GPT-4.1 nano vs Grok 4.1 Fast: Pricing Comparison
Compare pricing, capabilities, and costs for your LLM workloads.
OpenAI
GPT-4.1 nano
Pricing (per 1M tokens)
Input$0.1000
Output$0.4000
Cached Input$0.0250
Batch Input$0.0500
Batch Output$0.2000
Context & Output
Context Window1.0M tokens
Max Output32.8K tokens
Capabilities
Categorybudget
Multimodaltext + image
Fine-tuningNo
StreamingYes
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
Quick Verdict
Cheaper Input Price
GPT-4.1 nano
50.0% cheaper
Cheaper Output Price
GPT-4.1 nano
20.0% 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
GPT-4.1 nano
$0.5000
$0.1000/1M input + $0.4000/1M output
Grok 4.1 Fast
$0.7000
$0.2000/1M input + $0.5000/1M output
GPT-4.1 nano is 28.6% cheaper for this workload.
Frequently Asked Questions
Which is cheaper, GPT-4.1 nano or Grok 4.1 Fast?
For input tokens, GPT-4.1 nano is cheaper at $0.1000 per 1M tokens. For output tokens, GPT-4.1 nano is cheaper at $0.4000 per 1M tokens. The overall cost depends on your workload's input/output ratio.
What is the context window size of GPT-4.1 nano vs Grok 4.1 Fast?
GPT-4.1 nano has a context window of 1.0M tokens, while Grok 4.1 Fast has 2M tokens. Grok 4.1 Fast supports a larger context window of 2M tokens, which is beneficial for processing longer documents.
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