GPT-5 ProvsGrok 3 Beta
Grok 3 Beta is cheaper than GPT-5 Pro at $2/M vs $15/M input tokens.
| Spec | GPT-5 Pro | Grok 3 Beta |
|---|---|---|
| Input price | $15/M tokens | $2/M tokens |
| Output price | $120/M tokens | $4/M tokens |
| Context window | 400K tokens | 131K tokens |
| Released | Oct 2025 | Apr 2025 |
| LiveCodeBench | 54.3% | 79.4% |
Our Verdict
GPT-5 Pro
Grok 3 BetaRunner-up
Not enough votes to call it. On the specs, GPT-5 Pro has the edge: newer, bigger context window.
Grok 3 Beta costs 30x less per token.
Too close to call
API pricing
Cost per 1M tokens
GPT-5 Pro
Input
$15.00
Output
$120.00
Grok 3 Beta
Input
$2.00
7.5× cheaper
Output
$4.00
30× cheaper
Grok 3 Beta is cheaper on both — 7.5× input, 30× output
Writing DNA
Style Comparison
Similarity
44%
Grok 3 Beta uses 309.1x more bold
GPT-5 Pro
Grok 3 Beta
65%Vocabulary48%
15wSentence Length19w
0.32Hedging0.67
0.0Bold3.1
2.9Lists5.5
0.00Emoji0.00
0.00Headings0.52
0.01Transitions0.28
Based on 11 + 23 text responses
Research
What we learned reading every model
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