What is the difference between DeepSeek V3 (March 2024) and Qwen3.5 Plus 2026-02-15?

DeepSeek V3 (March 2024) is developed by DeepSeek while Qwen3.5 Plus 2026-02-15 is developed by Qwen. DeepSeek V3 (March 2024) has a 128K token context window vs Qwen3.5 Plus 2026-02-15's 1.0M. 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 Plus 2026-02-15?

It depends on your use case. DeepSeek V3 (March 2024) and Qwen3.5 Plus 2026-02-15 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 Plus 2026-02-15?

DeepSeek V3 (March 2024) costs $0.14/M input tokens and Qwen3.5 Plus 2026-02-15 costs $0.4/M input tokens. DeepSeek V3 (March 2024) is $0.26/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 Plus 2026-02-15 on Rival?

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

What is the difference between DeepSeek V3 (March 2024) and Qwen3.5 Plus 2026-02-15?

DeepSeek V3 (March 2024) is developed by DeepSeek while Qwen3.5 Plus 2026-02-15 is developed by Qwen. DeepSeek V3 (March 2024) has a 128K token context window vs Qwen3.5 Plus 2026-02-15's 1.0M. 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 Plus 2026-02-15?

It depends on your use case. DeepSeek V3 (March 2024) and Qwen3.5 Plus 2026-02-15 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 Plus 2026-02-15?

DeepSeek V3 (March 2024) costs $0.14/M input tokens and Qwen3.5 Plus 2026-02-15 costs $0.4/M input tokens. DeepSeek V3 (March 2024) is $0.26/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 Plus 2026-02-15 on Rival?

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

DeepSeek V3 (March 2024)vsQwen3.5 Plus 2026-02-15

DeepSeek V3 (March 2024) is cheaper than Qwen3.5 Plus 2026-02-15 at $0.14/M vs $0.4/M input tokens.

DeepSeek V3 (March 2024) and Qwen3.5 Plus 2026-02-15 compared across 53 shared prompts
Spec	DeepSeek V3 (March 2024)	Qwen3.5 Plus 2026-02-15
Input price	$0.14/M tokens	$0.4/M tokens
Output price	$0.28/M tokens	$2.4/M tokens
Context window	128K tokens	1.0M tokens
Released	Mar 2024	Feb 2026
MMLU-Pro	81.2%	87.8

Our Verdict

DeepSeek V3 (March 2024)

Qwen3.5 Plus 2026-02-15

Not enough votes to call it. On the specs, nothing separates them.

DeepSeek V3 (March 2024) costs 8.6x less per token.

Too close to call

What do DeepSeek V3 (March 2024) and Qwen3.5 Plus 2026-02-15 say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

DeepSeek V3 (March 2024)

Input

$0.14

2.9× cheaper

Output

$0.28

8.6× cheaper

Qwen3.5 Plus 2026-02-15

Input

$0.40

Output

$2.40

DeepSeek V3 (March 2024) is cheaper on both — 2.9× input, 8.6× output

Writing DNA

Style Comparison

Similarity

46%

DeepSeek V3 (March 2024) uses 2.6x more lists

DeepSeek V3 (March 2024)

Qwen3.5 Plus 2026-02-15

58%Vocabulary54%

18wSentence Length18w

0.73Hedging0.51

7.5Bold5.3

7.6Lists2.9

0.26Emoji0.10

1.60Headings0.75

0.08Transitions0.09

Based on 16 + 23 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

DeepSeek V3 (March 2024) vs Ox AlphaNew provider

DeepSeek V3 (March 2024) vs MiniMax M3New provider

DeepSeek V3 (March 2024) vs GPT-5New provider

DeepSeek V3 (March 2024) vs Llama 4 MaverickNew provider

DeepSeek V3 (March 2024) vs Claude Sonnet 3.6 (2022-10-22)New provider

DeepSeek V3 (March 2024) vs Claude 3.7 SonnetNew provider

DeepSeek V3 (March 2024) vs Claude 3.7 Thinking SonnetNew provider

DeepSeek V3 (March 2024) vs Claude Sonnet 4.5New provider

Updated Feb 2026

DeepSeek V3 (March 2024)vsQwen3.5 Plus 2026-02-15

DeepSeek V3 (March 2024) is cheaper than Qwen3.5 Plus 2026-02-15 at $0.14/M vs $0.4/M input tokens.

DeepSeek V3 (March 2024) and Qwen3.5 Plus 2026-02-15 compared across 53 shared prompts
Spec	DeepSeek V3 (March 2024)	Qwen3.5 Plus 2026-02-15
Input price	$0.14/M tokens	$0.4/M tokens
Output price	$0.28/M tokens	$2.4/M tokens
Context window	128K tokens	1.0M tokens
Released	Mar 2024	Feb 2026
MMLU-Pro	81.2%	87.8

Our Verdict

DeepSeek V3 (March 2024)

Qwen3.5 Plus 2026-02-15

Not enough votes to call it. On the specs, nothing separates them.

DeepSeek V3 (March 2024) costs 8.6x less per token.

Too close to call

What do DeepSeek V3 (March 2024) and Qwen3.5 Plus 2026-02-15 say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

DeepSeek V3 (March 2024)

Input

$0.14

2.9× cheaper

Output

$0.28

8.6× cheaper

Qwen3.5 Plus 2026-02-15

Input

$0.40

Output

$2.40

DeepSeek V3 (March 2024) is cheaper on both — 2.9× input, 8.6× output

Writing DNA

Style Comparison

Similarity

46%

DeepSeek V3 (March 2024) uses 2.6x more lists

DeepSeek V3 (March 2024)

Qwen3.5 Plus 2026-02-15

58%Vocabulary54%

18wSentence Length18w

0.73Hedging0.51

7.5Bold5.3

7.6Lists2.9

0.26Emoji0.10

1.60Headings0.75

0.08Transitions0.09

Based on 16 + 23 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

DeepSeek V3 (March 2024) vs Ox AlphaNew provider

DeepSeek V3 (March 2024) vs MiniMax M3New provider

DeepSeek V3 (March 2024) vs GPT-5New provider

DeepSeek V3 (March 2024) vs Llama 4 MaverickNew provider

DeepSeek V3 (March 2024) vs Claude Sonnet 3.6 (2022-10-22)New provider

DeepSeek V3 (March 2024) vs Claude 3.7 SonnetNew provider

DeepSeek V3 (March 2024) vs Claude 3.7 Thinking SonnetNew provider

DeepSeek V3 (March 2024) vs Claude Sonnet 4.5New provider