Released on Feb 25, 2026

Qwen3.5 Flash API Benchmarks, Pricing & Provider Data

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Qwen3.5 Flash benchmark, API pricing, and provider data cover 89 API providers, with prices starting at $0.010/request. Qwen3.5 Flash free API options are available from 1 provider. The page also shows measured API speed and first-token latency.

Alibaba Qwen3.5 Flash is a fast multimodal language model in the Qwen series, delivering cost-efficient text, image, and video understanding with a 1M-token context window.

Quality
#82of 100
45.0
LMSpeed score
Speed
115char/s
7.92 s
Cost
$0.010/ 1M · 8:1 in:out
$0.0016 in · $0.0084 out

Category Performance

Observed-capability estimates with uncertainty reported separately from independent benchmark families.

Coverage
1 / 8
Methodology
V3.0
Category PerformanceObserved-capability estimates with uncertainty reported separately from independent benchmark families.Agents-Coding-Reasoning-Knowledge-Math42.7Multilingual-Multimodal-Instruction following-
#1Math42.7Provisional1/4 Measured dimensions
80% interval: 26.758.8
foundational mathPrior only
competition mathPrior only
proof frontier42.7
frontiermath · frontier_math_v2_tier4 / frontiermath · frontier_math_v2_tiers13
applied tool mathPrior only
No data:AgentsCodingReasoningKnowledgeMultilingualMultimodalInstruction following

Specifications

Input and output token limits for this model, plus how it ranks on long-context understanding.

INPUT
1Mtokens
1.2K pages of text
OUTPUT
65.5Ktokens
8K128K1M4M
1M

Features

Technical Details

Input
Output
Released
Feb 2026
Documentation
Tokenizer
Qwen3
Architecture
text+image+video->text
Moderated
No
Supported parameters
include_reasoningmax_tokenspresence_penaltyreasoningresponse_formatseedstructured_outputstemperaturetool_choicetoolstop_p

Rankings

Excels at

Detailed scores

Updated: Aug 20, 2026

Overall

undefined metric} other undefined metrics}}

Overall score45.0#82 / 100
Overall score
LMSpeed rank#82
Score45.0
UpdatedAug 20, 2026
Confidence1

Agents

V3.0

undefined metric} other undefined metrics}} · No data

No data80% interval30.8–69.20/4 Measured dimensions
Dimensions and evidence
Planning & decompositionPrior only
Tool usePrior only
Environment & long-horizon executionPrior only
Recovery & completion reliabilityPrior only

Coding

V3.0

undefined metric} other undefined metrics}} · No data

No data80% interval30.8–69.20/4 Measured dimensions
Dimensions and evidence
Code generationPrior only
Repository engineeringPrior only
Debugging & testingPrior only
Tool-assisted development & qualityPrior only

Reasoning

V3.0

undefined metric} other undefined metrics}} · No data

No data80% interval30.8–69.20/4 Measured dimensions
Dimensions and evidence
Abstract logicPrior only
Scientific & causal reasoningPrior only
Multi-step constraintsPrior only
Evidence integration & verificationPrior only

Knowledge

V3.0

undefined metric} other undefined metrics}} · No data

No data80% interval30.8–69.20/4 Measured dimensions
Dimensions and evidence
Broad knowledgePrior only
Professional knowledgePrior only
FactualityPrior only
Retrieval & open-book usePrior only

Math

V3.0

undefined metric} other undefined metrics}} · Provisional

Score42.780% interval26.7–58.81/4 Measured dimensionsMath score28.5#51 / 62FrontierMath v2 (Tiers 1-3)6.2#35 / 47
Dimensions and evidence
Foundational mathPrior only
Competition mathPrior only
Advanced proofs42.7
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
frontiermath · frontier_math_v2_tier4 · z -1.47 · q 1.00
frontiermath · frontier_math_v2_tiers13 · z -0.90 · q 1.00
Applied & tool-assisted mathPrior only
Math score
LMSpeed rank#51
Score28.5
UpdatedAug 20, 2026
Confidence1
FrontierMath v2 (Tiers 1-3)V3 evidence
LMSpeed rank#35
Score6.2
UpdatedAug 20, 2026
Confidence1

Multilingual

V3.0

undefined metric} other undefined metrics}} · No data

No data80% interval30.8–69.20/4 Measured dimensions
Dimensions and evidence
Cross-language understandingPrior only
Multilingual generationPrior only
Reasoning transferPrior only
Low-resource robustnessPrior only

