GPT-3.5 TurbovsGrok 3 Beta
GPT-3.5 Turbo is cheaper than Grok 3 Beta at $1.5/M vs $2/M input tokens.
| Spec | GPT-3.5 Turbo | Grok 3 Beta |
|---|---|---|
| Input price | $1.5/M tokens | $2/M tokens |
| Output price | $2/M tokens | $4/M tokens |
| Context window | 16K tokens | 131K tokens |
| Parameters | Not disclosed | Not disclosed |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Mar 2022 | Apr 2025 |
Our Verdict
Grok 3 Beta
GPT-3.5 TurboRunner-up
Not enough votes to call it. On the specs, Grok 3 Beta has the edge: bigger model tier, newer, bigger context window.
Slight edge
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
GPT-3.5 Turbo
Input
$1.50
1.3× cheaper
Output
$2.00
2.0× cheaper
Grok 3 Beta
Input
$2.00
Output
$4.00
GPT-3.5 Turbo is cheaper on both: 1.3× input, 2.0× output.
Where to run it
1 host
GPT-3.5 Turbo1 host
Grok 3 Beta
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 11 Sep 2026.
Writing DNA
Style Comparison
Similarity
63%
Grok 3 Beta uses 50.0x more headings
GPT-3.5 Turbo
Grok 3 Beta
60%Vocabulary51%
30wSentence Length19w
0.49Hedging0.59
0.3Bold3.1
3.1Lists5.0
0.00Emoji0.00
0.00Headings0.50
0.20Transitions0.28
Based on 28 + 28 text responses
Research
What we learned reading every model
FAQ
Common questions
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