Grok 4.3 vs R1 1776

xAI vs Perplexity — benchmarks, pricing, and capabilities side by side.

•R1 1776 has the higher intelligence index (95.4 vs 90.1)
•R1 1776 is cheaper ($0.00 vs $1.25 per 1M input)

	Grok 4.3	R1 1776
Intelligence index	90.1	95.4
Developer	xAI	Perplexity
Type	LLM	LLM
Access	API only	—
Context window	1,000,000 tokens	—
Input price	$1.25 / 1M	$0.00 / 1M
Output price	$2.50 / 1M	$0.00 / 1M
Speed	88 tok/s	—
Released	May 6, 2026	February 18, 2025
Parameters	—	—
Input modalities	Text, Image	—
Output modalities	Text	—

Grok 4.3 details R1 1776 details