Models

Qwen3.5 Flash vs Qwen3.8 Max Preview

Compare Qwen3.5 Flash from Qwen and Qwen3.8 Max Preview from Qwen on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.

QwenQwen3.5 FlashQwenQwen3.8 Max Preview
Qwen logo
Qwen3.5 Flash
Qwen · text, image, video → text

The Qwen3.5 native vision-language Flash series models are designed with a hybrid architecture that integrates linear attention mechanisms and sparse mixture-of-experts models, achieving higher inference efficiency. Compared with the 3 series, the models deliver leapfrog improvements in both pure-text and multimodal performance; they respond quickly and combine inference speed with high performance.

Input$0.03 /M
Output$0.28 /M
Qwen logo
Qwen3.8 Max Preview
Qwen · text, image → text

Qwen 3.8 Max Preview(Qwen3.8-Max-Preview) is the latest-generation foundation model in the Qwen family, packing 2.4T parameters and still evolving. Compared with the previous flagship Qwen 3.7 Max, it delivers major gains in core capabilities like Coding and Cowork (professional productivity), with world-leading performance on complex, long-horizon tasks such as full-stack development, data analysis, and Office workflows. Launch offer: Credits are consumed at just 20% of the standard rate, effectively 5× your usage. Limited time only.

Input$0.34 /M
Output$1.01 /M

Pricing & Specifications

Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.

Qwen3.5 Flash
Qwen3.8 Max Preview
Input /M
$0.03
$0.34
Output /M
$0.28
$1.01
Cache read /M
$0.00
$0.03
Context length
991,000
983,616
Max output
64,000
131,072
Time to First Token
0.9 s
2.4 s
Throughput
61.7 tok/s
48.1 tok/s
Modalities
textimagevideo
textimage
Supported Parameters
toolsfunction callingstructured outputsweblong contextthinking
toolsfunction callingstructured outputsweblong contextthinking
API Formats
Released
-
-

Promotional prices show the discounted rate; see each model page for promotion windows.

Activity Past 30 Days

Daily traffic served through AIHubMix — how demand for each model is trending.

qwen3.5-flashqwen3.8-max-preview

Tokens / day

-

Requests / day

-

Performance Past 3 Days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

qwen3.5-flashqwen3.8-max-preview

Throughput (tok/s)

-

TTFT (s)

-

Uptime (%)

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LMArena Benchmarks

LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.

Text
qwen3.5-flashqwen3.8-max-preview
1320140014801560
Overall
13971481
Coding
14371520
Math
14021504
Hard prompts
14161506
Instruction following
13821478
Multi-turn
13961496
Creative writing
13391469
Longer query
14011497
Chinese
14451545
English
14081486
WebDev Arena
qwen3.5-flashqwen3.8-max-preview
1160132014801640
Overall
12381669
React
12241678
HTML
12931628
Gaming
11951733
Simulations
11801665
Data analytics
12281614

Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.

Cost calculator

Estimate your monthly bill for the same workload on each model.

Qwen3.5 Flash
$5.92 /mo
Qwen3.8 Max Preview
$35.49 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

Which is cheaper: Qwen3.5 Flash, Qwen3.8 Max Preview?

Qwen3.5 Flash: $0.28/M output tokens; Qwen3.8 Max Preview: $1.01/M. Use the cost calculator above to estimate your own workload.

How do their coding arena scores compare?

Qwen3.8 Max Preview: 1520; Qwen3.5 Flash: 1437 (LMArena coding leaderboard).

Which responds faster?

Qwen3.5 Flash: 0.9s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.

How large is each context window?

Qwen3.5 Flash accepts 991,000 and Qwen3.8 Max Preview accepts 983,616 input tokens. Maximum output per request is 64,000 tokens on Qwen3.5 Flash and 131,072 tokens on Qwen3.8 Max Preview.

Which one generates tokens faster?

Qwen3.5 Flash at 61.7 tok/s and Qwen3.8 Max Preview at 48.1 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.

What inputs and capabilities does each model support?

Qwen3.5 Flash accepts text, image and video input and supports tool calling, function calling, structured outputs, web search, long context and thinking; Qwen3.8 Max Preview accepts text and image input and supports tool calling, function calling, structured outputs, web search, long context and thinking.

Can I call Qwen3.5 Flash and Qwen3.8 Max Preview with the same API key?

Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.

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