Compare AI Models

Comparing the specifications and intelligence benchmarks for Grok 4.1 Fast (Reasoning), Grok 4.20 Beta 0309 (Reasoning).

Model	Intelligence	MMLU Pro	Context	GPQA	TTFT (s)	Speed (T/s)	Input Price (1M)	Output Price (1M)
Grok 4.1 Fast (Reasoning) xAI	38.6	85.4%	-	85.3%	10.65	134	$0.20	$0.50
Grok 4.20 Beta 0309 (Reasoning)New xAI	48.5	-	-	88.5%	11.21	263	$2.00	$6.00

Grok 4.1 Fast (Reasoning) vs Grok 4.20 Beta 0309 (Reasoning) Comparison 2026: Pricing & Benchmarks