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Z.ai: GLM 5.3 Prime API Pricing

Z.ai: GLM 5.3 Prime is an API model from z-ai. It costs $2.8 per 1M input tokens and $8.8 per 1M output tokens, with cached input at $0.56. Its context window is 1,000,000 tokens with up to 131,072 output tokens. A workload of 10M input + 2M output tokens costs about $45.6 per month.
Input
$2.8
per 1M tokens
Output
$8.8
per 1M tokens
Cached input
$0.56
per 1M tokens
Context window
1M
1,000,000 tokens
Blended (80/20)
$4
per 1M tokens

GLM-5.3-Prime is the high-speed variant of Z.ai's GLM-5.3, inheriting its full capabilities while delivering 1.5–2× the output throughput through inference acceleration. It supports text input and output with a 1M-token...

How much does Z.ai: GLM 5.3 Prime cost for a real workload?

At 10M input + 2M output tokens per month, Z.ai: GLM 5.3 Prime costs about $45.6 ($28 input + $17.6 output). Try your own volumes in the cost calculator.

What are cheaper alternatives to Z.ai: GLM 5.3 Prime?

Where to run Z.ai: GLM 5.3 Prime

AI/ML API: one API key for 400+ models, including most models tracked here · Novita AI: pay-as-you-go APIs for open models (DeepSeek, Qwen, Llama and more) plus GPU cloud. Prices there follow each platform's own catalog and can differ from the list prices tracked here.

Run it on AI/ML API →Run it on Novita AI →

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Compare Z.ai: GLM 5.3 Prime with other models

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Frequently asked questions

How much does Z.ai: GLM 5.3 Prime cost?

Z.ai: GLM 5.3 Prime costs $2.8 per 1M input tokens and $8.8 per 1M output tokens (list price, snapshot October 22, 2026). At 10M input + 2M output tokens per month that is about $45.6.

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

Z.ai: GLM 5.3 Prime has a context window of 1,000,000 tokens and can return up to 131,072 output tokens per response.

What are cheaper alternatives to Z.ai: GLM 5.3 Prime?

Cheaper models include OpenAI: GPT-5.1-Codex-Max ($1.25 in / $10 out), OpenAI: GPT-5.1 ($1.25 in / $10 out), OpenAI: GPT-5.1-Codex ($1.25 in / $10 out). See the full list on this page.

Is Z.ai: GLM 5.3 Prime free to use?

No. Z.ai: GLM 5.3 Prime is a paid model at $2.8 input / $8.8 output per 1M tokens. 21 free models are listed on the free models page.

Provider: z-ai · Model ID: z-ai/glm-5.3-prime · Modality: text->text · Price snapshot October 22, 2026, refreshed daily. How we collect prices