zai

GLM 5.3 FlashX

Input / 1M: $0.3885
Output / 1M: $1.3125
Context: 1,000,000 tokens
Catalog: Gateway catalog

About this model

GLM-5.3-FlashX is the high-speed serving option for Z.ai’s native multimodal coding model, featuring 320B total parameters, 18B activated parameters, and a 1M-token context window. Its efficient hybrid attention architecture supports visual coding, tool use, and end-to-end professional workflows across code, browsers, documents, and graphical interfaces.

text inputimage inputtext outputlanguage

Use with MiniRouter View docs

Use an endpoint supported by this model.

Get a key for this setup →

1const response = await fetch('https://api.minirouter.sh/v1/chat/completions', {2  method: 'POST',3  headers: {4    Authorization: `Bearer ${process.env.MINIROUTER_KEY}`,5    'Content-Type': 'application/json',6  },7  body: JSON.stringify({8    model: 'zai/glm-5.3-flashx',9    messages: [{ role: 'user', content: 'Why is the sky blue?' }],10    max_tokens: 1024,11  }),12})13 14const data = await response.json()15console.log(data.choices[0].message.content)

Read docs →

Overview

Model type: language
Context window: 1,000,000
Maximum output: 131,072
Input / 1M tokens: $0.3885
Output / 1M tokens: $1.3125
Released: 2026-09-18

Prices include the MiniRouter fee. Compatibility snapshot: 2026-08-06. Input: text, image. Output: text.

Endpoints

/v1/chat/completions/v1/messages/v1/responses

Platform-funded routing only. Caller BYOK credentials and OIDC-based upstream authentication are intentionally excluded; authenticate with a MiniRouter bearer key.

Captured parameters: max_tokens, temperature, stop, tools, tool_choice, reasoning, include_reasoning.

Structured output: Not enforced; a requested format is dropped and the answer is plain text. How it works

API

Use the setup panel above to switch between Chat Completions, Messages, and client configurations. Every snippet keeps the model ID unchanged.

Base URLhttps://api.minirouter.sh/v1

Model IDzai/glm-5.3-flashx

Providers

MiniRouter selects from the configured routes below. Priority is the catalog order, not a latency or availability score.

Provider	Priority	Input / 1M	Output / 1M	Parameters	Access
vercel	1	$0.3885	$1.3125	max_tokens, temperature, stop, tools, tool_choice, reasoning, include_reasoning	MiniRouter balance