GPT-3.5 Turbo vs Grok 3
Compare GPT-3.5 Turbo by OpenAI against Grok 3 by xAI, context windows of 16K vs 128K, tested across 52 shared challenges. Updated May 2026.
Which is better, GPT-3.5 Turbo or Grok 3?
GPT-3.5 Turbo and Grok 3 are both competitive models. Context windows: 16K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-3.5 Turbo and Grok 3
GPT-3.5 Turbo is made by openai while Grok 3 is from xai. GPT-3.5 Turbo has a 16K token context window compared to Grok 3's 128K.
API pricing
Per 1M tokens
GPT-3.5 Turbo
Input
$1.50
Output
$2.00
Grok 3
Input
—
Output
—
Our Verdict
Grok 3
GPT-3.5 TurboRunner-up
No community votes yet. On paper, Grok 3 has the edge — bigger model tier, newer, bigger context window.
Slight edge
Writing DNA
Style Comparison
Similarity
46%
Grok 3 uses 246.4x more bold
GPT-3.5 Turbo
Grok 3
61%Vocabulary49%
16wSentence Length18w
0.23Hedging0.94
0.0Bold2.5
3.7Lists3.0
0.00Emoji0.04
0.00Headings0.65
0.38Transitions0.08
Based on 11 + 17 text responses
FAQ
