What is the difference between Gemini 3 Flash Preview and o1?

Gemini 3 Flash Preview is developed by Google AI while o1 is developed by OpenAI. Gemini 3 Flash Preview has a 1.0M token context window vs o1's 128K. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, Gemini 3 Flash Preview or o1?

It depends on your use case. Gemini 3 Flash Preview and o1 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 54 challenges so you can judge which fits your needs best.

How much does Gemini 3 Flash Preview cost compared to o1?

Gemini 3 Flash Preview costs $0.5/M input tokens and o1 costs $15/M input tokens. Gemini 3 Flash Preview is $14.50/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 Gemini 3 Flash Preview and o1 on Rival?

This page shows a side-by-side comparison of Gemini 3 Flash Preview and o1 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 Flash Preview and o1?

Gemini 3 Flash Preview is developed by Google AI while o1 is developed by OpenAI. Gemini 3 Flash Preview has a 1.0M token context window vs o1's 128K. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, Gemini 3 Flash Preview or o1?

It depends on your use case. Gemini 3 Flash Preview and o1 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 54 challenges so you can judge which fits your needs best.

How much does Gemini 3 Flash Preview cost compared to o1?

Gemini 3 Flash Preview costs $0.5/M input tokens and o1 costs $15/M input tokens. Gemini 3 Flash Preview is $14.50/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 Gemini 3 Flash Preview and o1 on Rival?

This page shows a side-by-side comparison of Gemini 3 Flash Preview and o1 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 Flash Preview vs o1: Which Is Better?

Updated Dec 2025

Our Verdict

Gemini 3 Flash Preview

o1Runner-up

No community votes yet. On paper, Gemini 3 Flash Preview has the edge — bigger model tier, newer, bigger context window.

Gemini 3 Flash Preview is 20x cheaper per token — worth considering if cost matters.

Slight edge

API pricing

Cost per 1M tokens

Gemini 3 Flash Preview

Input

$0.50

30× cheaper

Output

$3.00

20× cheaper

Input

$15.00

Output

$60.00

Gemini 3 Flash Preview is cheaper on both — 30× input, 20× output

Writing DNA

Style Comparison

Similarity

42%

o1 uses 5.3x more transitions

Gemini 3 Flash Preview

55%Vocabulary64%

18wSentence Length16w

0.42Hedging0.76

7.1Bold5.0

4.5Lists2.6

0.00Emoji0.00

0.84Headings0.44

0.07Transitions0.40

Based on 24 + 13 text responses

Research

What we learned reading every model

Gemini 3 Flash Preview and o1 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

o1 vs MiniMax M3New provider

o1 vs Meta: Muse Spark 1.1New provider

o1 vs Claude Sonnet 4New provider

Updated Dec 2025

Our Verdict

Gemini 3 Flash Preview

o1Runner-up

No community votes yet. On paper, Gemini 3 Flash Preview has the edge — bigger model tier, newer, bigger context window.

Gemini 3 Flash Preview is 20x cheaper per token — worth considering if cost matters.

Slight edge

API pricing

Cost per 1M tokens

Gemini 3 Flash Preview

Input

$0.50

30× cheaper

Output

$3.00

20× cheaper

Input

$15.00

Output

$60.00

Gemini 3 Flash Preview is cheaper on both — 30× input, 20× output

Writing DNA

Style Comparison

Similarity

42%

o1 uses 5.3x more transitions

Gemini 3 Flash Preview

55%Vocabulary64%

18wSentence Length16w

0.42Hedging0.76

7.1Bold5.0

4.5Lists2.6

0.00Emoji0.00

0.84Headings0.44

0.07Transitions0.40

Based on 24 + 13 text responses

Research

What we learned reading every model

Gemini 3 Flash Preview and o1 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

o1 vs MiniMax M3New provider

o1 vs Meta: Muse Spark 1.1New provider

o1 vs Claude Sonnet 4New provider