Question 1

How much does GLM-5.1 cost?

Accepted Answer

GLM-5.1 costs $1.4 per 1 million input tokens and $4.4 per 1 million output tokens. This pricing is set by Zhipu.

Question 2

What tokenizer does GLM-5.1 use?

Accepted Answer

GLM-5.1 uses the cl100k_base tokenizer. This tokenizer has a vocabulary of ~100,000 tokens and is widely used across many models.

Question 3

What is GLM-5.1's context window?

Accepted Answer

GLM-5.1 supports a context window of 200K tokens (200,000 tokens). The maximum output length is 128K tokens.

Question 4

How does GLM-5.1 compare to other models?

Accepted Answer

You can compare GLM-5.1's pricing and capabilities against other LLMs in the comparison table above, or visit the full pricing page for a side-by-side view of all models.

Question 5

How do I count tokens for GLM-5.1?

Accepted Answer

Use the token counter at the top of this page or visit the homepage calculator. Paste your text and it will show the exact token count and cost for GLM-5.1 using the cl100k_base tokenizer.

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