What is the difference between Gemini 3.1 Pro Preview and GPT-5 Mini?

Gemini 3.1 Pro Preview is developed by Google AI while GPT-5 Mini is developed by OpenAI. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Gemini 3.1 Pro Preview or GPT-5 Mini?

It depends on your use case. Gemini 3.1 Pro Preview and GPT-5 Mini 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 3.1 Pro Preview cost compared to GPT-5 Mini?

Gemini 3.1 Pro Preview costs $2/M input tokens and GPT-5 Mini costs $0.25/M input tokens. GPT-5 Mini is $1.75/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 3.1 Pro Preview and GPT-5 Mini on Rival?

This page shows a side-by-side comparison of Gemini 3.1 Pro Preview and GPT-5 Mini 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 3.1 Pro Preview and GPT-5 Mini?

Gemini 3.1 Pro Preview is developed by Google AI while GPT-5 Mini is developed by OpenAI. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Gemini 3.1 Pro Preview or GPT-5 Mini?

It depends on your use case. Gemini 3.1 Pro Preview and GPT-5 Mini 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 3.1 Pro Preview cost compared to GPT-5 Mini?

Gemini 3.1 Pro Preview costs $2/M input tokens and GPT-5 Mini costs $0.25/M input tokens. GPT-5 Mini is $1.75/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 3.1 Pro Preview and GPT-5 Mini on Rival?

This page shows a side-by-side comparison of Gemini 3.1 Pro Preview and GPT-5 Mini 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.

Updated Feb 2026

Gemini 3.1 Pro PreviewvsGPT-5 Mini

GPT-5 Mini is cheaper than Gemini 3.1 Pro Preview at $0.25/M vs $2/M input tokens.

Gemini 3.1 Pro Preview and GPT-5 Mini compared across 53 shared prompts
Spec	Gemini 3.1 Pro Preview	GPT-5 Mini
Input price	$2/M tokens	$0.25/M tokens
Output price	$12/M tokens	$2/M tokens
Context window	1.0M tokens	—
Released	Feb 2026	Aug 2025
SWE-bench Verified	80.6%	~70%

Our Verdict

Gemini 3.1 Pro Preview

GPT-5 MiniRunner-up

Not enough votes to call it. On the specs, Gemini 3.1 Pro Preview has the edge: bigger model tier, newer, bigger context window.

GPT-5 Mini costs 6.0x less per token.

Too close to call

What do Gemini 3.1 Pro Preview and GPT-5 Mini say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

Gemini 3.1 Pro Preview

Input

$2.00

Output

$12.00

GPT-5 Mini

Input

$0.25

8.0× cheaper

Output

$2.00

6.0× cheaper

GPT-5 Mini is cheaper on both — 8.0× input, 6.0× output

Writing DNA

Style Comparison

Similarity

49%

Gemini 3.1 Pro Preview uses 487.7x more bold

Gemini 3.1 Pro Preview

GPT-5 Mini

54%Vocabulary62%

18wSentence Length21w

0.29Hedging0.16

4.9Bold0.0

3.3Lists3.4

0.00Emoji0.00

0.72Headings0.00

0.14Transitions0.05

Based on 23 + 15 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

GPT-5 Mini vs Ox AlphaNew provider

GPT-5 Mini vs MiniMax M3New provider

GPT-5 Mini vs Gemini 3.6 FlashCross-provider

GPT-5 Mini vs Gemini 3.7 FlashCross-provider

GPT-5 Mini vs Qwen3.6 Max PreviewNew provider

Gemini 3.1 Pro Preview vs Qwen3.6 Plus Preview (free)New provider

GPT-5 Mini vs Qwen3.7 MaxNew provider

GPT-5 Mini vs Qwen3.7 PlusNew provider

Updated Feb 2026

Gemini 3.1 Pro PreviewvsGPT-5 Mini

GPT-5 Mini is cheaper than Gemini 3.1 Pro Preview at $0.25/M vs $2/M input tokens.

Gemini 3.1 Pro Preview and GPT-5 Mini compared across 53 shared prompts
Spec	Gemini 3.1 Pro Preview	GPT-5 Mini
Input price	$2/M tokens	$0.25/M tokens
Output price	$12/M tokens	$2/M tokens
Context window	1.0M tokens	—
Released	Feb 2026	Aug 2025
SWE-bench Verified	80.6%	~70%

Our Verdict

Gemini 3.1 Pro Preview

GPT-5 MiniRunner-up

Not enough votes to call it. On the specs, Gemini 3.1 Pro Preview has the edge: bigger model tier, newer, bigger context window.

GPT-5 Mini costs 6.0x less per token.

Too close to call

What do Gemini 3.1 Pro Preview and GPT-5 Mini say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

Gemini 3.1 Pro Preview

Input

$2.00

Output

$12.00

GPT-5 Mini

Input

$0.25

8.0× cheaper

Output

$2.00

6.0× cheaper

GPT-5 Mini is cheaper on both — 8.0× input, 6.0× output

Writing DNA

Style Comparison

Similarity

49%

Gemini 3.1 Pro Preview uses 487.7x more bold

Gemini 3.1 Pro Preview

GPT-5 Mini

54%Vocabulary62%

18wSentence Length21w

0.29Hedging0.16

4.9Bold0.0

3.3Lists3.4

0.00Emoji0.00

0.72Headings0.00

0.14Transitions0.05

Based on 23 + 15 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

GPT-5 Mini vs Ox AlphaNew provider

GPT-5 Mini vs MiniMax M3New provider

GPT-5 Mini vs Gemini 3.6 FlashCross-provider

GPT-5 Mini vs Gemini 3.7 FlashCross-provider

GPT-5 Mini vs Qwen3.6 Max PreviewNew provider

Gemini 3.1 Pro Preview vs Qwen3.6 Plus Preview (free)New provider

GPT-5 Mini vs Qwen3.7 MaxNew provider

GPT-5 Mini vs Qwen3.7 PlusNew provider