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Models/GLM 5.3 FlashX
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z-ai/glm-5.3-flashx

GLM 5.3 FlashX is Z.ai’s AI model, released Sep 18, 2026. It costs $0.37/M input and $1.25/M output tokens, and handles a 1M-token context window.

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.

Context
1M
Input
$0.37 / 1M
Output
$1.25 / 1M
Released
Sep 18, 2026
Modalities
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Benchmarks

Scores on standardized evaluations. Higher is better — and rank shows where GLM 5.3 FlashX lands among all models tracked on Model Beat.

No standardized benchmark scores from Epoch AI yet — common for very recent, image, or niche models. Scores appear here once published.

In the news

1

Changelog

1
  • GLM 5.3 FlashX (Z.ai) added to the tracker: $0.37/$1.25 per 1M, 1M context.tracked · Sep 19, 2026

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Frequently asked questions

What is 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.

Who created GLM 5.3 FlashX?

GLM 5.3 FlashX is an AI model developed by Z.ai, released Sep 18, 2026.

How much does GLM 5.3 FlashX cost?

GLM 5.3 FlashX's list price from Z.ai is $0.37 per million input tokens and $1.25 per million output tokens.

What is GLM 5.3 FlashX's context window?

GLM 5.3 FlashX supports a context window of up to 1M tokens.

Benchmark data from Epoch AI (CC BY) and Artificial Analysis; pricing, specs & descriptions from OpenRouter. Data updated Sep 21, 2026.