What is the difference between OpenAI Codex Mini and Gemini 3.7 Flash?

OpenAI Codex Mini is developed by OpenAI while Gemini 3.7 Flash is developed by Google AI. OpenAI Codex Mini has a 200K token context window vs Gemini 3.7 Flash's 1.0M. You can compare their actual outputs across 10 challenges on Rival to see how they differ in practice.

Which is better, OpenAI Codex Mini or Gemini 3.7 Flash?

It depends on your use case. OpenAI Codex Mini and Gemini 3.7 Flash each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 10 challenges so you can judge which fits your needs best.

How much does OpenAI Codex Mini cost compared to Gemini 3.7 Flash?

OpenAI Codex Mini costs $1.5/M input tokens and Gemini 3.7 Flash costs $0.375/M input tokens. Gemini 3.7 Flash is $1.13/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 OpenAI Codex Mini and Gemini 3.7 Flash on Rival?

This page shows a side-by-side comparison of OpenAI Codex Mini and Gemini 3.7 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 OpenAI Codex Mini and Gemini 3.7 Flash?

OpenAI Codex Mini is developed by OpenAI while Gemini 3.7 Flash is developed by Google AI. OpenAI Codex Mini has a 200K token context window vs Gemini 3.7 Flash's 1.0M. You can compare their actual outputs across 10 challenges on Rival to see how they differ in practice.

Which is better, OpenAI Codex Mini or Gemini 3.7 Flash?

It depends on your use case. OpenAI Codex Mini and Gemini 3.7 Flash each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 10 challenges so you can judge which fits your needs best.

How much does OpenAI Codex Mini cost compared to Gemini 3.7 Flash?

OpenAI Codex Mini costs $1.5/M input tokens and Gemini 3.7 Flash costs $0.375/M input tokens. Gemini 3.7 Flash is $1.13/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 OpenAI Codex Mini and Gemini 3.7 Flash on Rival?

This page shows a side-by-side comparison of OpenAI Codex Mini and Gemini 3.7 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.

OpenAI Codex Mini vs Gemini 3.7 Flash: Which Is Better?

Updated Aug 2026

Our Verdict

Gemini 3.7 Flash

OpenAI Codex MiniRunner-up

No community votes yet. On paper, Gemini 3.7 Flash has the edge — bigger model tier, newer, bigger context window.

Gemini 3.7 Flash is 3.2x cheaper per token — worth considering if cost matters.

Slight edge

What do OpenAI Codex Mini and Gemini 3.7 Flash say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

OpenAI Codex Mini

Input

$1.50

Output

$6.00

Gemini 3.7 Flash

Input

$0.38

4.0× cheaper

Output

$1.88

3.2× cheaper

Gemini 3.7 Flash is cheaper on both — 4.0× input, 3.2× output

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

OpenAI Codex Mini vs Ox AlphaNew provider

OpenAI Codex Mini vs MiniMax M3New provider

OpenAI Codex Mini vs Gemini 3.6 FlashCross-provider

Updated Aug 2026

Our Verdict

Gemini 3.7 Flash

OpenAI Codex MiniRunner-up

No community votes yet. On paper, Gemini 3.7 Flash has the edge — bigger model tier, newer, bigger context window.

Gemini 3.7 Flash is 3.2x cheaper per token — worth considering if cost matters.

Slight edge

What do OpenAI Codex Mini and Gemini 3.7 Flash say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

OpenAI Codex Mini

Input

$1.50

Output

$6.00

Gemini 3.7 Flash

Input

$0.38

4.0× cheaper

Output

$1.88

3.2× cheaper

Gemini 3.7 Flash is cheaper on both — 4.0× input, 3.2× output

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

OpenAI Codex Mini vs Ox AlphaNew provider

OpenAI Codex Mini vs MiniMax M3New provider

OpenAI Codex Mini vs Gemini 3.6 FlashCross-provider