Leaks reference internal checkpoints of 32B, 122B, and 256B parameters and a rumored system over a trillion total parameters, with the context window expected to carry over the GLM family's large window. Z.ai has published none of this, so treat every figure as a leak until an official spec lands.
Almost certainly not. Every GLM model to date is a text-in, text-out engine tuned for coding, reasoning, and agents — it produces text and code, not images, video, or audio. To turn a GLM script into visual, published content you pair it with a generation-and-publishing engine like Kompozy.
Draft the script in the GLM model, then bring it into Kompozy as a source. Kompozy generates a full set of formats from that one input — persona/avatar video, carousels, quote graphics, photo posts, a blog, and a newsletter — holds a consistent face and voice across them, and schedules and publishes across the eight social platforms plus blog and email. On the Founding tier you can bring your own GLM key.