What is the difference between DeepSeek V3 (March 2024) and Qwen3.5 397B A17B?

DeepSeek V3 (March 2024) is developed by DeepSeek while Qwen3.5 397B A17B is developed by Qwen. DeepSeek V3 (March 2024) has a 128K token context window vs Qwen3.5 397B A17B's 262K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, DeepSeek V3 (March 2024) or Qwen3.5 397B A17B?

It depends on your use case. DeepSeek V3 (March 2024) and Qwen3.5 397B A17B 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 DeepSeek V3 (March 2024) cost compared to Qwen3.5 397B A17B?

DeepSeek V3 (March 2024) costs $0.14/M input tokens and Qwen3.5 397B A17B costs $0.6/M input tokens. DeepSeek V3 (March 2024) is $0.46/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 DeepSeek V3 (March 2024) and Qwen3.5 397B A17B on Rival?

This page shows a side-by-side comparison of DeepSeek V3 (March 2024) 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

DeepSeek V3 (March 2024)vsQwen3.5 397B A17B

DeepSeek V3 (March 2024) is cheaper than Qwen3.5 397B A17B at $0.14/M vs $0.6/M input tokens.

DeepSeek V3 (March 2024) and Qwen3.5 397B A17B compared across 53 shared prompts
Spec	DeepSeek V3 (March 2024)	Qwen3.5 397B A17B
Input price	$0.14/M tokens	$0.6/M tokens
Output price	$0.28/M tokens	$3.6/M tokens
Context window	128K tokens	262K tokens
Parameters	Not disclosed	397B (17B active)
Weights	Open	Open
Free API (OpenRouter)	No	No
Released	Mar 2024	Feb 2026
MMLU-Pro	81.2%	87.8