How much does Grok 4 Fast Reasoning cost?

Grok 4 Fast Reasoning costs $0.20 per 1M input tokens and $0.50 per 1M output tokens. Prices are sourced from official xAI documentation.

Is Grok 4 Fast Reasoning available via API?

Yes. Grok 4 Fast Reasoning is available via the Grok API. Tickerr monitors its uptime and latency every 5 minutes.

Tickerr / Pricing / Grok / Grok 4 Fast Reasoning

Operational· provider status page

Input

$0.20

Output

$0.50

Cached input

$0.05

Batch input

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Effective from Apr 30, 2026. Source: official provider documentation.

Estimated monthly cost · 70% input / 30% output split

cheapestGrok 4 Fast Reasoning$0.290

Grok Code Fast$0.590

Grok Code Fast 1$0.590

Grok Code Fast 1.0825$0.590

Grok 2$4.40

Grok Vision Beta$8.00