What is the difference between OpenAI o4-mini and Qwen3.5 35B A3B?

OpenAI o4-mini is developed by OpenAI while Qwen3.5 35B A3B is developed by Qwen. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, OpenAI o4-mini or Qwen3.5 35B A3B?

It depends on your use case. OpenAI o4-mini and Qwen3.5 35B A3B 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 OpenAI o4-mini cost compared to Qwen3.5 35B A3B?

OpenAI o4-mini costs $1.1/M input tokens and Qwen3.5 35B A3B costs $0.25/M input tokens. Qwen3.5 35B A3B is $0.85/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 o4-mini and Qwen3.5 35B A3B on Rival?

This page shows a side-by-side comparison of OpenAI o4-mini and Qwen3.5 35B A3B 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

OpenAI o4-minivsQwen3.5 35B A3B

Qwen3.5 35B A3B is cheaper than OpenAI o4-mini at $0.25/M vs $1.1/M input tokens.

OpenAI o4-mini and Qwen3.5 35B A3B compared across 53 shared prompts
Spec	OpenAI o4-mini	Qwen3.5 35B A3B
Input price	$1.1/M tokens	$0.25/M tokens
Output price	$4.4/M tokens	$2/M tokens
Context window	—	262K tokens
Parameters	Not disclosed	35B (3B active)
Weights	Closed	Open
Free API (OpenRouter)	No	No
Released	Apr 2025	Feb 2026
SWE-bench Verified	68.1%	69.2%