Qwen: Qwen3.5 Flash vs Qwen: Qwen3.5 Plus 2026-02-15
Compare Qwen: Qwen3.5 Flash and Qwen: Qwen3.5 Plus 2026-02-15, both from Qwen, context windows of 1.0M vs 1.0M, tested across 53 shared challenges.
Our Verdict
Qwen: Qwen3.5 Plus 2026-02-15
Qwen: Qwen3.5 FlashRunner-up
No community votes yet. On paper, Qwen: Qwen3.5 Plus 2026-02-15 has the edge — bigger model tier.
Qwen: Qwen3.5 Flash is 6.0x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Qwen: Qwen3.5 Flash
Input
$0.10
4.0× cheaper
Output
$0.40
6.0× cheaper
Qwen: Qwen3.5 Plus 2026-02-15
Input
$0.40
Output
$2.40
Qwen: Qwen3.5 Flash is cheaper on both — 4.0× input, 6.0× output
Writing DNA
Style Comparison
Similarity
82%
Qwen: Qwen3.5 Plus 2026-02-15 uses 3.9x more emoji
Qwen: Qwen3.5 Flash
Qwen: Qwen3.5 Plus 2026-02-15
50%Vocabulary54%
14wSentence Length18w
0.35Hedging0.51
6.9Bold5.3
4.2Lists2.9
0.03Emoji0.10
1.00Headings0.75
0.15Transitions0.09
Based on 23 + 23 text responses
Research
What we learned reading every model
FAQ
