glm-5.3-flash

mit320B / 18B

GLM-5.3-Flash/GLM-5.3-FlashX is the first native multimodal model in the GLM-5 series, delivering stronger intelligence than GLM-5.2 at an exceptionally low cost.

Context
1M
Max output
128K
Input price
$0.04/1M tokens
Output price
$0.08/1M tokens

Capabilities

vision
tool call
structured output
reasoning
json mode
streaming
fine tuning
batch

Details

Model IDzai/glm-5.3-flash
Familyglm-5.3
Licensemit
Parameters320B / 18B
Status—
Input modalitiestext
Output modalitiestext
Architecture—
Knowledge cutoff—
Training data cutoff—
Release date—
Deprecation date—
Typechat
Reasoning tokens—
Max input—
Open weightYes
Prompt cachingSupported
Sourceofficial
Last updated

Tools

Function Callingfunction_calling
Call external functions and APIs

Pricing

Input
$0.04
↑33%$0.03
Output
$0.08
Cache write
—
Cache read
—
Batch in
—
Batch out
—
Price history · $/1M input
$0.07
$0.07
$0.04
Sep 1Sep 18Nov 11
DateInputOutputChange
Aug 31, 2026$0.07$0.25—
Sep 1, 2026639b255$0.07$0.24↑0.0%
Sep 11, 202617bcfbf$0.05$0.2↓29%
Sep 18, 20262ae168f$0.07$0.25↑40%
Sep 30, 20266e8bf55$0.03$0.25↓57%
Oct 1, 20268c801e2$0.04$0.25↑33%
Oct 7, 2026b61df6a$0.03$0.25↓25%
Oct 9, 202670614e7$0.04$0.25↑33%
Oct 16, 2026bcf2693$0.01$0.25↓75%
Oct 17, 202603ad82b$0.05$0.25↑400%
Oct 18, 202663ba2aa$0.07$0.25↑40%
Oct 20, 202642a9895$0.07$0.2↑0.0%
Oct 21, 20264e8b6af$0.06$0.2↓14%
Oct 22, 2026f054294$0.07$0.2↑17%
Oct 29, 2026b2f45bf$0.04$0.08↓43%
Oct 29, 20262f25bc2$0.04$0.07↑0.0%
Oct 31, 2026a00e542$0.02$0.11↓50%
Nov 1, 202633ec368$0.01$0.13↓50%
Nov 2, 2026f5b7a54$0.03$0.09↑200%
Nov 4, 2026d50edf6$0.03$0.1↑0.0%
Nov 5, 2026161da7f$0.03$0.09↑0.0%
Nov 8, 20269ff1882$0.03$0.08↑0.0%
Nov 11, 20262a8a794$0.04$0.08↑33%

Input is ↓43% since Aug 31, 2026, from $0.07 to $0.04 per 1M tokens.

Family Comparison: glm-5.3

ModelContextMax outPricing
glm-5.3-flash1M128K$0.04$0.08
glm-5.31M128K$0.07$1.4
glm-5.3-flashx-legal1M128K$0.37$1.25
glm-5.3-flashx1M128K$0.37$1.25
glm-5.3-promo-501M—$0.7$2.2
glm-5.3-fast1M—$2.1$6.6

API

GET/v1/models/vercel/zai/glm-5.3-flash