Grok-4 Fast vs GPT-5 Mini
Side-by-side comparison of pricing, features, and capabilities
Pricing
Input / 1M tokens
$0.200
$0.300
Output / 1M tokens
$0.500
$1.00
Avg. Cost / 1M
$0.350
$0.650
Specifications
Context Window
256K
128K
Tier
budget
mid
Provider
xAI
OpenAI
Capabilities
Feature
grok-4-fast
gpt-5-mini
text
code
Verdict
Best for Cost
grok-4-fast is 86% cheaper on average
Best for Quality
gpt-5-mini (mid tier) is positioned as higher quality
Best for Long Documents
grok-4-fast has a larger context window (256K)
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