Is xAI: Grok Build 0.1 or xAI: Grok 4.20 cheaper?

xAI: Grok Build 0.1 is cheaper on output tokens ($2.00 vs $2.50 per 1M).

Which has the larger context window, xAI: Grok Build 0.1 or xAI: Grok 4.20?

xAI: Grok 4.20 has the larger context window (2M tokens).

xAI: Grok Build 0.1 vs xAI: Grok 4.20

xAI: Grok Build 0.1 is cheaper on output tokens, while xAI: Grok 4.20 offers a larger context window. Choose xAI: Grok Build 0.1 or xAI: Grok 4.20 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	xAI: Grok Build 0.1	xAI: Grok 4.20
Provider	xAI	xAI
Input / 1M tokens	$1.00	$1.25
Output / 1M tokens	$2.00	$2.50
Context window	256K	2M
Parameters	—	500B
Open weights	—	No
Released	—	Feb 2026

xAI: Grok Build 0.1 details →xAI: Grok 4.20 details →

FAQ

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.