Zhipu AIglm-5.1

Z.ai: GLM 5.1 API Pricing

GLM-5.1 delivers a major leap in coding capability, with particularly significant gains in handling long-horizon tasks. Unlike previous models built around minute-level interactions, GLM-5.1 can wo...

Base Input Price$1.40/ 1M tokens

Base Output Price$4.40/ 1M tokens

Prompt Cache Read$0.260-81.43% discount

Batch API Rate-50%24h async offload

Inference Hosts & Aggregator Providers

Compare rates and latency across direct APIs, OpenRouter, and hyperscale cloud providers

Live verified rates

Provider Name	Input / 1M	Output / 1M	Prompt Caching	Access Endpoint
Zhipu AI Direct	$1.40	$4.40	Supported	Connect
OpenRouter	$1.40	$4.40	Supported	Connect

Head-to-Head Comparisons for Z.ai: GLM 5.1

Z.ai: GLM 5.1 vs OpenAI: GPT-6.1 Sol$1.4/M vs $2/M

Z.ai: GLM 5.1 vs GPT-4o (Omni)$1.4/M vs $2.5/M

Z.ai: GLM 5.1 vs Claude 3.5 Sonnet$1.4/M vs $3/M

Z.ai: GLM 5.1 vs DeepSeek-V3 (deepseek-chat)$1.4/M vs $0.27/M