GLM 5.3 Prime

Benchmarks, price, context and versions

Also searched as

GLM-5.3-Prime

Direct answer: GLM 5.3 Prime is a model from Zhipu AI (Z.ai). On OpenRouter, US$ 2.80 per 1 million input tokens and US$ 8.80 per 1 million output tokens.

✓ Good for

very long documents or code (a window of 1 million tokens or more, according to OpenRouter)

✕ Not the best for

when the input budget sits at the top of the table (input price in the highest 25% on OpenRouter)

This block follows a rule of this section, using source data: if the model is in the top 25% of the metric, the item goes under "Good for"; if it is in the bottom half, it goes under "Not the best for". The middle band appears in neither. Price and context use OpenRouter; scores use Epoch AI or OpenRouter Benchmarks, in the latest version we checked.

Benchmarks

no data

Key specs

Lab: Zhipu AI (Z.ai)
Origin: China
Family: GLM Prime provisional data
Weights?what it is: undisclosed
License: no data
Input US$/1M?: US$ 2.80
Output US$/1M: US$ 8.80
Context?: 1,000,000 tokens
Parameters: no data
Input: text
OpenRouter usage?: no data
Downloads (30 days)?: no data
Use cases provisional data: Text Agents
Dates in sources: 2026, listed on OpenRouter

Version history

2026 Z.ai: GLM 5.3 Prime OpenRouter, listed on OpenRouter

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch.

FAQ

What is GLM 5.3 Prime?

GLM 5.3 Prime is a model from Zhipu AI (Z.ai), with undisclosed weights, used for text, agents.

How much does GLM 5.3 Prime cost?

On OpenRouter, US$ 2.80 per 1 million input tokens and US$ 8.80 per 1 million output tokens.

What is the context window of GLM 5.3 Prime?

1,000,000 tokens, per OpenRouter.

Is GLM 5.3 Prime open source?

No data in open sources.

Is GLM 5.3 Prime good for coding?

No data: there is no SWE-bench Verified measurement for it in open sources.

Who made GLM 5.3 Prime?

It was made by Zhipu AI (Z.ai), a lab from China.

provisional data Questions under review: Semrush had no API balance during collection. Answers use source data only.

Models from Zhipu AI (Z.ai)

See lab

Sources

OpenRouter, dados públicos da API; exports de benchmarks e rankings em CC BY 4.0, latest version we checked.

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch. Family and version were grouped by rule from the name.