Qwen · Open weights

Qwen3.8 Flash

Added Aug 26, 2026Open weights

Qwen3.8 Flash is Alibaba's latest fast multimodal model, with a million-token context window for coding, agentic workflows, visual understanding, long documents, codebases, and videos.

Reasoning
Tools
Vision
Structured output
Video input

Input: Text, Images, Video
Output: Text
Reasoning effort: none · high
Discovery tier: Open weights

Pricing

USD per 1M tokens

Input: $0.14
Output: $0.42
Cache read: $0.016
Cache write: $0.20

Reference prices as published by the model provider. API example

Specifications

Context window: 991.8K
Max output: 131.1K

Side by side

Qwen3.8 Flash compared

Specifications, prices, speed and benchmark scores next to each other. Benchmarks below show every compared model too.

Limits
	Qwen3.8 FlashQwenThis model	Qwen3.7 FlashQwenRemove
Provider	Qwen	Qwen
Discovery tier	Open weights	Efficient
Added	Aug 26, 2026	Jul 25, 2026
Context window	991.81K	991.81K
Max output	131.07KBest	65.54K
Pricing, USD per 1M tokens
Input	$0.14	$0.03Best
Output	$0.42	$0.13Best
Cache read	$0.016	$0.006Best
Cache write	$0.20	$0.038Best
Performance
Request success (24h)	96.5%	99.9%Best
Capabilities
Reasoning	Yes	Yes
Tools	Yes	Yes
Vision	Yes	Yes
Structured output	Yes	Yes
Video input	Yes	Yes
Reasoning effort	none, high	none, high

Public evaluations

Benchmarks

There are no public benchmark results for these models yet.

Live routing data

Performance and reliability

Recent averages across requests routed for this model. Your own speed depends on prompt length, reasoning effort and load.

Prompt cache hits: 96.4%; About $0.0205 per 1M input tokens with caching
Request success (24h): 96.5%; Reliable

Cache hits are the share of input tokens recently served from a prompt cache across all requests. They are not a forecast of your own hit rate.

Hourly request success · last 72 hoursLowest hour 77.9%

Healthy (98% or more)
Degraded (90–98%)
Down (under 90%)
No requests

Developers

Use it through the API

Noumen’s API is OpenAI-compatible: any Chat Completions client works with a base URL and a key.

Read the quickstart

curl https://www.noumen.xyz/api/v1/chat/completions \
  -H "Authorization: Bearer $NOUMEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "qwen/qwen3.8-flash",
    "reasoning_effort": "none",
    "messages": [{ "role": "user", "content": "Explain this stack trace." }]
  }'

import os
from openai import OpenAI

client = OpenAI(base_url="https://www.noumen.xyz/api/v1", api_key=os.environ["NOUMEN_API_KEY"])
reply = client.chat.completions.create(
    model="qwen/qwen3.8-flash",
    messages=[{"role": "user", "content": "Explain this stack trace."}],
)
print(reply.choices[0].message.content)

Qwen

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