Qwen 3.5 9B API
Alibaba
Qwen 3.5 9B
About Qwen 3.5 9B
Qwen 3.5 9B is a large language model developed by Alibaba. It's particularly well-suited for tackling complex, multi-step reasoning problems, orchestrating tool-using agents that call APIs and external services, and handling large contexts of up to 256K tokens. Its 256K-token context window means you can pass in entire documents, codebases, or conversation histories without losing context. Developers choose Qwen 3.5 9B when they need reliable, production-quality AI inference through a simple API — and on Qubax, it's available at a fraction of the cost of traditional providers.
In the broader AI landscape, Qwen 3.5 9B sits among the frontier-tier offerings from Alibaba With advanced reasoning and agentic tool use, it competes with the most frontier-tier models on the market. What sets it apart on Qubax isn't just the model itself — it's the accessibility. Rather than dealing with enterprise contracts or traditional payment rails, you get instant access via an OpenAI-compatible endpoint. That means you can drop Qwen 3.5 9B into Cursor, Cline, LangChain, or any framework that speaks the OpenAI protocol and start building immediately.
Qubax offers Qwen 3.5 9B at 3% below OpenRouter's price — just $0.049 per million input tokens and $0.145 per million output tokens. That pricing advantage compounds quickly at scale: a high-volume application sending millions of tokens per day can save significantly compared to using OpenRouter or the provider directly. And because Qubax runs on crypto-native infrastructure, you can pay with USDC, USDT, ETH, BTC, or 200+ other cryptocurrencies — no credit card or bank account required. New users even get $1 in free credits to test Qwen 3.5 9B risk-free before committing.
Pricing
| Token Type | Qubax | OpenRouter | You Save |
|---|---|---|---|
| Input (per 1M tokens) | $0.049 | $0.050 | 3% |
| Output (per 1M tokens) | $0.145 | $0.150 | 3% |
Prices per 1 million tokens. Pay with 200+ cryptocurrencies.
Estimated Monthly Cost
Specifications
Use Cases
Capabilities
Quick Start
from openai import OpenAI
client = OpenAI(
base_url="https://api.qubax.ai/v1",
api_key="qbx_live_YOUR_API_KEY",
)
response = client.chat.completions.create(
model="qwen3-5-9b",
messages=[
{"role": "user", "content": "Hello!"}
],
)
print(response.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api.qubax.ai/v1",
apiKey: "qbx_live_YOUR_API_KEY",
});
const response = await client.chat.completions.create({
model: "qwen3-5-9b",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);curl https://api.qubax.ai/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer qbx_live_YOUR_API_KEY" \
-d '{
"model": "qwen3-5-9b",
"messages": [{"role": "user", "content": "Hello!"}]
}'Get your API key from the dashboard. New users get $1 free credits.
Why use Qwen 3.5 9B on Qubax?
3% Cheaper
Up to 3% off OpenRouter prices
Pay with Crypto
200+ coins (BTC, ETH, SOL, USDT, USDC & more). No credit card needed.
OpenAI Compatible
Drop-in replacement. Works with Cline, Cursor, any tool.
More from Alibaba
Compare Qwen 3.5 9B with alternatives
| Model | Provider | Input / 1M | Output / 1M | vs Qwen 3.5 9B |
|---|---|---|---|---|
| Qwen 3.5 9B | Alibaba | $0.049 | $0.145 | — |
| DeepSeek V4 Flash (Morpheus Web) | DeepSeek | $0.033 | $0.068 | Cheaper |
| Trinity Large Thinking (Morpheus Web) | Other | $0.041 | $0.146 | Cheaper |
| GLM 4.5 | Zhipu AI | $0.078 | $0.286 | More expensive |
| Mistral Small 3.2 24B Instruct (Morpheus Web) | Mistral AI | $0.024 | $0.065 | Cheaper |
Frequently Asked Questions
How much does the Qwen 3.5 9B API cost?
On Qubax, Qwen 3.5 9B costs $0.049 per 1M input tokens and $0.145 per 1M output tokens. This is 3% cheaper than OpenRouter's price of $0.050 per 1M input tokens.
Is the Qwen 3.5 9B API compatible with OpenAI?
Yes. Qubax provides an OpenAI-compatible API. You can use Qwen 3.5 9B as a drop-in replacement by changing your base URL to https://api.qubax.ai/v1 and using your Qubax API key. It works with Cline, Cursor, OpenCode, Hermes Agent, and any tool that supports OpenAI APIs.
Why is Qwen 3.5 9B cheaper on Qubax than OpenRouter?
Qubax sources AI inference from the Surplus Intelligence marketplace, an open marketplace on the Base blockchain where compute providers compete on price. We pass the savings to you — 3% cheaper than OpenRouter's price for Qwen 3.5 9B.
How do I pay for Qwen 3.5 9B API usage?
Qubax uses prepaid crypto credits. Deposit USDC on the Base chain and your balance is automatically deducted as you use the API. New users get $1 in free credits to start. No credit card required.
What is the context window of Qwen 3.5 9B?
Qwen 3.5 9B supports a context window of 256K tokens, allowing you to process large documents, codebases, or long conversations in a single request.
What can I build with Qwen 3.5 9B?
Qwen 3.5 9B is versatile enough for a wide range of applications. You can use it to tackle complex multi-step reasoning tasks, build autonomous agents that call external tools and APIs, process long documents and entire codebases, and more. Because it's served through Qubax's OpenAI-compatible API, integration into existing apps, agents, or workflows takes just a few lines of code.
How fast is Qwen 3.5 9B on Qubax?
Qwen 3.5 9B on Qubax supports streaming responses, so tokens begin arriving in real time as they're generated. Latency depends on the provider and prompt complexity, but most requests start streaming within 200–800 milliseconds. Qubax routes requests through the Surplus Intelligence marketplace, which selects the fastest available compute provider for each request — so you get competitive latency at a lower price.
Qwen 3.5 9B vs DeepSeek V4 Flash (Morpheus Web): which should I choose?
Qwen 3.5 9B by Alibaba and DeepSeek V4 Flash (Morpheus Web) by DeepSeek are both strong models in a similar price tier. Qwen 3.5 9B excels at complex reasoning. DeepSeek V4 Flash (Morpheus Web) comes from a different lab and may have different strengths depending on your workload. On Qubax, Qwen 3.5 9B starts at $0.049/1M input tokens while DeepSeek V4 Flash (Morpheus Web) comes in at $0.033/1M, so DeepSeek V4 Flash (Morpheus Web) may be worth considering if you need to minimize per-token cost. Both are available on Qubax with crypto payments and OpenAI-compatible APIs, so you can try each and switch freely.
Can I use Qwen 3.5 9B for commercial projects?
Yes. Qwen 3.5 9B on Qubax can be used for commercial purposes. You own the outputs you generate. Qubax provides the API infrastructure — you bring your use case.
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