Qwen · Open weights

Qwen 3.8 27B Swift

Added Oct 5, 2026Open weights

Qwen 3.8 27B Swift is a finetune for fast responses, served by Aoru in NVFP4 with a 262,144-token context window. It supports image understanding, tool calling, and optional reasoning.

Reasoning
Tools
Vision

Input: Text, Images
Output: Text
Discovery tier: Open weights

Pricing

USD per 1M tokens

Input: $0.10
Output: $0.60
Cache read: $0.05

Reference prices as published by the model provider. API example

Specifications

Context window: 262.1K
Max output: 32.8K
Average output (7 days): 158 tokens; Longer than 15% of 468 models

Side by side

Qwen 3.8 27B Swift compared

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

Limits
	Qwen 3.8 27B SwiftQwenThis model	Qwen 3.8 27B NovelistQwenRemove
Provider	Qwen	Qwen
Discovery tier	Open weights	Open weights
Added	Oct 5, 2026	Oct 5, 2026
Context window	262.14K	262.14K
Max output	32.77K	32.77K
Average output	158 tokens	745 tokens
Pricing, USD per 1M tokens
Input	$0.10	$0.10
Output	$0.60	$0.60
Cache read	$0.05	$0.05
Performance
Throughput	41.8 tok/sBest	35.0 tok/s
Time to first token	1.7 sBest	3.1 s
Request success (24h)	90.9%	98.2%Best
Capabilities
Reasoning	Yes	Yes
Tools	Yes	Yes
Vision	Yes	Yes
Reasoning effort	—	—

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.

Throughput: 41.8 tok/s; Faster than 30% of 254 models
Time to first token: 1.7 s; Quicker than 86% of 254 models
Prompt cache hits: 85.1%; About $0.0574 per 1M input tokens with caching
Request success (24h): 90.9%; Unstable

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 33.3%

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/qwen3.8-27b-swift",
    "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/qwen3.8-27b-swift",
    messages=[{"role": "user", "content": "Explain this stack trace."}],
)
print(reply.choices[0].message.content)

Qwen

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