Grok 4.x models served from xAI's Colossus clusters, with tiered pricing above 200K-token prompts and up to 1M-token context on grok-4.3.
3 models tracked · cheapest input: Grok 4.3 at $1.25/M · official pricing page
grok-4.6
Input /M
$2.00
Output /M
$6.00
Context
500K
xAI's current flagship at $2/$6 under 200K-token prompts — notable for output priced far below premium rivals.
grok-4.5
Input /M
$2.00
Output /M
$6.00
Context
500K
Previous flagship generation at the same $2/$6 with a cheaper cache rate than 4.6.
grok-4.3
Input /M
$1.25
Output /M
$2.50
Context
1M
The value Grok: $1.25/$2.50 with a 1M-token window — one of the cheapest million-context offerings anywhere.
Other providers
All xAI prices verified Aug 16, 2026. Prices change frequently — each model page links to the authoritative source.