Grok 4.1 Fast vs Claude Sonnet 4.5: 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
Anthropic
Claude Sonnet 4.5
Pricing (per 1M tokens)
Input$3.00
Output$15.00
Cached Input$0.3000
Batch Input$1.50
Batch Output$7.50
Context & Output
Context Window200K tokens
Max Output64K tokens
Capabilities
Categorymid
Multimodaltext + image
Fine-tuningNo
StreamingYes
Quick Verdict
Cheaper Input Price
Grok 4.1 Fast
93.3% cheaper
Cheaper Output Price
Grok 4.1 Fast
96.7% cheaper
Larger Context Window
Grok 4.1 Fast
+1.8M 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
Claude Sonnet 4.5
$18.00
$3.00/1M input + $15.00/1M output
Grok 4.1 Fast is 96.1% cheaper for this workload.
Frequently Asked Questions
Which is cheaper, Grok 4.1 Fast or Claude Sonnet 4.5?
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 Claude Sonnet 4.5?
Grok 4.1 Fast has a context window of 2M tokens, while Claude Sonnet 4.5 has 200K tokens. Grok 4.1 Fast supports a larger context window of 2M tokens, which is beneficial for processing longer documents.
Need more tools?
Explore our complete suite of LLM calculators and comparison tools.