Model board / GLM-5.3-Flash

GLM-5.3-Flash

latest Z.ai · GLM

Verified 2026-10-15 against the pages listed below. Prices are USD per 1M tokens, list rate — no committed-use, enterprise or volume discount.

Input
$0.15
Cached input
$0.03
Cache write
—
Output
$0.5
Context window
1,000,000
Max output
128,000
Weights
open
Caching
automatic

list rate. The launch promotion that halved it to $0.075/$0.015/$0.25 ended on 2026-09-09 as scheduled, and is no longer on the pricing page

stated on the GLM-5.3-Flash guide

cached input at 20% of base

Licence: MIT — stated in the Hugging Face LICENSE

Watch out

The launch promotion has ended, so $0.15/$0.50 is now the rate you are billed. Unlike GLM-5.3, its weights are plain MIT on Hugging Face — and it takes images and video, which GLM-5.3 does not. Thinking cannot be switched off

What we would use it for

The cheapest tier of the GLM-5.3 generation

What this has cost, week by week

Output price at each refresh since 2026-08-27. A vendor change is the provider changing its price. Our correction means this board changed what it prints and the provider's charge did not move — the two are never merged, because publishing the second as the first would be a price rise that never happened.

08-27 $0.5→09-03 $0.5→09-10 $0.5→09-17 $0.5→09-24 $0.5→10-01 $0.5→10-08 $0.5→10-15 $0.5
newly stated2026-09-24 · window, max_output, weights — 1M / 128K from Z.ai's GLM-5.3-Flash guide, and open MIT weights from the Hugging Face card — all three newly cited. Previously null and unverified.

Where these numbers came from

No number on this page was written that was not read from one of those pages on 2026-10-15. If one is wrong, send us the source URL and it is corrected in the next weekly refresh, with a changelog line saying what was wrong — contact@naderu.com.

Discussed in Naderu Weekly

The rest of the board

This row sits alongside 69 others on the model board, refreshed every week. The same data as JSON, and the terms for using it, are at /board-data.