Claude Sonnet 4 vs GPT-3.5 Turbo

Compare Claude Sonnet 4 by Anthropic against GPT-3.5 Turbo by OpenAI, context windows of 200K vs 16K, tested across 14 shared challenges. Updated April 2026.

Which is better, Claude Sonnet 4 or GPT-3.5 Turbo?

Claude Sonnet 4 and GPT-3.5 Turbo are both competitive models. Claude Sonnet 4 costs $3/M input tokens vs $1.5/M for GPT-3.5 Turbo. Context windows: 200K vs 16K tokens. Compare their real outputs side by side below.

Key Differences Between Claude Sonnet 4 and GPT-3.5 Turbo

Claude Sonnet 4 is made by anthropic while GPT-3.5 Turbo is from openai. Claude Sonnet 4 has a 200K token context window compared to GPT-3.5 Turbo's 16K. On pricing, Claude Sonnet 4 costs $3/M input tokens vs $1.5/M for GPT-3.5 Turbo.

Our Verdict
Claude Sonnet 4
Claude Sonnet 4
GPT-3.5 Turbo
GPT-3.5 TurboRunner-up

No community votes yet. On paper, Claude Sonnet 4 has the edge — bigger model tier, newer, bigger context window.

GPT-3.5 Turbo is 7.5x cheaper per token — worth considering if cost matters.

Slight edge
Writing DNA

Style Comparison

Similarity
64%

Claude Sonnet 4 uses 503.7x more bold

Claude Sonnet 4
GPT-3.5 Turbo
62%Vocabulary61%
111wSentence Length16w
0.40Hedging0.23
5.0Bold0.0
9.3Lists3.7
0.88Emoji0.00
2.16Headings0.00
0.33Transitions0.38
Based on 17 + 11 text responses
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Claude Sonnet 4GPT-3.5 Turbo

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