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Z.ai: GLM 5.3 API Pricing

Z.ai: GLM 5.3 is an API model from z-ai. It costs $0.079 per 1M input tokens and $1.4 per 1M output tokens, with cached input at $0.078. Its context window is 1,048,576 tokens with up to 943,718 output tokens. A workload of 10M input + 2M output tokens costs about $3.59 per month.
Input
$0.079
per 1M tokens
Output
$1.4
per 1M tokens
Cached input
$0.078
per 1M tokens
Context window
1.04858M
1,048,576 tokens
Blended (80/20)
$0.3432
per 1M tokens

GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent tasks. It supports text input and output with a 1M-token context window, and improves...

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

At 10M input + 2M output tokens per month, Z.ai: GLM 5.3 costs about $3.59 ($0.79 input + $2.8 output). Try your own volumes in the cost calculator.

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

Compare Z.ai: GLM 5.3 with other models

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Frequently asked questions

How much does Z.ai: GLM 5.3 cost?

Z.ai: GLM 5.3 costs $0.079 per 1M input tokens and $1.4 per 1M output tokens (list price, snapshot October 21, 2026). At 10M input + 2M output tokens per month that is about $3.59.

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

Z.ai: GLM 5.3 has a context window of 1,048,576 tokens and can return up to 943,718 output tokens per response.

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

Cheaper models include OpenAI: GPT-5.4 Nano ($0.2 in / $1.25 out), DeepSeek: DeepSeek V3 0324 ($0.29 in / $1.14 out), Google: Gemini 3.5 Flash Lite (batch) ($0.15 in / $1.25 out). See the full list on this page.

Is Z.ai: GLM 5.3 free to use?

No. Z.ai: GLM 5.3 is a paid model at $0.079 input / $1.4 output per 1M tokens. 20 free models are listed on the free models page.

Provider: z-ai · Model ID: z-ai/glm-5.3 · Modality: text->text · Price snapshot October 21, 2026, refreshed daily. How we collect prices