Model comparison

Qwen3.5-Flash vs Qwen3.7 Flash

Qwen3.5-Flash is the stronger model overall, scoring 42.3 to 39.5 on the Noometry Index. Qwen3.7 Flash costs 3.2× less per token, which makes it the better buy when Qwen3.5-Flash's lead doesn't matter for your workload.

Last verified October 10, 2026. 6 shared benchmarks.

Qwen3.5-Flash

Alibaba (Qwen)

42.3

Rank #105 Confirmed

Qwen3.7 Flash

Alibaba (Qwen)

39.5

Rank #152 Confirmed

Summary

They share 6 benchmarks with published results for both. Qwen3.5-Flash scores higher in 1 category and Qwen3.7 Flash in 2 categories; 2 gaps are clear of the uncertainty.
The widest gap is in knowledge, where Qwen3.7 Flash leads 48.9 to 43.2.
The biggest single-benchmark swing is Mystery Game Puzzles: 20% for Qwen3.5-Flash and 15% for Qwen3.7 Flash.
Qwen3.7 Flash is cheaper at $0.03 / $0.13 per million input/output tokens, against $0.10 / $0.40 for Qwen3.5-Flash.

Side by side

Qwen3.5-Flash and Qwen3.7 Flash specifications
	Qwen3.5-Flash	Qwen3.7 Flash
Provider	Alibaba (Qwen)	Alibaba (Qwen)
Noometry Index	42.3	39.5
Released	2026-02-23	2026-07-15
Weights	Proprietary	Proprietary
Context window	1M	1M
Max output	66K	131K
Input $ / M tokens	$0.10	$0.03
Output $ / M tokens	$0.40	$0.13
Results tracked	32	7

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Category by category

Coding Not comparable

Qwen3.5-Flash: 33.9 (#234), Qwen3.7 Flash: —

Coding benchmarks
Benchmark	Qwen3.5-Flash	Qwen3.7 Flash
LMArena WebDev	1243	—
LMArena Coding	1412	—
ALE-Bench	221.8	—

Agentic & Tool Use Not comparable

Qwen3.5-Flash: —, Qwen3.7 Flash: —

Agentic & Tool Use benchmarks
Benchmark	Qwen3.5-Flash	Qwen3.7 Flash
Vending-Bench 2	462.69	—

Reasoning Qwen3.5-Flash leads

Qwen3.5-Flash: 32.9 (#63), Qwen3.7 Flash: 27.3 (#108)

Reasoning benchmarks
Benchmark	Qwen3.5-Flash	Qwen3.7 Flash
Chess Puzzles	21%	23%
Mystery Game Puzzles	20%	15%
Epoch Capabilities Index	143.98	144.62
NYT Connections (extended)	—	43.8%
LMArena Hard Prompts	1404	—
DTBench	82.9%	—
LMCA	29.1%	—

Math Too close to call

Qwen3.5-Flash: 36.3 (#117), Qwen3.7 Flash: 37.3 (#100)

Math benchmarks
Benchmark	Qwen3.5-Flash	Qwen3.7 Flash
FrontierMath (Tiers 1-3)	18.2%	19.3%
OTIS Mock AIME 2024-2025	84.4%	86.7%
LMArena Math	1407	—
FrontierMath (Feb 2025 set)	6.2%	—
FrontierMath Tier 4 (v1)	0%	—

Knowledge Qwen3.7 Flash leads

Qwen3.5-Flash: 43.2 (#84), Qwen3.7 Flash: 48.9 (#69)

Knowledge benchmarks
Benchmark	Qwen3.5-Flash	Qwen3.7 Flash
GPQA Diamond	82.3%	82.3%
SimpleQA Verified	20.3%	—
Vectara Hallucination Rate	10.5%	—
LMArena Expert	1408	—

Multilingual Not comparable

Qwen3.5-Flash: 50.7 (#116), Qwen3.7 Flash: —

Multilingual benchmarks
Benchmark	Qwen3.5-Flash	Qwen3.7 Flash
LMArena Non-English	1385	—
LMArena Chinese	1446	—
LMArena French	1412	—
LMArena German	1389	—
LMArena Japanese	1369	—
LMArena Korean	1344	—
LMArena Russian	1379	—
LMArena Spanish	1399	—

Instruction Following Not comparable

Qwen3.5-Flash: 72.8 (#133), Qwen3.7 Flash: —

Instruction Following benchmarks
Benchmark	Qwen3.5-Flash	Qwen3.7 Flash
LMArena Instruction Following	1374	—

Long Context Not comparable

Qwen3.5-Flash: 42.4 (#119), Qwen3.7 Flash: —

Long Context benchmarks
Benchmark	Qwen3.5-Flash	Qwen3.7 Flash
LMArena Longer Query	1392	—

Writing & Preference Not comparable

Qwen3.5-Flash: 58.2 (#117), Qwen3.7 Flash: —

Writing & Preference benchmarks
Benchmark	Qwen3.5-Flash	Qwen3.7 Flash
LMArena Text	1397	—
LMArena Creative Writing	1343	—
LMArena Multi-Turn	1393	—

Frequently asked questions

Is Qwen3.5-Flash better than Qwen3.7 Flash?

Which is cheaper, Qwen3.5-Flash or Qwen3.7 Flash?

Qwen3.7 Flash is cheaper. It lists at $0.03 per million input tokens and $0.13 per million output tokens; Qwen3.5-Flash lists at $0.10 and $0.40.

Which has the bigger context window?

Both accept 1M tokens.

How many benchmarks do Qwen3.5-Flash and Qwen3.7 Flash share?

6 benchmarks have published results for both models. Qwen3.5-Flash has 32 scored results on Noometry and Qwen3.7 Flash has 7.