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Qwen3.5-Flash vs Qwen3.5 Plus 2026-02-15

Qwen3.5-Flash

Alibaba

69#122
vs
Signal-by-Signal Comparison
SignalQwen3.5-FlashDeltaQwen3.5 Plus 2026-02-15
Capabilities
83
--
83
Benchmarks
66
+66
0
Pricing
100
+1
98
Context window size
95
--
95
Recency
100
--
100
Output Capacity
80
--
80
Overall Result
2 wins
of 6
0 wins
Qwen3.5-Flash wins 2 of 6 signals

Score History

Score History (24 data points)
Qwen3.5-FlashQwen3.5 Plus 2026-02-15
Qwen3.5-Flash

68.6

current score

Leader

Qwen3.5-Flash

right now

Qwen3.5 Plus 2026-02-15

68.2

current score

LMMarketCap.com
Interactive Price Comparison
100Kcalls/month
1,000tokens (~1,333 chars)
500tokens (~667 chars)

Qwen3.5-Flash

Alibaba

Best Value
Per request$0.000195
Daily$0.65
Monthly$19.50
Annual$234.00

Qwen3.5 Plus 2026-02-15

Alibaba

Per request$0.001040
Daily$3.47
Monthly$104.00
Annual$1248.00

Qwen3.5-Flash saves you $84.50/month

That's $1014.00/year compared to Qwen3.5 Plus 2026-02-15 at your current usage level of 100K calls/month.

81% cheaper
Choose Qwen3.5-Flash for cost optimization

Qwen3.5-Flash pricing:
Input:$0.07/M tokens
Output:$0.26/M tokens
Qwen3.5 Plus 2026-02-15 pricing:
Input:$0.26/M tokens
Output:$1.56/M tokens
Winner
Qwen3.5-Flash

Alibaba

69

Composite Score

Qwen3.5 Plus 2026-02-15

Alibaba

68

Composite Score

Signal-by-Signal Comparison
MetricQwen3.5-FlashQwen3.5 Plus 2026-02-15Winner
Overall Score
69
68
Qwen3.5-Flash
Rank#122#124
Qwen3.5-Flash
Quality Rank#122#124
Qwen3.5-Flash
Adoption Rank#122#124
Qwen3.5-Flash
Parameters------
Context Window1000K1000K--
Pricing$0.07/$0.26/M$0.26/$1.56/M--
Signal Scores
Capabilities
83
83
Qwen3.5-Flash
Benchmarks
66
--
Qwen3.5-Flash
Pricing
100
98
Qwen3.5-Flash
Context window size
95
95
Qwen3.5-Flash
Recency
100
100
Qwen3.5-Flash
Output Capacity
80
80
Qwen3.5-Flash
Benchmark Head-to-Head(1 benchmarks)
Qwen3.5-Flash: 0Qwen3.5 Plus: 0
Qwen3.5-Flash
Qwen3.5 Plus
Normalized 0-100%
Arena Elo
1397-
Benchmark Interpretation

Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.

Qwen3.5-FlashCompetitive

Scores 69/100 (rank #122), placing it in the top 58% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100
Qwen3.5 Plus 2026-02-15Competitive

Scores 68/100 (rank #124), placing it in the top 58% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100

With only a 0-point gap, these models are in the same performance tier. The practical difference in output quality is minimal - your choice should depend on pricing, latency requirements, and specific feature needs.

When to Use Each Model

Choose Qwen3.5-Flash when you need:

  • High-volume production workloads where API costs must be minimized
  • Step-by-step reasoning and chain-of-thought problem solving

Choose Qwen3.5 Plus 2026-02-15 when you need:

  • Step-by-step reasoning and chain-of-thought problem solving
Cost-Performance Analysis
Qwen3.5-FlashBest Value
Input cost$0.07/M tokens
Output cost$0.26/M tokens
Cost per quality point$0.005
Est. monthly (1M tokens/day)$4.88
Qwen3.5 Plus 2026-02-15
Input cost$0.26/M tokens
Output cost$1.56/M tokens
Cost per quality point$0.027
Est. monthly (1M tokens/day)$27.30

Qwen3.5-Flash offers 82% better value per quality point. At 1M tokens/day, you'd spend $4.88/month with Qwen3.5-Flash vs $27.30/month with Qwen3.5 Plus 2026-02-15 - a $22.43 monthly difference.

Latency & Speed
Qwen3.5-FlashFaster
Speed score0/100
Qwen3.5 Plus 2026-02-15
Speed score0/100

Both models have comparable response speeds. For most applications, the latency difference is negligible.

When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.

Example Use Cases

Code generation & review

Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring

Qwen3.5-Flash

Customer support chatbot

Suitable for user-facing chat with competitive response times. Qwen3.5-Flash also offers lower per-token costs for high-volume support

Qwen3.5-Flash

Long document analysis

Larger context window (1000K tokens) can process longer documents, contracts, and research papers in a single pass

Qwen3.5-Flash

Batch data extraction

Lower output pricing ($0.26/M) reduces costs when processing thousands of records daily

Qwen3.5-Flash

Creative writing & content

Higher overall composite score (69/100) correlates with better nuance, coherence, and style in long-form content

Qwen3.5-Flash

Image understanding & OCR

Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly

Qwen3.5-Flash
Which Should You Choose?
Our recommendation:
Qwen3.5-Flash

Qwen3.5-Flash and Qwen3.5 Plus 2026-02-15 are extremely close in overall performance (only 0.3999999999999915 points apart). Your best choice depends entirely on which specific strengths matter most for your use case.

Qwen3.5-Flash
Recommended

by Alibaba

  • Choose for Quality - Marginally better benchmark scores; both are excellent
  • Choose for Cost - 82% lower pricing; better value at scale
  • Choose for Reliability - Higher uptime and faster response speeds
  • Choose for Prototyping - Stronger community support and better developer experience
  • Choose for Production - Wider enterprise adoption and proven at scale

by Alibaba

Consider for specialized use cases.

Capability Comparison
CapabilityQwen3.5-FlashQwen3.5 Plus 2026-02-15
Vision (Image Input)
Function Calling
Streaming
JSON Mode
Reasoning
Web Search
Image Output
Monthly Cost Calculator
1,000tokens (600 in / 400 out)
100requests/day (3,000/month)

Qwen3.5-Flash

Alibaba

Best Value
$0.4290
estimated monthly cost

Qwen3.5 Plus 2026-02-15

Alibaba

$2.34
estimated monthly cost

Qwen3.5-Flash saves you $1.91/month

That's 82% cheaper than Qwen3.5 Plus 2026-02-15 at 1,000 tokens/request and 100 requests/day.

Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.

Parameters & Context
ParameterQwen3.5-FlashQwen3.5 Plus 2026-02-15
Context Window1M1M
Max Output Tokens65,53665,536
Open SourceNoNo
CreatedFeb 25, 2026Feb 16, 2026
Last updated: 20m ago

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Qwen3.5-Flash vs Qwen3.5 Plus 2026-02-15 (2026) | LM Market Cap