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Z.ai: GLM 5.3 FlashX Legal API

Zhipu AI·Vision

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...

1.0M Context 131.1K out 3 req/24h $0.00 24h volume
Input
Text Image Video
Output
Text

Pricing

Cheapest live price, per 1 million tokens.

Input / 1M tokens

$0.27825% off

$0.370 OpenRouter

Output / 1M tokens

$0.93825% off

$1.25 OpenRouter

Cache read / 1M

$0.056

Repeated prompt prefixes

Cache read is the discounted rate for repeated prompt prefixes (system prompts, agent context).

Capabilities · 7

Vision Reasoning Effort: low / medium / high Tool calling JSON mode JSON schema Streaming

Specifications

Context window
1.0M
Max output
131K
Type
Vision
Creator
Zhipu AI
Live sellers
1
Requests / 24h
3

Estimated monthly cost

30 days at the cheapest live price.

AI Chatbot
1,000 req/day · 2K in · 0.5K out
$30.71/mo
$40.95 OpenRouter
Coding Copilot
500 req/day · 8K in · 2K out
$61.43/mo
$81.90 OpenRouter
AI Agent
100 req/day · 50K in · 5K out
$55.69/mo
$74.25 OpenRouter

Quick start

OpenAI-compatible — change the base URL and key. Get a key from the dashboard.

from openai import OpenAI

client = OpenAI(
    base_url="https://api.qubax.ai/v1",
    api_key="YOUR_QUBAX_API_KEY",
)

response = client.chat.completions.create(
    model="glm-5.3-flashx-legal",
    messages=[{"role": "user", "content": "Hello!"}],
)

print(response.choices[0].message.content)

About Z.ai: GLM 5.3 FlashX Legal

Z.ai: GLM 5.3 FlashX Legal is a multimodal language model developed by Zhipu AI. It's particularly well-suited for analyzing images, screenshots, and visual content, tackling complex, multi-step reasoning problems, orchestrating tool-using agents that call APIs and external services, producing structured outputs for reliable data extraction and handling large contexts of up to 1.0M tokens. Its 1.0M-token context window means you can pass in entire documents, codebases, or conversation histories without losing context. It can write up to 131K tokens in a single response.

As of Nov 3, 2026, Z.ai: GLM 5.3 FlashX Legal costs $0.278 per 1M input tokens and $0.938 per 1M output tokens on Qubax, versus $0.370 / $1.25 on OpenRouter (25% less on input). A typical 1,000 chat requests (2K tokens in, 500 out) come to about $1.02. Pay with USDC, USDT, BTC, ETH or 350+ other coins — no credit card required.

Visual Analysis
Analyze images, screenshots, diagrams, and visual content
Complex Reasoning
Multi-step problem solving, math, and logical analysis
Function Calling
Build agents and tool-using applications
Long Documents
Process entire codebases, books, or lengthy conversations
Chat & Conversation
Build AI chatbots and conversational assistants

Similar-priced alternatives

Frequently asked questions

How much does the Z.ai: GLM 5.3 FlashX Legal API cost?

On Qubax, Z.ai: GLM 5.3 FlashX Legal costs $0.278 per 1M input tokens and $0.938 per 1M output tokens. This is 25% cheaper than OpenRouter's price of $0.370 per 1M input tokens.

Is the Z.ai: GLM 5.3 FlashX Legal API compatible with OpenAI?

Yes. Qubax provides an OpenAI-compatible API. You can use Z.ai: GLM 5.3 FlashX Legal as a drop-in replacement by changing your base URL to https://api.qubax.ai/v1 and using your Qubax API key. It works with Cline, Cursor, OpenCode, Hermes Agent, and any tool that supports OpenAI APIs.

Why is Z.ai: GLM 5.3 FlashX Legal cheaper on Qubax than OpenRouter?

Qubax sources AI inference from an open compute marketplace on the Base blockchain where GPU providers compete on price. We pass the savings to you — 25% cheaper than OpenRouter's price for Z.ai: GLM 5.3 FlashX Legal.

How do I pay for Z.ai: GLM 5.3 FlashX Legal API usage?

Qubax uses prepaid crypto credits. Top up with USDC, USDT, BTC, ETH, SOL or 350+ other coins and your balance is deducted as you use the API. No credit card or KYC required.

What is the context window of Z.ai: GLM 5.3 FlashX Legal?

Z.ai: GLM 5.3 FlashX Legal supports a context window of 1.0M tokens, allowing you to process large documents, codebases, or long conversations in a single request.

What can I build with Z.ai: GLM 5.3 FlashX Legal?

You can use Z.ai: GLM 5.3 FlashX Legal to analyze images and visual content, tackle complex multi-step reasoning tasks, build autonomous agents that call external tools and APIs, generate structured JSON output for data pipelines and process long documents and entire codebases. Because it's served through Qubax's OpenAI-compatible API, integration into existing apps, agents, or workflows takes just a few lines of code.

How fast and reliable is Z.ai: GLM 5.3 FlashX Legal on Qubax?

Responses stream token by token. Latency depends on the provider and prompt length.

Z.ai: GLM 5.3 FlashX Legal vs Claude Opus 5: which should I choose?

Z.ai: GLM 5.3 FlashX Legal by Zhipu AI and Claude Opus 5 by Anthropic are both strong models in a similar price tier. Z.ai: GLM 5.3 FlashX Legal excels at complex reasoning and supports vision/image inputs. Claude Opus 5 comes from a different lab and may have different strengths depending on your workload. On Qubax, Z.ai: GLM 5.3 FlashX Legal starts at $0.278/1M input tokens while Claude Opus 5 comes in at $0.207/1M, so Claude Opus 5 may be worth considering if you need to minimize per-token cost. Both are available on Qubax with crypto payments and OpenAI-compatible APIs, so you can try each and switch freely.

Can I use Z.ai: GLM 5.3 FlashX Legal for commercial projects?

Yes. Z.ai: GLM 5.3 FlashX Legal on Qubax can be used for commercial purposes. You own the outputs you generate. Qubax provides the API infrastructure — you bring your use case.

Why use Z.ai: GLM 5.3 FlashX Legal on Qubax?

25% cheaper

Providers compete on price — you get the cheapest healthy seller.

Pay with crypto

350+ coins (BTC, ETH, SOL, USDT, USDC). No card, no KYC.

OpenAI & Anthropic compatible

Drop-in base URL. Works with Cline, Cursor, Claude Code, OpenAI and Anthropic SDKs.

Get started free →

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Z.ai: GLM 5.3 FlashX Legal

$0.278 in · $0.938 out

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