GLM 5.1 vs R1 1776

Zhipu AI vs Perplexity — benchmarks, pricing, and capabilities side by side.

•R1 1776 has the higher intelligence index (95.4 vs 86.8)
•R1 1776 is cheaper ($0.00 vs $0.98 per 1M input)

	GLM 5.1	R1 1776
Intelligence index	86.8	95.4
Developer	Zhipu AI	Perplexity
Type	LLM	LLM
Access	Open weights	—
Context window	202,752 tokens	—
Input price	$0.98 / 1M	$0.00 / 1M
Output price	$3.08 / 1M	$0.00 / 1M
Speed	53 tok/s	—
Released	April 7, 2026	February 18, 2025
Parameters	—	—
Input modalities	Text	—
Output modalities	Text	—

GLM 5.1 details R1 1776 details