Qwen3.8-Flash

Save 30%Relay

qwen/qwen3.8-flash

Qwen3.8-Flash — Alibaba's fast, low-cost Qwen model with a 1M-token context.

Get an API key View code sample

Context window: 1M
Max output: 128K
Input modalities: text · image
Output modalities: text
Capabilities: Vision · Reasoning · Tool calling · Coding · Prompt cache · Paid cache writes
Upstream release: 2026-08-26
RouteMux name: qwen/qwen3.8-flash

Live model playground

Try Qwen3.8-Flash here

Tune the request, see the current price ceiling, and inspect the real response without leaving this model page.

streamchat

1Configure input

Prompt

0 / 20,000

Add images

Maximum estimated cost—

2Live result

Your result will appear here

Enter an input on the left. The same RouteMux Playground execution and billing path powers this embedded test.

Qwen3.8-Flash API pricing

Prices verified 2026-10-20

InputOfficial $0.15 / M tokens

$0.105/ M tokensSave 30%

OutputOfficial $0.47 / M tokens

$0.329/ M tokensSave 30%

Cache read $0.0112/M · Cache write $0.13125/M

Estimate cost

Input tokensOutput tokens

Estimated cost$0.001379

Limited time10% extra Credits on your first top-up — up to 200 bonus Credits

Applies to your first top-up within 72 hours of signing up. Minimum $20, once per account.

Key capabilities

VisionReasoningTool callingCodingPrompt cachePaid cache writes

Interface and protocols

OpenAI Chat CompletionsStreamingOpenAI ResponsesStreamingAnthropic MessagesStreaming

Use any of these IDs to call this model via the API.

RouteMux nameqwen/qwen3.8-flash

Replace the ROUTEMUX_KEY placeholder with your API key. Create one →

from openai import OpenAI

client = OpenAI(
    base_url="https://api.routemux.com/v1",
    api_key="<ROUTEMUX_KEY>",
)

completion = client.chat.completions.create(
    model="qwen/qwen3.8-flash",
    messages=[{"role": "user", "content": "What is the meaning of life?"}],
)
print(completion.choices[0].message.content)

base_url: https://api.routemux.com/v1

Performance (last 30 days)

0 requests · last 30 days

Total usage—

P50 first-token latencyInsufficient data (0 requests)

Avg throughputInsufficient data (0 requests)

Success rate100.0%

Uptime · 24htested via openai_chat

100.00%

Qwen3.8-Flash FAQ

›What is Qwen3.8-Flash?

Qwen3.8-Flash — Alibaba's fast, low-cost Qwen model with a 1M-token context.

›How large is the context window of Qwen3.8-Flash?

Qwen3.8-Flash supports a context window of up to 1M tokens, with up to 128K output tokens per request.

›How much does the Qwen3.8-Flash API cost?

Through RouteMux, Qwen3.8-Flash costs $0.105 for input and $0.329 for output (USD per 1M tokens), below the official list price.

›How do I call Qwen3.8-Flash via API?

Qwen3.8-Flash is OpenAI-compatible: point your base URL at RouteMux and set the model field to qwen/qwen3.8-flash — no code changes needed.

›Which input and output modalities does Qwen3.8-Flash support?

Qwen3.8-Flash accepts text, image as input and produces text as output.

›When was Qwen3.8-Flash released?

Qwen3.8-Flash was released on August 26, 2026.

View as Markdown