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GLM 5.3 FlashX

Z.ai · Reasoning · 1M context · released Sep 18, 2026 · checked 10h ago

Ways to buy 2

Way to buyIn / out per 1M
Z.ai API
The lab's own API · cached $0.09
$0.37 / $1.25List price
Z.ai
fp8 · cached $0.09
$0.37 / $1.25Same as list

USD per 1M tokens. Regions are separate routes.

Through a gateway

Your own numbers

100M input and 20M output tokens a month: $62.00 direct.

No published token fee: Martian Gateway, Portkey, TrueFoundry AI Gateway.

Related models

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Gemini 3.1 Flash Lite Preview
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Command A+
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About GLM 5.3 FlashX

GLM-5.3-FlashX is the high-speed variant of Z.ai's GLM-5.3-Flash, a native multimodal model delivering inference speeds of up to 200 tokens/s.

Takes text, image, video in and returns text. First listed Sep 19, 2026. Up to 131K output tokens. Blended price $0.59 per 1M tokens at 3 input to 1 output. Model id glm-5-3-flashx.

Price history

$0.3$1Sep 19, 2026Output $1.25Input $0.37

List price since Sep 19, 2026, from Internet Archive snapshots of the OpenRouter catalog, then daily reads.

Across fru.devCompany profile

Questions

How much does GLM 5.3 FlashX cost?

$0.37 per million input tokens and $1.25 per million output tokens, with cached input at $0.09.

What is the context window of GLM 5.3 FlashX?

1M tokens, with up to 131K tokens of output.

Where is GLM 5.3 FlashX cheapest?

Of 2 routes tracked, Z.ai is cheapest at $0.37 input and $1.25 output per million tokens.

List prices from providers' pages on the date shown; your contract may differ. Logos via logo.dev; trademarks belong to their owners.

Weekly: LLM API list prices that changed, Thursday mornings.