Atlas / xAI / Grok Fast

Grok Fast

Fast, cost-efficient Grok variant for lightweight tasks.

Preview Tools

Current pricing

Input

$0.20

Output

$0.50

Cached input

$0.05

per 1M tokens Source ↗

Capabilities

✓ Function calling / Tools

✗ Image understanding

✗ Extended thinking / Reasoning

✗ Audio input/output

TierUnitInputCached inputOutputEffectiveSource

Standard Per 1M tokens $0.20 $0.05 $0.50 Jan. 9, 2026 Source