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grok-4-fast-reasoning

grok2.0M context2.0M max outputreleased Sep 1, 2025ReasoningTool calling

As of Oct 4, 2026, the cheapest grok-4-fast-reasoning API price is $0.18 per 1M input tokens (Jiekou.AI) and $0.45 per 1M output tokens (Jiekou.AI). grok-4-fast-reasoning is offered by 5 providers in the grok family, reasoning enabled.

Cheapest input
$0.18
Jiekou.AI
Cheapest output
$0.45
Jiekou.AI
Official
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output per 1M tokens
Providers
5
offering this model
Spread
1.1×
max / min output
Free offers
0
free-tier offers

API pricing by provider

Metered per-token prices. Cheapest input and output are highlighted; † marks a context-tier surcharge. How prices are ranked.

grok-4-fast-reasoning API prices by provider in USD per 1M tokens, updated Oct 4, 2026
Jiekou.AICheapest$0.18Cheapest$0.45——2.0M
302.AI$0.2$0.5——2.0M
Helicone$0.2$0.5$0.05—2.0M
Poe$0.2$0.5$0.05—2.0M

grok-4-fast-reasoning pricing FAQ

What is the cheapest grok-4-fast-reasoning API?

As of Oct 4, 2026, Jiekou.AI has the lowest grok-4-fast-reasoning output price at $0.45 per 1M tokens, and Jiekou.AI has the lowest input price at $0.18 per 1M tokens. Prices are metered per-token rates in USD; free tiers and subscription plans are excluded.

How many providers offer grok-4-fast-reasoning?

5 providers list grok-4-fast-reasoning on Sovyron; 4 of them sell it at a metered per-token price.

Is grok-4-fast-reasoning free?

No provider in the Sovyron catalog lists a free tier for grok-4-fast-reasoning.

What is the context window of grok-4-fast-reasoning?

grok-4-fast-reasoning supports a 2.0M-token context window and up to 2.0M output tokens.

Token cost calculator

What a month costs at one provider's published rates. Enter the tokens you expect to send and receive; cached tokens use the cached-input price where the provider lists one, and count as ordinary input where it does not.

Estimated

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