GLM-5.3-FlashX Legal

glm-5.3-flashx-legal

GLM-5.3-FlashX-Legal (GLM-Legal) is Z.ai's legal-domain variant of GLM-5.3-FlashX, a native multimodal model that accepts text, image, and video input and produces text. It adds legal-domain mid-training and post-training with reinforcement learning in task environments modeled on real legal workflows, targeting document understanding, legal reasoning, and multi-step task execution such as legal research, contract review, cross-document consistency checks, and drafting or revising legal documents.

Context Window

1M tokens

Maximum Output

131.1K tokens

Release Date

Nov 2, 2026

Modalities

GLM-5.3-FlashX Legal Pricing

Input PriceOutput PriceCache Read
$0.37/M$1.25/M$0.075/M

GLM-5.3-FlashX Legal API Capabilities

Reasoning

Supported

Tool calling

Supported

Temperature parameter

Supported

Attachments

Supported

Knowledge Base

—

Endpoint Protocols

Completions API

GLM-5.3-FlashX Legal Model Highlights

The defining strengths of this legal-domain model.

Legal Domain Reasoning

Optimized for understanding legal materials, reasoning about issues and preparing practical deliverables.

Long Legal Context

A long context window supports analysis of extensive contracts and case materials within model and provider limits.

Multimodal Material Understanding

Can work with text and supported visual materials; available input formats depend on the service route.

GLM-5.3-FlashX Legal Use Cases

Practical legal workloads suited to the model.

Contract Review

Identify obligations, inconsistencies and clauses that warrant professional review.

Case Material Analysis

Summarize supplied evidence and organize facts and disputed issues for further investigation.

Legal Drafting

Prepare draft clauses and legal documents based on supplied instructions for professional review.

How to Use GLM-5.3-FlashX Legal via the TokenHub API

Create API key
import OpenAI from "openai"

const client = new OpenAI({
  apiKey: process.env.TOKENHUB_API_KEY,
  baseURL: "https://us-api.tokenhub.com/v1",
})

const result = await client.chat.completions.create({})
console.log(result.choices[0]?.message?.content)

GLM-5.3-FlashX Legal Media and Demos

Public posts and videos about the legal variant and the related GLM-5.3-Flash family.

X (Twitter)

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Reddit

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YouTube

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GLM-5.3-FlashX Legal FAQs

Useful questions about this legal-domain model.

What is GLM-5.3-FlashX Legal?+

It is a legal-domain variant of GLM-5.3-FlashX, optimized for legal materials and workflows.

What is the model best suited for?+

It can assist with contract review, evidence analysis and drafting legal documents.

Can it replace a legal professional?+

No. A qualified professional should verify the facts, cited authorities and conclusions before relying on them.

Can it analyze images or video?+

The model is listed with image and video input, but supported formats and attachments depend on the provider and TokenHub route.

How do I use it through TokenHub?+

If available to your account, select the model ID in a TokenHub API request and check the endpoint and current pricing.

Should I choose this model or the general FlashX model?+

Consider this variant for legal workflows, and compare both models on representative tasks, cost and response time.

Ready to use GLM-5.3-FlashX Legal?

Use one API key to access GLM-5.3-FlashX Legal and more AI models through TokenHub.

Create API key