What is the difference between GPT-5.4 and Sonar Pro Search?

GPT-5.4 is developed by OpenAI while Sonar Pro Search is developed by Perplexity. GPT-5.4 has a 1.1M token context window vs Sonar Pro Search's 200K. You can compare their actual outputs across 52 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.4 or Sonar Pro Search?

It depends on your use case. GPT-5.4 and Sonar Pro Search each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 52 challenges so you can judge which fits your needs best.

How much does GPT-5.4 cost compared to Sonar Pro Search?

GPT-5.4 costs $2.5/M input tokens and Sonar Pro Search costs $3/M input tokens. GPT-5.4 is $0.50/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 GPT-5.4 and Sonar Pro Search on Rival?

This page shows a side-by-side comparison of GPT-5.4 and Sonar Pro Search 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 GPT-5.4 and Sonar Pro Search?

GPT-5.4 is developed by OpenAI while Sonar Pro Search is developed by Perplexity. GPT-5.4 has a 1.1M token context window vs Sonar Pro Search's 200K. You can compare their actual outputs across 52 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.4 or Sonar Pro Search?

It depends on your use case. GPT-5.4 and Sonar Pro Search each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 52 challenges so you can judge which fits your needs best.

How much does GPT-5.4 cost compared to Sonar Pro Search?

GPT-5.4 costs $2.5/M input tokens and Sonar Pro Search costs $3/M input tokens. GPT-5.4 is $0.50/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 GPT-5.4 and Sonar Pro Search on Rival?

This page shows a side-by-side comparison of GPT-5.4 and Sonar Pro Search 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.

GPT-5.4 vs Sonar Pro Search: Which Is Better?

Updated Mar 2026

Our Verdict

GPT-5.4

Sonar Pro SearchRunner-up

No community votes yet. On paper, GPT-5.4 has the edge — bigger model tier, newer, bigger context window, major provider backing.

Slight edge

API pricing

Cost per 1M tokens

GPT-5.4

Input

$2.50

1.2× cheaper

Output

$15.00

Sonar Pro Search

Input

$3.00

Output

$15.00

Writing DNA

Style Comparison

Similarity

62%

Sonar Pro Search uses 3.6x more transitions

GPT-5.4

Sonar Pro Search

54%Vocabulary60%

28wSentence Length22w

0.69Hedging0.30

4.1Bold2.7

8.1Lists2.6

0.00Emoji0.00

1.84Headings2.08

0.02Transitions0.07

Based on 22 + 25 text responses

Research

What we learned reading every model

GPT-5.4 and Sonar Pro Search 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

Sonar Pro Search vs MiniMax M3New provider

Sonar Pro Search vs Claude Opus 4New provider

Sonar Pro Search vs Gemini 2.5 Pro Preview 06-05New provider

Updated Mar 2026

Our Verdict

GPT-5.4

Sonar Pro SearchRunner-up

No community votes yet. On paper, GPT-5.4 has the edge — bigger model tier, newer, bigger context window, major provider backing.

Slight edge

API pricing

Cost per 1M tokens

GPT-5.4

Input

$2.50

1.2× cheaper

Output

$15.00

Sonar Pro Search

Input

$3.00

Output

$15.00

Writing DNA

Style Comparison

Similarity

62%

Sonar Pro Search uses 3.6x more transitions

GPT-5.4

Sonar Pro Search

54%Vocabulary60%

28wSentence Length22w

0.69Hedging0.30

4.1Bold2.7

8.1Lists2.6

0.00Emoji0.00

1.84Headings2.08

0.02Transitions0.07

Based on 22 + 25 text responses

Research

What we learned reading every model

GPT-5.4 and Sonar Pro Search 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

Sonar Pro Search vs MiniMax M3New provider

Sonar Pro Search vs Claude Opus 4New provider

Sonar Pro Search vs Gemini 2.5 Pro Preview 06-05New provider