AI Rate Card

Base model

X-Ai/Grok-4-Fast-Reasoning

from $0.18 at 7 providers

xai/grok-4-fast-reasoning · 7 providers · Text models ·

Read also: Grok API pricing: Grok 4.7, Grok 4.3 and Grok 4.1 Fast at every provider

All xAI Grok models at every provider

Found 7

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The same as an API for bots (format=json|csv|yaml, limit, offset):

https://airatecard.com/export?format=json&model=xai%2Fgrok-4-fast-reasoning

API parameters and a form

ModelVariantIconProviderInput, $Output, $Your cost/mo, $Subscription, $/moRegionContextMax outputAcceptsLast checkedRecommendActions
= X-Ai/Grok-4-Fast-Reasoning×
Provider
Pricing
Region
Input
Status
grok-4-fast-reasoningX-Ai/Grok-4-Fast-Reasoningjiekou ↗$0.18$0.45—2M2Mmulti: image, text4 Nov
12:26
grok-4-fast-reasoningX-Ai/Grok-4-Fast-Reasoning302ai ↗$0.20$0.50—2M30Kmulti: image, text4 Nov
12:26
Grok 4 Fast ReasoningX-Ai/Grok-4-Fast-Reasoningvia xAIedenai ↗$0.20$0.50—US2M2Mtext4 Nov
12:00
xAI: Grok 4 Fast ReasoningX-Ai/Grok-4-Fast-Reasoninghelicone ↗$0.20$0.50—2M2Mmulti: image, text4 Nov
12:00
Grok-4-Fast-ReasoningX-Ai/Grok-4-Fast-Reasoningpoe ↗$0.20$0.50—2M128Kmulti: image, text4 Nov
12:26
Grok 4 Fast ReasoningX-Ai/Grok-4-Fast-Reasoningaiml ↗$1.25$2.50—2M2Mtext, image/jpeg, image/png +24 Nov
12:00
Grok 4 Fast (reasoning)X-Ai/Grok-4-Fast-Reasoningaihubmix ↗$0.20$0.50—1M30Kmulti: image, text4 Nov
12:26
may be withdrawn

Ranges in one field: "from-to" - "0.5-3", "-3" (up to), "128k-" (from); a colon works too. Several ticked values of one column are ORed, columns are ANDed.

Input price history, $/1M

Input price history, $/1Mminimummedian$0.20$0.182026-09-192026-11-04$0.18$0.20

Latest: minimum $0.18, median $0.20 (Nov 4, 2026)

The GROK family - base models: 61
About the model: cost of your workload, questions, comparisons, citation

Cost of my workload → in the Tools tab: every provider of this model, cheapest first

Frequently asked questions

How much does X-Ai/Grok-4-Fast-Reasoning API cost?

From $0.18 input and $0.45 output per 1M tokens, at jiekou.

Which provider offers X-Ai/Grok-4-Fast-Reasoning cheapest?

jiekou offers the lowest price, $0.18 per 1M tokens, among 7 providers.

What is the context window of X-Ai/Grok-4-Fast-Reasoning?

2M tokens.

Where is X-Ai/Grok-4-Fast-Reasoning available?

Available in: US.

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vs Claude Opus 4.5 (latest) vs Gemini 2.5 Flash vs Gemini 3.1 Pro Preview

Source: AI Rate Card, https://airatecard.com/en/model/xai/grok-4-fast-reasoning, prices checked 2026-11-04