GPT-3.5 TurbovsGrok 3
Grok 3 has a larger context window than GPT-3.5 Turbo (128K tokens vs 16K tokens).
| Spec | GPT-3.5 Turbo | Grok 3 |
|---|---|---|
| Input price | $1.5/M tokens | — |
| Output price | $2/M tokens | — |
| Context window | 16K tokens | 128K tokens |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Mar 2022 | Feb 2025 |
Our Verdict
Grok 3
GPT-3.5 TurboRunner-up
Not enough votes to call it. On the specs, Grok 3 has the edge: bigger model tier, newer, bigger context window.
Slight edge
API pricing
Cost per 1M tokens
GPT-3.5 Turbo
Input
$1.50
Output
$2.00
Grok 3
Input
—
Output
—
Where to run it
1 host
GPT-3.5 Turbo1 host
Grok 3
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.
Writing DNA
Style Comparison
Similarity
61%
Grok 3 uses 2.5x more emoji
GPT-3.5 Turbo
Grok 3
60%Vocabulary54%
30wSentence Length17w
0.49Hedging0.65
0.3Bold2.6
3.1Lists2.3
0.00Emoji0.02
0.00Headings0.48
0.20Transitions0.20
Based on 28 + 27 text responses
Research
What we learned reading every model
FAQ
Common questions
Keep exploring
More comparisons
GPT-3.5 Turbo vs Ox AlphaNew provider
GPT-3.5 Turbo vs Claude Opus 4New provider
GPT-3.5 Turbo vs Claude Opus 4.1New provider
GPT-3.5 Turbo vs Gemini 2.5 Pro (I/O Edition)New provider
GPT-3.5 Turbo vs Sherlock Think AlphaNew provider
GPT-3.5 Turbo vs Solar Pro 3New provider
GPT-3.5 Turbo vs Sonar Pro SearchNew provider
GPT-3.5 Turbo vs Sonoma Dusk AlphaNew provider