GLM-5.3 Flash (US)

Optional online service

Z.ai · Aug 2026 · Hosted in the United States by Fireworks AI

Z.ai's fast, low-cost model with images, served from US data centers by Fireworks.

Context
1M tokens
Input
$0.29/M
Output
$0.97/M
Vision
Reads images
chat

Pricing

Input / M tokensOutput / M tokensCached input / MPer-request fee
$0.29$0.97$0.06None

An optional paid service: sign in with your Flowsta Identity to use it. Billed by actual tokens used, against your allowance and metered rates - the app shows the cost of every conversation as you go.

Privacy

Online models see only what you choose to send. You sign in with your Flowsta Identity - created by you, kept in your own Flowsta Vault, 24 words as the key - so there is no provider account behind your requests: they reach the provider with no identity attached. Your Own AI keeps your conversation history, memory, and documents on your device, and attachments only go online with your explicit consent - the app asks. License: MIT (open weights, served via API) (terms).

Frequently asked questions

How do I use GLM-5.3 Flash (US) without a Z.ai account?
Through Your Own AI: online models are an optional paid service you sign in to with your Flowsta Identity - one identity, created and kept by you, covers every model in the catalog. You pay per use; no provider subscriptions, no separate keys.
What does GLM-5.3 Flash (US) cost?
$0.29 per million input tokens and $0.97 per million output tokens, with cached input at $0.06. The cost explorer on this page turns that into a monthly figure for your usage.
How much context does GLM-5.3 Flash (US) support?
1M tokens of context.
Is my data used to train GLM-5.3 Flash (US)?
You sign in with a Flowsta Identity you hold yourself, so there is no provider profile to train against: requests reach the provider with no account or identifier attached, and Your Own AI keeps your history on your device. Attachments only go online with your explicit consent.
Is GLM-5.3 Flash (US) open source?
The weights are published under the MIT license - this catalog serves it as a hosted API for speed, and you can run open models like it locally with Your Own AI's offline catalog.

Use GLM-5.3 Flash (US) the private way

Download the app, then sign in with a Flowsta Identity - yours to create, yours to keep - to add the online service. Pay per use, everything local stays local. No one in control but you.