GLM 5.3 FlashX Legal API Pricing Calculator

GLM-5.3-FlashX-Legal is Z.aiโ€™s specialized legal AI model for legal research, contract analysis, document review, regulatory interpretation, and legal automation.

GLM 5.3 FlashX Legal is a reasoning model from Z.ai, released 22 October 2026. It pairs a 1,000,000-token context window with up to 128,000 tokens of output, taking text, image, video and file input and returning text. Step-by-step reasoning is supported. It costs $0.37 per million input tokens through Z.ai.

Last updated Oct 31, 2026

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Model Details

Released
Oct 22, 2026
Context Length
1,000,000
Max Output
128,000
Modalities
Text Image Video File → Text
Capabilities
Tool use Structured outputs Prompt caching

Where is GLM 5.3 FlashX Legal a perfect fit?

GLM-5.3-FlashX-Legal is a legal-specialized hosted variant that combines GLM's efficient multimodal architecture with legal-domain specialization, offering long-context processing, reasoning, structured outputs, and tool calling for high-volume legal workflows. It is not simply the general-purpose GLM-5.3-FlashX with a different display name. Its intended differentiation is legal-domain workflows while retaining the FlashX family's economical API pricing and long-context capabilities.

It is best suited for:
- Legal research and case-law analysis
- Contract review and clause extraction
- Legal document summarization
- Regulatory and compliance analysis
- Due diligence and document discovery
- Litigation document processing
- Legal question answering
- Policy and statutory interpretation
- Structured extraction from legal documents
- High-volume legal document automation
- Multilingual legal research workflows

These are a few appropriate application areas based on its legal specialization, not independently established accuracy guarantees. Legal outputs should be checked against authoritative sources and reviewed by qualified professionals.

Quick Model Estimate

(USD 0.3700 per 1M tokens)
(USD 1.2500 per 1M tokens)

Your GLM 5.3 FlashX Legal Cost Estimate

๐Ÿ’ฐ Total Cost

โ€”

for 1000 input + 1000 output tokens

๐Ÿ“ฅ Input (1000 ร— $0.370000) โ€”
๐Ÿ“ค Output (1000 ร— $1.250000) โ€”

Cost Breakdown

๐Ÿ“ฅ Input ๐Ÿ“ค Output

Prices are watched for changes and checked against the provider's own page.

Pricing

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Modality โ†•
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Input Price
(per 1M tokens)
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Output Price
(per 1M tokens)
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Cached Input
(per 1M tokens)
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Context Size โ†•
View
Z.ai LogoZ.aiTextStandard$0.3700$1.2500$0.07501,000,000 tokensโ†’

FAQs about GLM 5.3 FlashX Legal

How much does GLM 5.3 FlashX Legal cost per 1M tokens?

GLM 5.3 FlashX Legal costs $0.37 per million input tokens, and $1.25 per million output tokens.

What does a typical workload cost with GLM 5.3 FlashX Legal?

1,000 requests of 2,000 input and 500 output tokens each โ€” 2,000,000 input and 500,000 output tokens in total โ€” costs $1.365 with GLM 5.3 FlashX Legal at its lowest rates. Use the calculator on this page for your own volumes.

Where can I use GLM 5.3 FlashX Legal?

GLM 5.3 FlashX Legal is available through Z.ai, from $0.37 per million input tokens.

What is GLM 5.3 FlashX Legal's context window?

GLM 5.3 FlashX Legal has a context window of 1,000,000 tokens, and returns up to 128,000 tokens in a single response.

What input types does GLM 5.3 FlashX Legal support?

GLM 5.3 FlashX Legal accepts text, image, video and file input, and returns text.