What is the difference between GPT-5 and Qwen3.5 397B A17B?

GPT-5 is developed by OpenAI while Qwen3.5 397B A17B is developed by Qwen. GPT-5 has a 400K token context window vs Qwen3.5 397B A17B's 262K. 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 397B A17B?

It depends on your use case. GPT-5 and Qwen3.5 397B A17B 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 397B A17B?

GPT-5 costs $1.25/M input tokens and Qwen3.5 397B A17B costs $0.6/M input tokens. Qwen3.5 397B A17B is $0.65/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 397B A17B on Rival?

This page shows a side-by-side comparison of GPT-5 and Qwen3.5 397B A17B 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 397B A17B

Qwen3.5 397B A17B is cheaper than GPT-5 at $0.6/M vs $1.25/M input tokens.

GPT-5 and Qwen3.5 397B A17B compared across 51 shared prompts
Spec	GPT-5	Qwen3.5 397B A17B
Input price	$1.25/M tokens	$0.6/M tokens
Output price	$10/M tokens	$3.6/M tokens
Context window	400K tokens	262K tokens
Parameters	Not disclosed	397B (17B active)
Weights	Closed	Open
Free API (OpenRouter)	No	No
Released	Aug 2025	Feb 2026
SWE-bench Verified	74.9%	76.4%