Grok 4.1 Fast vs GPT-4.1 mini: Pricing Comparison
Compare pricing, capabilities, and costs for your LLM workloads.
xAI
Grok 4.1 Fast
Pricing (per 1M tokens)
Input$0.2000
Output$0.5000
Cached Input$0.0500
Context & Output
Context Window2M tokens
Max Output16K tokens
Capabilities
Categorymid
Multimodaltext + image
Fine-tuningNo
StreamingYes
OpenAI
GPT-4.1 mini
Pricing (per 1M tokens)
Input$0.4000
Output$1.60
Cached Input$0.1000
Batch Input$0.2000
Batch Output$0.8000
Context & Output
Context Window1.0M tokens
Max Output32.8K tokens
Capabilities
Categorymid
Multimodaltext + image
Fine-tuningNo
StreamingYes
Quick Verdict
Cheaper Input Price
Grok 4.1 Fast
50.0% cheaper
Cheaper Output Price
Grok 4.1 Fast
68.8% cheaper
Larger Context Window
Grok 4.1 Fast
+952.4K tokens
Cost Comparison
Sample workload: 1,000,000 input tokens + 1,000,000 output tokens
Grok 4.1 Fast
$0.7000
$0.2000/1M input + $0.5000/1M output
GPT-4.1 mini
$2.00
$0.4000/1M input + $1.60/1M output
Grok 4.1 Fast is 65.0% cheaper for this workload.
Frequently Asked Questions
Which is cheaper, Grok 4.1 Fast or GPT-4.1 mini?
For input tokens, Grok 4.1 Fast is cheaper at $0.2000 per 1M tokens. For output tokens, Grok 4.1 Fast is cheaper at $0.5000 per 1M tokens. The overall cost depends on your workload's input/output ratio.
What is the context window size of Grok 4.1 Fast vs GPT-4.1 mini?
Grok 4.1 Fast has a context window of 2M tokens, while GPT-4.1 mini has 1.0M tokens. Grok 4.1 Fast supports a larger context window of 2M tokens, which is beneficial for processing longer documents.
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