prices synced 2026-09-11

Grok 4.1 Fast

retired

xAI · Released Nov 2025

Compare

Low-cost, fast Grok variant with 2M context. Retired May 15, 2026; traffic redirected to Grok 4.3.

Strengths
Fast, low-cost variant with a 2M-token context.
Best for
High-volume, long-context tasks where speed and price lead.
Limitations
Retired May 2026; traffic redirected to Grok 4.3.

Input / 1M

$0.2

Output / 1M

$0.5

Cached input / 1M

$0.05

Context window

2M

Price history

Price per 1M tokens over timeOutput $0.5; Input $0.2 as of Nov 2025.$0$0.1$0.2$0.3$0.4$0.5Output on 19 Nov 2025: $0.5Out $0.5Input on 19 Nov 2025: $0.2In $0.2Nov 2025

Snapshots

Effective Input Output Cached in Note Source
19 Nov 2025 $0.2 $0.5 $0.05 docs.x.ai

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