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Language modelAPI only

Qwen 3.8 Flash

Alibaba

Released
August 26, 2026
Data date
September 8, 2026
Benchmark-Meta-Score
Unavailable
No independent results
Speed
73.4 tokens/s
Output throughput
Price
Input · Output / 1M tokens
Input
Text, Image, Video
Output
Text

What distinguishes Qwen 3.8 Flash is the combination of multimodal input and a 1,000,000-token window in an API. Alibaba documents text, images, and video as inputs and text as output. In Thinking mode, the API exposes up to 262,144 tokens of chain of thought.

The open Qwen 3.8 Flash Next variant uses a different architecture. Alibaba lists 125 billion parameters in the main model, 51 billion additional N-gram embedding parameters, and 6 billion active parameters per token. The provider serves its production 1M-context version as Qwen 3.8 Flash on QwenCloud.

Specifications and access

SpecificationValue and source
Weights
ProprietarySource
Access
Parameters
125BSource
Active parameters
Context window
1,000,000 tokensSource
Notes
Multimodal QwenCloud API model with deep thinking, visual understanding, and 1M-token context. Alibaba's official announcement lists a 125B main model, additional 51B N-gram embeddings, and 6B active parameters per token for Qwen3.8-Flash-Next. The production variant is served as Qwen3.8-Flash on QwenCloud.Source
API model ID
qwen3.8-flashSource
API interfaces
QwenCloud OpenAI Chat Completions, QwenCloud OpenAI Responses, QwenCloud AnthropicSource
Input
Text, Image, VideoSource
Output
TextSource
Reasoning mode
thinking by default; controllableSource
Tool calling
Structured output
Maximum context window
1,000,000 tokensSource
Maximum output
65,536 tokensSource
Release
2026-08-26Source
Parameters
125 BSource
Active parameters
Maximum images
2,048Source
Maximum videos
Video limit
2 hours / 2 GBSource
Architecture
hybrid Qwen3.5-style MoE with n-gram embedding module; 125B main model plus 51B N-gram embeddings and 6B active parameters per tokenSource
Native context window
262,144 tokens (API context is 1M by default; native/base context is separately recorded.)Source