Grok 4.3 vs RoBERTa

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

•Grok 4.3 has a larger context window (1M)

	Grok 4.3	RoBERTa
Intelligence index	90.1	—
Developer	xAI	Meta
Type	LLM	LLM
Access	API only	Open weights
Context window	1,000,000 tokens	512 tokens
Input price	$1.25 / 1M	—
Output price	$2.50 / 1M	—
Speed	88 tok/s	—
Released	May 6, 2026	July 26, 2019
Parameters	—	355M
Input modalities	Text, Image	Text
Output modalities	Text	Text

Grok 4.3 details RoBERTa details