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Zhipu GLM

GLM-5.1 pricing, context window and limits

GLM-5.1 costs $1.4 per million input tokens and $4.4 per million output tokens at Zhipu GLM list price. It accepts up to 200,000 tokens of context and returns up to 131,072 tokens.

  • Model id glm-5.1
  • Snapshot

What does GLM-5.1 cost?​

List prices in US dollars per million tokens
Input$1.4
Output$4.4
Cached input (read)$0.26
Cache write$0

US dollars per million tokens. A dash means no price is published.

How much can GLM-5.1 read and write?​

Token limits
Context window200,000
Max output131,072

What can GLM-5.1 do?​

Capabilities
Vision (image input)No
Tool callingYes
Structured outputYes
ReasoningYes
Inputtext
Outputtext

What does a request to GLM-5.1 cost?​

Cost of example requests at list price, in US dollars
A typical request: 1,000 tokens in, 500 out$0.0036
A long request: 10,000 tokens in, 1,000 out$0.018
1,000 typical requests$3.6
1 million tokens in and 1 million out$5.8

Input read from the provider's prompt cache costs $0.26 per million tokens instead of $1.4, 81% less. A request that repeats a 1,000-token prompt from the cache costs $0.0025 instead of $0.0036.

Among 17 Zhipu GLM models with a published price, GLM-5.1 is the 14th cheapest by input price. Its context window is the 8th largest of 17. List prices only; discounts, batch prices and prices above 200K tokens are not shown.

How do I call GLM-5.1 through DVARA?​

Configure the chatglm provider in the DVARA LLM Gateway and send the model id glm-5.1. DVARA, the AI gateway, applies your policies, audit and cost attribution to the call. See LLM cost attribution and budgets.

In DVARA, if you haven't set your own price for a model, its calls are costed at the price in the catalogue that ships with your DVARA version. A price you set in Flightdeck always wins. You can switch catalogue prices off. Then a model with no price you set gets no cost record: its calls count against no budget and appear in no report, and the gateway records the model as unpriced. Every cost record says which price it used.

Which other Zhipu GLM models are there?​

All 17 Zhipu GLM models · Search the full catalogue

Which models from other providers are similar to GLM-5.1?​

These are the closest in context window and input price, one per provider.

Snapshot 16 October 2026. DVARA reviews every price weekly before it is published. Get the whole catalogue as llm-models.json. Prices are list prices in US dollars per million tokens; check your provider contract before you budget.