Grok 4 vs GPT-5 Pro: Pricing Comparison
Compare pricing, capabilities, and costs for your LLM workloads.
xAI
Grok 4
Pricing (per 1M tokens)
Input$3.00
Output$15.00
Cached Input$0.7500
Context & Output
Context Window256K tokens
Max Output32.8K tokens
Capabilities
Categoryflagship
Multimodaltext + image
Fine-tuningNo
StreamingYes
OpenAI
GPT-5 Pro
Pricing (per 1M tokens)
Input$15.00
Output$120.00
Context & Output
Context Window400K tokens
Max Output128K tokens
Capabilities
Categoryflagship
Multimodaltext + image + audio
Fine-tuningNo
StreamingYes
Quick Verdict
Cheaper Input Price
Grok 4
80.0% cheaper
Cheaper Output Price
Grok 4
87.5% cheaper
Larger Context Window
GPT-5 Pro
+144K tokens
Cost Comparison
Sample workload: 1,000,000 input tokens + 1,000,000 output tokens
Grok 4
$18.00
$3.00/1M input + $15.00/1M output
GPT-5 Pro
$135.00
$15.00/1M input + $120.00/1M output
Grok 4 is 86.7% cheaper for this workload.
Frequently Asked Questions
Which is cheaper, Grok 4 or GPT-5 Pro?
For input tokens, Grok 4 is cheaper at $3.00 per 1M tokens. For output tokens, Grok 4 is cheaper at $15.00 per 1M tokens. The overall cost depends on your workload's input/output ratio.
What is the context window size of Grok 4 vs GPT-5 Pro?
Grok 4 has a context window of 256K tokens, while GPT-5 Pro has 400K tokens. GPT-5 Pro supports a larger context window of 400K tokens, which is beneficial for processing longer documents.
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