What is the difference between Claude Sonnet 4.5 and GPT-3.5 Turbo?

Claude Sonnet 4.5 is developed by Anthropic while GPT-3.5 Turbo is developed by OpenAI. Claude Sonnet 4.5 has a 200K token context window vs GPT-3.5 Turbo's 16K. You can compare their actual outputs across 42 challenges on Rival to see how they differ in practice.

Which is better, Claude Sonnet 4.5 or GPT-3.5 Turbo?

It depends on your use case. Claude Sonnet 4.5 and GPT-3.5 Turbo each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 42 challenges so you can judge which fits your needs best.

How much does Claude Sonnet 4.5 cost compared to GPT-3.5 Turbo?

Claude Sonnet 4.5 costs $3/M input tokens and GPT-3.5 Turbo costs $1.5/M input tokens. GPT-3.5 Turbo is $1.50/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare Claude Sonnet 4.5 and GPT-3.5 Turbo on Rival?

This page shows a side-by-side comparison of Claude Sonnet 4.5 and GPT-3.5 Turbo across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

What is the difference between Claude Sonnet 4.5 and GPT-3.5 Turbo?

Claude Sonnet 4.5 is developed by Anthropic while GPT-3.5 Turbo is developed by OpenAI. Claude Sonnet 4.5 has a 200K token context window vs GPT-3.5 Turbo's 16K. You can compare their actual outputs across 42 challenges on Rival to see how they differ in practice.

Which is better, Claude Sonnet 4.5 or GPT-3.5 Turbo?

It depends on your use case. Claude Sonnet 4.5 and GPT-3.5 Turbo each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 42 challenges so you can judge which fits your needs best.

How much does Claude Sonnet 4.5 cost compared to GPT-3.5 Turbo?

Claude Sonnet 4.5 costs $3/M input tokens and GPT-3.5 Turbo costs $1.5/M input tokens. GPT-3.5 Turbo is $1.50/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare Claude Sonnet 4.5 and GPT-3.5 Turbo on Rival?

This page shows a side-by-side comparison of Claude Sonnet 4.5 and GPT-3.5 Turbo across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Claude Sonnet 4.5 vs GPT-3.5 Turbo: Which Is Better?

Updated Sep 2025

Our Verdict

Claude Sonnet 4.5

GPT-3.5 TurboRunner-up

No community votes yet. On paper, Claude Sonnet 4.5 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

API pricing

Cost per 1M tokens

Claude Sonnet 4.5

Input

$3.00

Output

$15.00

GPT-3.5 Turbo

Input

$1.50

2.0× cheaper

Output

$2.00

7.5× cheaper

GPT-3.5 Turbo is cheaper on both — 2.0× input, 7.5× output

Writing DNA

Style Comparison

Similarity

41%

Claude Sonnet 4.5 uses 490.1x more bold

Claude Sonnet 4.5

GPT-3.5 Turbo

64%Vocabulary61%

94wSentence Length16w

0.48Hedging0.23

4.9Bold0.0

8.0Lists3.7

0.45Emoji0.00

1.91Headings0.00

0.07Transitions0.38

Based on 20 + 11 text responses

Research

What we learned reading every model

Claude Sonnet 4.5 and GPT-3.5 Turbo have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

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GPT-3.5 Turbo vs Aurora AlphaNew provider

GPT-3.5 Turbo vs Gemini 2.5 Pro Preview 06-05New provider

Updated Sep 2025

Our Verdict

Claude Sonnet 4.5

GPT-3.5 TurboRunner-up

No community votes yet. On paper, Claude Sonnet 4.5 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

API pricing

Cost per 1M tokens

Claude Sonnet 4.5

Input

$3.00

Output

$15.00

GPT-3.5 Turbo

Input

$1.50

2.0× cheaper

Output

$2.00

7.5× cheaper

GPT-3.5 Turbo is cheaper on both — 2.0× input, 7.5× output

Writing DNA

Style Comparison

Similarity

41%

Claude Sonnet 4.5 uses 490.1x more bold

Claude Sonnet 4.5

GPT-3.5 Turbo

64%Vocabulary61%

94wSentence Length16w

0.48Hedging0.23

4.9Bold0.0

8.0Lists3.7

0.45Emoji0.00

1.91Headings0.00

0.07Transitions0.38

Based on 20 + 11 text responses

Research

What we learned reading every model

Claude Sonnet 4.5 and GPT-3.5 Turbo have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

GPT-3.5 Turbo vs MiniMax M3New provider

GPT-3.5 Turbo vs Aurora AlphaNew provider

GPT-3.5 Turbo vs Gemini 2.5 Pro Preview 06-05New provider