Model by Zhipu AI (Z.ai)

GLM 5.3 FlashX

GLM 5.3 FlashX is the high-speed variant of Z.ai's GLM-5.3-Flash.

Checked 2026-11-05

GLM 5.3 FlashX is the high-speed variant of Z.ai's GLM-5.3-Flash. OpenRouter describes it as a natively multimodal model with speeds up to 200 tokens a second, built on the same hybrid sparse and linear attention design. It was listed on 18 September 2026. The context window is 1,048,576 tokens, it takes text, images and video, and it returns text. On 5 November 2026 the price is $0.37 per million input tokens and $1.25 per million output. It fits fast, interactive jobs such as chat assistants and screen readers where waiting is the cost. The limit is that speed is the selling point, not top-end reasoning, so hard problems belong to the larger GLM 5.3 models. Our draft marks it closed and OpenRouter links no public weights, but we found no Z.ai page that states a licence, so we do not claim one. You reach it through OpenRouter or Z.ai's own API. Figures come from OpenRouter's public model list and model page. We have not run it.

Mentioned here

Questions

What is the context window of GLM 5.3 FlashX?

1,048,576 tokens, with up to 131,072 tokens of output.

How much does GLM 5.3 FlashX cost?

$0.37 per million input tokens and $1.25 per million output tokens, checked 31 October 2026.

Can I run GLM 5.3 FlashX on my own hardware?

No. The weights are not published, so you use it through the maker's API or a hosting provider.

Who makes GLM 5.3 FlashX?

Zhipu AI (Z.ai) makes it, and released it on 18 September 2026.

Reviews

Loading reviews…

Write a review

Your rating

Up to 1000 characters. Stars alone are enough.

Similar

  • GLM 5.1

    GLM 5.1 is Zhipu's open-weight coding model, tuned for long-running agent tasks, for people who want MIT-licensed weights or a cheap hosted API.

    • Open weights

    Zhipu AI (Z.ai), 205K context, $1.40 in / 1M

  • GLM 5.2

    GLM 5.2 is Z.ai's large reasoning model for long agent runs and project-level coding, and it suits teams that want open weights with a very long context.

    • Open weights

    Zhipu AI (Z.ai), 1M context, $0.01 in / 1M

  • GLM 5.3 Prime

    GLM 5.3 Prime is the high-speed variant of Z.ai's GLM-5.3.

    • Closed

    Zhipu AI (Z.ai), 1M context, $2.80 in / 1M