What is the difference between Gemini 3.5 Flash and GPT-4.1 Nano?

Gemini 3.5 Flash is developed by Google AI while GPT-4.1 Nano is developed by OpenAI. Gemini 3.5 Flash has a 1.0M token context window vs GPT-4.1 Nano's 1.0M. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Gemini 3.5 Flash or GPT-4.1 Nano?

It depends on your use case. Gemini 3.5 Flash and GPT-4.1 Nano each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How much does Gemini 3.5 Flash cost compared to GPT-4.1 Nano?

Gemini 3.5 Flash costs $1.5/M input tokens and GPT-4.1 Nano costs $0.1/M input tokens. GPT-4.1 Nano is $1.40/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 Gemini 3.5 Flash and GPT-4.1 Nano on Rival?

This page shows a side-by-side comparison of Gemini 3.5 Flash and GPT-4.1 Nano 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 Gemini 3.5 Flash and GPT-4.1 Nano?

Gemini 3.5 Flash is developed by Google AI while GPT-4.1 Nano is developed by OpenAI. Gemini 3.5 Flash has a 1.0M token context window vs GPT-4.1 Nano's 1.0M. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Gemini 3.5 Flash or GPT-4.1 Nano?

It depends on your use case. Gemini 3.5 Flash and GPT-4.1 Nano each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How much does Gemini 3.5 Flash cost compared to GPT-4.1 Nano?

Gemini 3.5 Flash costs $1.5/M input tokens and GPT-4.1 Nano costs $0.1/M input tokens. GPT-4.1 Nano is $1.40/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 Gemini 3.5 Flash and GPT-4.1 Nano on Rival?

This page shows a side-by-side comparison of Gemini 3.5 Flash and GPT-4.1 Nano 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.

Gemini 3.5 Flash vs GPT-4.1 Nano: Which Is Better?

Updated May 2026

Our Verdict

Gemini 3.5 Flash

GPT-4.1 NanoRunner-up

No community votes yet. On paper, Gemini 3.5 Flash has the edge — bigger model tier, newer.

GPT-4.1 Nano is 23x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Gemini 3.5 Flash

Input

$1.50

Output

$9.00

GPT-4.1 Nano

Input

$0.10

15× cheaper

Output

$0.40

23× cheaper

GPT-4.1 Nano is cheaper on both — 15× input, 23× output

Writing DNA

Style Comparison

Similarity

33%

GPT-4.1 Nano uses 4.6x more hedging

Gemini 3.5 Flash

GPT-4.1 Nano

59%Vocabulary57%

18wSentence Length25w

0.16Hedging0.72

4.4Bold5.6

3.0Lists4.9

0.00Emoji0.00

0.89Headings0.71

0.11Transitions0.22

Based on 27 + 24 text responses

Research

What we learned reading every model

Gemini 3.5 Flash and GPT-4.1 Nano 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-4.1 Nano vs MiniMax M3New provider

GPT-4.1 Nano vs Meta: Muse Spark 1.1New provider

GPT-4.1 Nano vs Claude Sonnet 4New provider

Updated May 2026

Our Verdict

Gemini 3.5 Flash

GPT-4.1 NanoRunner-up

No community votes yet. On paper, Gemini 3.5 Flash has the edge — bigger model tier, newer.

GPT-4.1 Nano is 23x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Gemini 3.5 Flash

Input

$1.50

Output

$9.00

GPT-4.1 Nano

Input

$0.10

15× cheaper

Output

$0.40

23× cheaper

GPT-4.1 Nano is cheaper on both — 15× input, 23× output

Writing DNA

Style Comparison

Similarity

33%

GPT-4.1 Nano uses 4.6x more hedging

Gemini 3.5 Flash

GPT-4.1 Nano

59%Vocabulary57%

18wSentence Length25w

0.16Hedging0.72

4.4Bold5.6

3.0Lists4.9

0.00Emoji0.00

0.89Headings0.71

0.11Transitions0.22

Based on 27 + 24 text responses

Research

What we learned reading every model

Gemini 3.5 Flash and GPT-4.1 Nano 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-4.1 Nano vs MiniMax M3New provider

GPT-4.1 Nano vs Meta: Muse Spark 1.1New provider

GPT-4.1 Nano vs Claude Sonnet 4New provider