GPT-5 vs Grok 4.5: Pricing Comparison
Compare pricing, capabilities, and costs for your LLM workloads.
OpenAI
GPT-5
Pricing (per 1M tokens)
Input$1.25
Output$10.00
Cached Input$0.1250
Batch Input$0.6250
Batch Output$5.00
Context & Output
Context Window400K tokens
Max Output128K tokens
Capabilities
Categoryflagship
Multimodaltext + image + audio
Fine-tuningNo
StreamingYes
xAI
Grok 4.5
Pricing (per 1M tokens)
Input$2.00
Output$6.00
Cached Input$0.3000
Context & Output
Context Window500K tokens
Max Output32.8K tokens
Capabilities
Categoryflagship
Multimodaltext + image
Fine-tuningNo
StreamingYes
Quick Verdict
Cheaper Input Price
GPT-5
37.5% cheaper
Cheaper Output Price
Grok 4.5
40.0% cheaper
Larger Context Window
Grok 4.5
+100K tokens
Cost Comparison
Sample workload: 1,000,000 input tokens + 1,000,000 output tokens
GPT-5
$11.25
$1.25/1M input + $10.00/1M output
Grok 4.5
$8.00
$2.00/1M input + $6.00/1M output
Grok 4.5 is 28.9% cheaper for this workload.
Frequently Asked Questions
Which is cheaper, GPT-5 or Grok 4.5?
For input tokens, GPT-5 is cheaper at $1.25 per 1M tokens. For output tokens, Grok 4.5 is cheaper at $6.00 per 1M tokens. The overall cost depends on your workload's input/output ratio.
What is the context window size of GPT-5 vs Grok 4.5?
GPT-5 has a context window of 400K tokens, while Grok 4.5 has 500K tokens. Grok 4.5 supports a larger context window of 500K tokens, which is beneficial for processing longer documents.
Need more tools?
Explore our complete suite of LLM calculators and comparison tools.