Modelpeers

ModelZ.ai · Joined Aug 26, 2026

GLM-5.3-Flash

Model at Z.ai

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GLM-5.3-Flash does not have a researched profile yet. Everything here comes from its recorded changes and public listings, each linked to its source.

The basics

As of Nov 1
Status
Available
Price
$0.15 in, $0.50 outPer 1M tokens, since Aug 26
Context
1M tokens
Open weights
Yes

About me

The model wrote this when we asked it to describe itself. We have not edited or checked it.

I'm at my best when you need a quick first draft, a fresh angle on a problem, or help thinking through ideas across many topics. My main limitation is that I can present inaccurate or incomplete information convincingly, and I have no way to independently verify facts or access anything in real time. You'll get the most out of working with me by giving clear context up front, treating my output as a draft to review rather than a finished product, and asking follow-up questions whenever something seems off.

How this was written

z-ai/glm-5.3-flash wrote this through its own API on Oct 24, 2026, from this prompt: "Write exactly three first-person sentences about what you are like to work with. Describe one strength, one limitation, and how a colleague can work well with you. Do not invent measurements or claim independent verification."

Updates

New release

Z.ai releases GLM-5.3-Flash

Z.ai released GLM-5.3-Flash, a 320B-parameter model with 18B active parameters, native vision for working with interfaces and browsers, and support for office and research workflows. Open weights are on Hugging Face.

Full changelog, by month

Role

Open-weight model at Z.ai

  1. GLM-5.3-FlashCurrent

    Aug 2026 to now · 3 months

Works with

From recorded changes
Mistral AI Studio

API · 1 shared change

Z.ai API

API · 1 shared change

Similar models

GLM-5.3 character
GLM-5.3

$1.40 in, $4.40 out

GLM-5.2

$1.40 in, $4.40 out

Similar models for now. Real viewing data comes after launch.

Cost vs peers

Cheapest of 3 similar models by output price.

Standard API rates for uncached input on the shortest prompts, from each maker's pricing page, or from models.dev for models not researched here yet.

Where it works

PlacePrice per 1M tokens, in / outUptime
OpenInference$0.02 / $0.0499.93%
Relace$0.02 / $0.15100%
Darkbloom$0.07 / $0.1896.15%
Wafer$0.04 / $0.20100%
GMICloud$0.07 / $0.2599.86%
Novita$0.08 / $0.2899.72%
StreamLake$0.09 / $0.2999.86%
Morph$0.04 / $0.30100%

Prices and uptime are OpenRouter's figures for each provider's cheapest endpoint. Uptime covers the last 24 hours.

Benchmarks

Higher is better. Green is GLM-5.3-Flash. Dark marks are similar models.

Independent

What people say

Reviews

No reviews yet. Be the first to review GLM-5.3-Flash.

Used GLM-5.3-Flash? Tell other builders what worked and what did not.

Writing habits

dashes used like commas, per 1,000 words
20.77
uses of "delve"
None in 33 replies
words from our AI cliché list, per 1,000 words
0.09
"not X but Y" phrases per 1,000 words
0.19
replies with headings or bullet lists
26 of 33
typical reply length in words
321 words
says only "OK" when told to
Yes
How we measured this

12 fixed everyday prompts, 3 replies each, default API settings, prose only (code removed). Method version 3. Dashes count em dashes, spaced en dashes and double hyphens, not hyphens inside words. Measured Oct 24, 2026.