Qwen 3.5 9B
Access Qwen 3.5 9B through one API key. Cheapest model for high-volume tasks.
Alibaba's smallest and cheapest model. Ideal for high-volume classification, extraction, and simple tasks.
No credit card required. Takes 30 seconds.
2,400+
Developers
1.2M+
API calls served
100+
Endpoints
$0.01
Per call
Yep, that's it.
Try it live
Send a message and see Qwen 3.5 9B respond in real time.
Maximum tokens in the response.
Real-time tokens
Context Window
256K tokens
Max Output
33K tokens
Input Price
$0.07 / 1M tokens
Output Price
$0.21 / 1M tokens
Strengths
At $0.07 per 1M input and $0.21 per 1M output tokens, this is the lowest-priced model in the Qwen 3.5 line, built for tasks where per-call cost matters more than peak reasoning depth.
Its compact 9-billion-parameter size returns responses quickly, making it suitable for interactive UIs and real-time classification where wait time is visible to users.
The small footprint sustains large batches of concurrent requests, ideal for processing millions of records, tickets, or documents per day.
A 256,000-token context window lets even this budget model read long inputs in one request, with up to 32,768 output tokens per response.
Quick start
Copy this snippet and start making calls with Qwen 3.5 9B.
const res = await fetch('https://api.yepapi.com/v1/ai/chat', {
method: 'POST',
headers: {
'x-api-key': 'YOUR_API_KEY',
'Content-Type': 'application/json',
},
body: JSON.stringify({
"model": "qwen/qwen3.5-9b",
"messages": [
{
"role": "user",
"content": "Explain API gateways in 2 sentences."
}
],
"maxTokens": 256
}),
});
const { data } = await res.json();
console.log(data.message.content);Why use Qwen 3.5 9B through YepAPI?
Qwen 3.5 9B API: the cheapest Qwen for high-volume tasks
Qwen 3.5 9B is Alibaba's smallest and most affordable Qwen 3.5 model, tuned for the high-volume, low-complexity work that dominates real production systems: classification, extraction, routing, and simple generation.
Through YepAPI you access Qwen 3.5 9B on one OpenAI-compatible endpoint at $0.07 per 1M input and $0.21 per 1M output tokens, with a 256,000-token context window.
What is Qwen 3.5 9B?
Qwen 3.5 9B is the entry-level model in Alibaba's Qwen 3.5 family, a 9-billion-parameter network designed to run fast and cheap. It is not meant to compete with frontier reasoning models; instead it targets the large share of production work that is simple but high in volume, such as labeling support tickets, extracting fields from text, or generating short responses. Despite its size it carries a 256,000-token context window and up to 32,768 output tokens, so it can still handle long inputs. Its low latency and low price make it the default choice when you need to process many items at once.
Build with Qwen 3.5 9B via YepAPI
Use Qwen 3.5 9B through YepAPI's OpenAI-compatible /v1/ai/chat endpoint. Set the model string to qwen-3.5-9b in your existing OpenAI SDK setup and you are running; moving to a larger model later is a one-string change. A single YepAPI key also reaches every other model on the platform plus SEO, SERP, and scraping tools, so a pipeline can scrape pages, classify them with 9B, and escalate hard cases to a bigger model, all on one integration.
Qwen 3.5 9B API pricing — $0.07 / $0.21 per 1M tokens
Qwen 3.5 9B is priced at $0.07 per 1M input tokens and $0.21 per 1M output tokens, the cheapest tier in the Qwen 3.5 range on YepAPI. At those rates you can classify or extract from millions of records for a few dollars, which makes it the natural first stage in tiered pipelines: handle the easy majority cheaply with 9B, then route only ambiguous cases to a costlier model.
Qwen 3.5 9B for high-volume classification and extraction
Qwen 3.5 9B shines on bulk, repetitive tasks: tagging support tickets, sentiment scoring, intent detection, entity extraction, and short-form generation. Its low latency keeps interactive features responsive, and its high throughput lets you push large batches without queue backups. The 256K context window means it can still summarize or extract from long documents when needed, so a single cheap model covers a wide band of routine workloads.
Try Qwen 3.5 9B free
Start with $5 in free YepAPI credit, no card needed. Given Qwen 3.5 9B's rock-bottom pricing, that credit covers a very large test batch, so you can validate accuracy on your own classification or extraction data before scaling up.
Start generating in 30 seconds
$5 free credit on signup. No credit card required. Pay per call.
What developers say
“Switched from SerpAPI and cut our SERP costs by 80%. Same data quality, way simpler billing.”
“One API key for AI models, SERP data, and web scraping. Saved us from managing 4 separate providers.”
“The $5 free credit let us prototype our entire rank tracking feature before committing. No other API does that.”
Frequently asked questions
Alibaba's smallest and cheapest model. Ideal for high-volume classification, extraction, and simple tasks.
Input tokens cost $0.07 per 1M tokens and output tokens cost $0.21 per 1M tokens through YepAPI. No monthly minimums — you only pay for what you use.
Sign up for a free API key, then send requests to the /v1/ai/chat endpoint.
Qwen 3.5 9B supports a 256K token context window with up to 33K output tokens per request.
Ready to use Qwen 3.5 9B?
$5 free credit on signup. No credit card required. Pay per call.
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