What is the difference between GPT-4.5 and Qwen: Qwen3.5 Flash?

GPT-4.5 is developed by OpenAI while Qwen: Qwen3.5 Flash is developed by Qwen. GPT-4.5 has a 128K token context window vs Qwen: Qwen3.5 Flash's 1.0M. You can compare their actual outputs across 24 challenges on Rival to see how they differ in practice.

Which is better, GPT-4.5 or Qwen: Qwen3.5 Flash?

It depends on your use case. GPT-4.5 and Qwen: Qwen3.5 Flash each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 24 challenges so you can judge which fits your needs best.

How much does GPT-4.5 cost compared to Qwen: Qwen3.5 Flash?

GPT-4.5 costs $75/M input tokens and Qwen: Qwen3.5 Flash costs $0.1/M input tokens. Qwen: Qwen3.5 Flash is $74.90/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-4.5 and Qwen: Qwen3.5 Flash on Rival?

This page shows a side-by-side comparison of GPT-4.5 and Qwen: Qwen3.5 Flash 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-4.5 and Qwen: Qwen3.5 Flash?

GPT-4.5 is developed by OpenAI while Qwen: Qwen3.5 Flash is developed by Qwen. GPT-4.5 has a 128K token context window vs Qwen: Qwen3.5 Flash's 1.0M. You can compare their actual outputs across 24 challenges on Rival to see how they differ in practice.

Which is better, GPT-4.5 or Qwen: Qwen3.5 Flash?

It depends on your use case. GPT-4.5 and Qwen: Qwen3.5 Flash each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 24 challenges so you can judge which fits your needs best.

How much does GPT-4.5 cost compared to Qwen: Qwen3.5 Flash?

GPT-4.5 costs $75/M input tokens and Qwen: Qwen3.5 Flash costs $0.1/M input tokens. Qwen: Qwen3.5 Flash is $74.90/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-4.5 and Qwen: Qwen3.5 Flash on Rival?

This page shows a side-by-side comparison of GPT-4.5 and Qwen: Qwen3.5 Flash 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-4.5 vs Qwen: Qwen3.5 Flash: Which Is Better?

Updated Feb 2026

Our Verdict

GPT-4.5

Qwen: Qwen3.5 Flash

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

Qwen: Qwen3.5 Flash is 375x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

GPT-4.5

Input

$75.00

Output

$150.00

Qwen: Qwen3.5 Flash

Input

$0.10

750× cheaper

Output

$0.40

375× cheaper

Qwen: Qwen3.5 Flash is cheaper on both — 750× input, 375× output

Writing DNA

Style Comparison

Similarity

42%

Qwen: Qwen3.5 Flash uses 2.5x more emoji

GPT-4.5

Qwen: Qwen3.5 Flash

63%Vocabulary50%

16wSentence Length14w

0.57Hedging0.35

4.7Bold6.9

6.4Lists4.2

0.00Emoji0.03

1.30Headings1.00

0.54Transitions0.15

Based on 11 + 23 text responses

Research

What we learned reading every model

GPT-4.5 and Qwen: Qwen3.5 Flash 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-4.5 vs MiniMax M3New provider

Qwen: Qwen3.5 Flash vs GPT-5Cross-provider

GPT-4.5 vs Llama 4 MaverickNew provider

Updated Feb 2026

Our Verdict

GPT-4.5

Qwen: Qwen3.5 Flash

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

Qwen: Qwen3.5 Flash is 375x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

GPT-4.5

Input

$75.00

Output

$150.00

Qwen: Qwen3.5 Flash

Input

$0.10

750× cheaper

Output

$0.40

375× cheaper

Qwen: Qwen3.5 Flash is cheaper on both — 750× input, 375× output

Writing DNA

Style Comparison

Similarity

42%

Qwen: Qwen3.5 Flash uses 2.5x more emoji

GPT-4.5

Qwen: Qwen3.5 Flash

63%Vocabulary50%

16wSentence Length14w

0.57Hedging0.35

4.7Bold6.9

6.4Lists4.2

0.00Emoji0.03

1.30Headings1.00

0.54Transitions0.15

Based on 11 + 23 text responses

Research

What we learned reading every model

GPT-4.5 and Qwen: Qwen3.5 Flash 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-4.5 vs MiniMax M3New provider

Qwen: Qwen3.5 Flash vs GPT-5Cross-provider

GPT-4.5 vs Llama 4 MaverickNew provider