Multimodal

V3.0

undefined metric} other undefined metrics}} · No data

No data80% interval30.8–69.20/4 Measured dimensions
Dimensions and evidence
Perception & OCRPrior only
Document & spatial understandingPrior only
Visual reasoningPrior only
Video & grounded actionPrior only

Instruction following

V3.0

undefined metric} other undefined metrics}} · No data

No data80% interval30.8–69.20/4 Measured dimensions
Dimensions and evidence
Constraint followingPrior only
Structured outputPrior only
Novel-instruction generalizationPrior only
Multi-turn & long instructionsPrior only

Pricing Comparison

Compare Qwen3.5 Flash API pricing across 88 providers. Prices range from $0.010/request to $150.00/M. 素墨API offers the lowest rate at $0.010/request. 1 provider offers free API credits or a free tier.

ProviderHealthModel VariantGroupInput ($/M)Output ($/M)Speed (t/s)First tokenAudit
L1
100%
qwen3.5-flash
default
$0.014/M
$0.137/M
L1
100%
qwen3.5-flash
bailian
$0.014/M
Cache read$0.0014/M
$0.143/M
L1
100%
qwen3.5-flash
qwen
$0.080/M
$0.800/M
L1
100%
qwen3.5-flash
default
$0.027/M
$0.274/M
L1
100%
qwen3.5-flash
default
$10.27/M
$10.27/M
L1
100%
qwen3.5-flash
国产模型
$0.151/M
$1.51/M
L1
100%
L2
62%
qwen3.5-flash
default
$0.172/M
$1.72/M
L1
100%
qwen3.5-flash
default
$0.014/M
$0.137/M
L1
99%
qwen/qwen3.5-flash
other
$0.042/M
$0.167/M
L1
100%
qwen3.5-flash
default
$0.114/M
Cache read$0.046/MCache write$0.114/MCache write 1h$0.183/M
$1.14/M
L1
99%
qwen3.5-flash
qwen千问
$0.088/M
$0.877/M
L1
100%
qwen3.5-flash
default
$0.012/M
$0.118/M
L1
99%
qwen3.5-flash
default
$0.022/M
$0.219/M
L1
99%
alibaba/qwen3.5-flash
group2
$0.137/M
Cache read$0.014/MCache write$0.178/MCache write 1h$0.285/M
$0.548/M
L1
99%
qwen3.5-flash
default
$0.027/M
$0.274/M
L1
99%
qwen3.5-flash-2026-02-23
default
$36.71/M
$36.71/M
L1
99%
qwen3.5-flash
default
$36.71/M
$36.71/M
L1
100%
qwen3.5-flash-nx
default
$0.010/request
-
L1
99%
qwen3.5-flash
default
$0.025/M
$0.255/M
L1
99%
qwen3.5-flash
default
$0.025/M
$0.255/M
Showing 20 model IDs of 32.

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Frequently Asked Questions

What benchmark data does Qwen3.5 Flash include?
LMSpeed shows Qwen3.5 Flash benchmark context, API price, output speed, first-token latency, and provider data across 89 providers when those signals are available.
What is the Qwen3.5 Flash API price?
Qwen3.5 Flash has pricing from 89 providers, ranging from $0.010/request to $150.00/M. 素墨API has the lowest listed price.
What does the Qwen3.5 Flash API pricing table include?
The Qwen3.5 Flash API pricing table compares 89 providers by input price, output price, free tier status, speed, first-token latency, and recent health data when available.
Which provider has the cheapest Qwen3.5 Flash API pricing?
素墨API currently has the lowest listed Qwen3.5 Flash price at $0.010/request across 89 providers.
Can I compare Qwen3.5 Flash API price and speed together?
Yes. LMSpeed shows Qwen3.5 Flash API price, output speed, first-token latency, and provider health on the same page so you can compare cost and performance together.
Is Qwen3.5 Flash API free?
Yes, Qwen3.5 Flash free API options are available through 1 providerundefined other undefined} on LMSpeed, including Zero API. These providers offer free API credits or a free tier with no per-token charges.
Where can I get Qwen3.5 Flash free API access?
LMSpeed currently lists 1 free API providerundefined other undefined} for Qwen3.5 Flash: Zero API. Check each provider row before using it because free tier limits can change.

Also known as

Qwen3.5-FlashQwen3.5-Flash-fastalibaba/qwen3.5-flashbailian/qwen3.5-flashopenrouter:qwen/qwen3.5-flash-02-23

Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.Standard benchmark data may include BenchLM and other public sources.

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