Z.AI GLM-5.1 API
About
Process massive datasets with Z.AI GLM-5.1, featuring an expansive 198K context window for long-document analysis. This model delivers cost-effective pricing at $1.40/1M input and $4.40/1M output tokens, native tool calling support, open weights architecture. Access Z.AI GLM-5.1 via the Firmware API with up to 8K output tokens.
Capabilities
Input Modalities
text
Output Modalities
text
Reasoning
No
Structured Output
No
Tool Use
Yes
WeightsOpen
Temperature
Adjustable
Attachment
Supported
Limits
Context Window
198K
Tokens
Input Limit
198K
Tokens
Max Output
8K
Tokens
Pricing
Standard (per 1M tokens)
Input
$1.40
Output
$4.40
Caching (per 1M tokens)
Read
$0.26
Frequently Asked Questions
Z.AI GLM-5.1 by Firmware costs $1.40 per 1M input tokens and $4.40 per 1M output tokens. Cached reads cost $0.26 per 1M tokens.
Model Details
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
FIRMWARE_API_KEY
API Base URL
https://app.frogbot.ai/api/v1