GPT-3.5 Turbo vs GPT-4o mini

Compare GPT-3.5 Turbo and GPT-4o mini, both from OpenAI, context windows of 16K vs 128K, tested across 20 shared challenges. Updated April 2026.

Which is better, GPT-3.5 Turbo or GPT-4o mini?

GPT-3.5 Turbo and GPT-4o mini are both competitive models. GPT-3.5 Turbo costs $1.5/M input tokens vs $0.15/M for GPT-4o mini. Context windows: 16K vs 128K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-3.5 Turbo and GPT-4o mini

GPT-3.5 Turbo is made by openai while GPT-4o mini is from openai. GPT-3.5 Turbo has a 16K token context window compared to GPT-4o mini's 128K. On pricing, GPT-3.5 Turbo costs $1.5/M input tokens vs $0.15/M for GPT-4o mini.

Our Verdict
GPT-3.5 Turbo
GPT-3.5 Turbo
GPT-4o mini
GPT-4o mini

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

GPT-4o mini is 3.3x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
86%

GPT-4o mini uses 384.3x more bold

GPT-3.5 Turbo
GPT-4o mini
61%Vocabulary54%
16wSentence Length18w
0.23Hedging0.84
0.0Bold3.8
3.7Lists3.3
0.00Emoji0.00
0.00Headings1.03
0.38Transitions0.23
Based on 11 + 22 text responses
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GPT-3.5 TurboGPT-4o mini

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