GLM-5.3-Prime
A faster version of Zhipu's GLM-5.3 model that writes text about one and a half to two times quicker, offered through online services.
This came out before trckr began following OpenRouter, so it was added on Nov 6 without an alert. Its release date comes from OpenRouter.
Key facts
- Released
- Sep 23, 2026
- What it does
- Text and chat: Writes, answers questions and holds a conversation.Thinks first: Can reason step by step before it answers: slower, but better at maths, code and tricky questions.
Can I use it?
In an app
No app mentioned so far.
For developers
Developers can use it now through an API: How developers plug a model into their own apps and pay per use. A model that's "in the API" can be used by programmers, even if it isn't in a chat app yet..
Download
Not downloadable: it runs on the maker's own servers.
Price and limits
What developers pay to use it through the API: How developers plug a model into their own apps and pay per use. A model that's "in the API" can be used by programmers, even if it isn't in a chat app yet., per million Tokens: The small chunks of text a model reads and writes, about three-quarters of a word each. Prices and limits are counted in tokens. sent (input) or written back (output), and how much it can take in at once.
- Input
- $2.80
- per million tokensCached: $0.56
- Output
- $8.80
- per million tokens
- Context window: How much a model can keep in mind at once: your question, any files you share and its own replies. Measured in tokens; 1,000 tokens is about 750 words.
- 1M tokens
- about 750,000 words
View moreView less
- Longest answer
- 131K tokens (about 98,000 words)
From OpenRouter, checked .
How it scores
Not in the independent rankings yet. New models usually show up within a few weeks, and this page updates when they do.
Compare GLM-5.3-Prime with
It came out 5 days after GLM-5.3-FlashX, the lab's previous model.
The details
A high-speed variant of Z.ai's GLM-5.3 with 1.5 to 2 times the output throughput and a A 1M-token context window: It can keep about 750,000 words, or 2,500 book pages in mind at once: the question, any files you share, and its own replies., text only.
Model ID: The exact name developers type to use a model, like gpt-5-mini. New IDs often show up in a lab's systems before the official announcement, which is how trckr spots many releases early.
z-ai/glm-5.3-primeTimeline
/OpenRouterFirst signal
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