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Zhipu AI

GLM-5.1

mainstreamOpen

GLM-5.1 is a Zhipu AI model that delivers a major leap in coding capability, with particularly significant gains in handling long-horizon tasks. Unlike previous models built around minute-level interactions, it can work independently and continuously on extended tasks. It offers a 205K token context window. Priced at 1.4 USD per million input tokens and 4.4 USD per million output tokens, it suits sustained coding and long-running autonomous work.

API Pricing

Input

$1.4

Output

$4.4

Cached input

—

Peak hours

—

USD / 1M tokens

※ Verified via OpenRouter live pricing (2026-11-02): $1.4 input / $4.4 output per million tokens.

Specifications

Context window
205K Tokens
Max output
—
Input modalities
Text
License
Open weights

Capabilities & use cases

Key capabilities

  • Major coding capability gains
  • Long-horizon task handling
  • Independent continuous operation
  • 205K token context window
  • Extended autonomous task execution

Best for

  • Long-horizon coding tasks
  • Autonomous multi-step development work
  • Extended independent task execution
  • Large-codebase context processing

Official links

Website ↗API platform ↗Pricing page ↗Open in comparator ↗

Same vendor

GLM-5.3-FlashGLM-5.3GLM-4.6

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FAQ

What does GLM-5.1 cost?
GLM-5.1 is priced at $4.4 output and $1.4 input (USD per 1M tokens)
How large is the context window of GLM-5.1?
GLM-5.1 has a 205K Tokens context window with up to — output.
Where can I access GLM-5.1?
Official channels: Website and API platform.

Data is refreshed daily and cross-checked against two independent sources; please confirm pricing and specs on the vendor page.