What is the difference between GPT-5 and Qwen3.5 Plus 2026-02-15?

GPT-5 is developed by OpenAI while Qwen3.5 Plus 2026-02-15 is developed by Qwen. GPT-5 has a 400K token context window vs Qwen3.5 Plus 2026-02-15's 1.0M. You can compare their actual outputs across 51 challenges on Rival to see how they differ in practice.

Which is better, GPT-5 or Qwen3.5 Plus 2026-02-15?

It depends on your use case. GPT-5 and Qwen3.5 Plus 2026-02-15 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 51 challenges so you can judge which fits your needs best.

How much does GPT-5 cost compared to Qwen3.5 Plus 2026-02-15?

GPT-5 costs $1.25/M input tokens and Qwen3.5 Plus 2026-02-15 costs $0.4/M input tokens. Qwen3.5 Plus 2026-02-15 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 GPT-5 and Qwen3.5 Plus 2026-02-15 on Rival?

This page shows a side-by-side comparison of GPT-5 and Qwen3.5 Plus 2026-02-15 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-5vsQwen3.5 Plus 2026-02-15

Qwen3.5 Plus 2026-02-15 is cheaper than GPT-5 at $0.4/M vs $1.25/M input tokens.

GPT-5 and Qwen3.5 Plus 2026-02-15 compared across 51 shared prompts
Spec	GPT-5	Qwen3.5 Plus 2026-02-15
Input price	$1.25/M tokens	$0.4/M tokens
Output price	$10/M tokens	$2.4/M tokens
Context window	400K tokens	1.0M tokens
Parameters	Not disclosed	Not disclosed
Weights	Closed	Closed
Free API (OpenRouter)	No	No
Released	Aug 2025	Feb 2026