What is the difference between Gemini 3.5 Flash and Grok 3?

Gemini 3.5 Flash is developed by Google AI while Grok 3 is developed by xAI. Gemini 3.5 Flash has a 1.0M token context window vs Grok 3's 128K. You can compare their actual outputs across 52 challenges on Rival to see how they differ in practice.

Which is better, Gemini 3.5 Flash or Grok 3?

It depends on your use case. Gemini 3.5 Flash and Grok 3 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 can I compare Gemini 3.5 Flash and Grok 3 on Rival?

This page shows a side-by-side comparison of Gemini 3.5 Flash and Grok 3 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 Grok 3?

Gemini 3.5 Flash is developed by Google AI while Grok 3 is developed by xAI. Gemini 3.5 Flash has a 1.0M token context window vs Grok 3's 128K. You can compare their actual outputs across 52 challenges on Rival to see how they differ in practice.

Which is better, Gemini 3.5 Flash or Grok 3?

It depends on your use case. Gemini 3.5 Flash and Grok 3 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 can I compare Gemini 3.5 Flash and Grok 3 on Rival?

This page shows a side-by-side comparison of Gemini 3.5 Flash and Grok 3 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 Grok 3: Which Is Better?

Updated May 2026

Our Verdict

Gemini 3.5 Flash

Grok 3

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

Too close to call

API pricing

Cost per 1M tokens

Gemini 3.5 Flash

Input

$1.50

Output

$9.00

Grok 3

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

36%

Grok 3 uses 3.9x more emoji

Gemini 3.5 Flash

Grok 3

59%Vocabulary49%

18wSentence Length18w

0.16Hedging0.94

4.4Bold2.5

3.0Lists3.0

0.00Emoji0.04

0.89Headings0.65

0.11Transitions0.08

Based on 27 + 17 text responses

Research

What we learned reading every model

Gemini 3.5 Flash and Grok 3 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

Grok 3 vs MiniMax M3New provider

Grok 3 vs GPT-5New provider

Grok 3 vs Llama 4 MaverickNew provider

Updated May 2026

Our Verdict

Gemini 3.5 Flash

Grok 3

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

Too close to call

API pricing

Cost per 1M tokens

Gemini 3.5 Flash

Input

$1.50

Output

$9.00

Grok 3

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

36%

Grok 3 uses 3.9x more emoji

Gemini 3.5 Flash

Grok 3

59%Vocabulary49%

18wSentence Length18w

0.16Hedging0.94

4.4Bold2.5

3.0Lists3.0

0.00Emoji0.04

0.89Headings0.65

0.11Transitions0.08

Based on 27 + 17 text responses

Research

What we learned reading every model

Gemini 3.5 Flash and Grok 3 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

Grok 3 vs MiniMax M3New provider

Grok 3 vs GPT-5New provider

Grok 3 vs Llama 4 MaverickNew provider