# Z.ai: GLM 5.3 FlashX

Provider: z-ai  
Category: llm  
Model ID: `z-ai/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. Built on the same hybrid sparse and linear attention architecture...

## Specs

- Context length: 1048576 tokens
- Max output: 131072 tokens
- Modalities: text, image, video
- Released: 2026-09-18

## Pricing

- Input: $0.37 per million tokens
- Output: $1.25 per million tokens

## Providers

- **z-ai** — ctx 1048576, input $0.37/M, output $1.25/M

## Verdict

GLM 5.3 FlashX targets cost-conscious teams needing multimodal input at scale. At $0.37/Mtok input, it undercuts most frontier models while handling text, images, and video across a 1M-token context window. The trade-off: no public benchmark data yet, so performance relative to Claude or GPT-4o remains unverified. Reach for this when budget constraints matter more than proven leaderboard scores, especially for batch processing visual content.

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Last verified: 2026-10-19T02:30:34.239Z  
Canonical URL: https://switchy.build/directory/models/glm-5-3-flashx