GPT-5.1 vs Grok 3

Compare OpenAI and xAI AI models

OpenAI
GPT-5.1
vs
xAI
Grok 3
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Cost Comparison (1000 input + 500 output tokens, 100 requests/day)

GPT-5.1

Per Request:$0.006250
Daily:$0.625
Monthly:$18.75
Yearly:$228.125

Grok 3

Per Request:$0.0105
Daily:$1.05
Monthly:$31.50
Yearly:$383.25

Cost Differences

+$0.004250
Per Request
+$0.425
Daily
+$12.75
Monthly
+$155.125
Yearly

Grok 3 costs more than GPT-5.1

Feature Comparison

FeatureGPT-5.1Grok 3
ProviderOpenAIxAI
Input Price$1.25/1M tokens$15.00/1M tokens
Output Price$10.00/1M tokens$15.00/1M tokens
Context Window1,000,000 tokens128,000 tokens
Max Output131,072 tokens131,072 tokens
Categoryflagshipflagship
Capabilities
textvisionaudiocodereasoning
textvisionreasoningcode
Release Date11/12/20252/17/2025

Try Different Scenarios

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GPT-5.1 (OpenAI)

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Grok 3 (xAI)

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