Grok 4.1 Fast vs Grok Code Fast 1

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Grok 4.1 Fast

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Grok Code Fast 1

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Cost Comparison (1000 input + 500 output tokens, 100 requests/day)

Grok 4.1 Fast

Per Request:$0.000450

Daily:$0.045

Monthly:$1.35

Yearly:$16.425

Grok Code Fast 1

Per Request:$0.000950

Daily:$0.095

Monthly:$2.85

Yearly:$34.675

Cost Differences

+$0.000500

Per Request

+$0.05

Daily

+$1.50

Monthly

+$18.25

Yearly

Grok Code Fast 1 costs more than Grok 4.1 Fast

Feature Comparison

Feature	Grok 4.1 Fast	Grok Code Fast 1
Provider	xAI	xAI
Input Price	$0.20/1M tokens	$0.20/1M tokens
Output Price	$0.50/1M tokens	$1.50/1M tokens
Context Window	2,000,000 tokens	256,000 tokens
Max Output	131,072 tokens	32,768 tokens
Category	efficient	standard
Capabilities	textreasoningcode	textcodereasoning
Release Date	1/15/2026	2/1/2026

Grok 4.1 Fast vs Grok Code Fast 1: Which Should You Choose?

Choosing between Grok 4.1 Fast and Grok Code Fast 1 depends on your priorities: cost efficiency, context length, or raw capability. Grok 4.1 Fast is the more affordable option at $0.20/1M input tokens. Meanwhile, Grok 4.1 Fast offers a significantly larger context window at 2,000,000 tokens vs 256,000 for Grok Code Fast 1.

These models target different tiers: Grok 4.1 Fast is a efficient model while Grok Code Fast 1 is standard. This means they're optimized for different workloads. Grok Code Fast 1 targets more demanding workloads, while Grok 4.1 Fast provides a cost-effective option for everyday tasks.

Output costs matter too. Grok 4.1 Fast charges $0.50/1M output tokens vs $1.50 for Grok Code Fast 1. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Grok 4.1 Fast has the edge here at $0.50/1M output tokens.

Best Use Cases

Choose Grok 4.1 Fast when:

• You need a larger context window (2,000,000 tokens)
• You need longer outputs (up to 131,072 tokens)
• You're already using xAI's API ecosystem
• You're running high-volume, latency-sensitive workloads

Choose Grok Code Fast 1 when:

• You're already using xAI's API ecosystem

Try Different Scenarios

Use the calculator below to see how costs change with different usage patterns

Grok 4.1 Fast (xAI)

Cost Calculator

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Grok Code Fast 1 (xAI)

Cost Calculator

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Model

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Output Tokens

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Frequently Asked Questions

Which is cheaper, Grok 4.1 Fast or Grok Code Fast 1?▼

Grok 4.1 Fast is cheaper for input tokens at $0.20 per million tokens vs $0.20 for Grok Code Fast 1.

What is the context window difference between Grok 4.1 Fast and Grok Code Fast 1?▼

Grok 4.1 Fast supports 2,000,000 tokens while Grok Code Fast 1 supports 256,000 tokens — a difference of 1,744,000 tokens in favor of Grok 4.1 Fast.

Which model is better for AI Agent / Agentic Workflows?▼

Both models support text, code, reasoning. For ai agent / agentic workflows, Grok 4.1 Fast is the lower-cost option, while Grok 4.1 Fast offers a larger context window (2,000,000 vs 256,000 tokens). Choose Grok 4.1 Fast for budget sensitivity or Grok 4.1 Fast for longer context tasks.

Which model has better overall pricing for heavy usage?▼

At 100 requests/day with 1,000 input and 500 output tokens each, Grok 4.1 Fast costs about $1.35/month and Grok Code Fast 1 costs about $2.85/month. Overall, Grok 4.1 Fast has lower combined input + output rates ($0.20 in, $0.50 out) vs Grok Code Fast 1.