What is the difference between GPT-5.1-Codex-Mini and Pony Alpha?

GPT-5.1-Codex-Mini is developed by OpenAI while Pony Alpha is developed by OpenRouter. GPT-5.1-Codex-Mini has a 400K token context window vs Pony Alpha's 200K. You can compare their actual outputs across 47 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.1-Codex-Mini or Pony Alpha?

It depends on your use case. GPT-5.1-Codex-Mini and Pony Alpha each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 47 challenges so you can judge which fits your needs best.

How much does GPT-5.1-Codex-Mini cost compared to Pony Alpha?

GPT-5.1-Codex-Mini costs $1.5/M input tokens and Pony Alpha costs $0/M input tokens. Pony Alpha is $1.50/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 GPT-5.1-Codex-Mini and Pony Alpha on Rival?

This page shows a side-by-side comparison of GPT-5.1-Codex-Mini and Pony Alpha 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

GPT-5.1-Codex-MinivsPony Alpha

Pony Alpha is cheaper than GPT-5.1-Codex-Mini at $0/M vs $1.5/M input tokens.

GPT-5.1-Codex-Mini and Pony Alpha compared across 47 shared prompts
Spec	GPT-5.1-Codex-Mini	Pony Alpha
Input price	$1.5/M tokens	Free
Output price	$6/M tokens	Free
Context window	400K tokens	200K tokens
Weights	Closed	—
Free API (OpenRouter)	No	No
Released	Nov 2025	Feb 2026