Qwen3.5 Flash API
Alibaba
Qwen3.5 Flash — ultra-fast Alibaba model with 1M context
About Qwen3.5 Flash
Qwen3.5 Flash is a large language model developed by Alibaba. It's particularly well-suited for orchestrating tool-using agents that call APIs and external services, producing structured outputs for reliable data extraction, and handling large contexts of up to 1M tokens. Its 1M-token context window means you can pass in entire documents, codebases, or conversation histories without losing context. Developers choose Qwen3.5 Flash 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, Qwen3.5 Flash sits among the capable offerings from Alibaba With agentic tool use, it competes with the most capable 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 Qwen3.5 Flash into Cursor, Cline, LangChain, or any framework that speaks the OpenAI protocol and start building immediately.
Qubax offers Qwen3.5 Flash at competitive rates — just $0.105 per million input tokens and $0.420 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.
Pricing
| Token Type | Qubax | OpenRouter | You Save |
|---|---|---|---|
| Input (per 1M tokens) | $0.105 | $0.100 | — |
| Output (per 1M tokens) | $0.420 | $0.400 | -5% |
| Cache read (per 1M tokens) | $0.022 | — | — |
Prices per 1 million tokens. Pay with 200+ cryptocurrencies. Cache read is the discounted rate providers offer for repeated prompt prefixes.
Price History (60 Days)
This model's price over the last 60 days. Compare against all top AI models →
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-flash",
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-flash",
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-flash",
"messages": [{"role": "user", "content": "Hello!"}]
}'Get your API key from the dashboard.
Why use Qwen3.5 Flash on Qubax?
Best Prices
Up to 99% 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 Qwen3.5 Flash with alternatives
| Model | Provider | Input / 1M | Output / 1M | vs Qwen3.5 Flash |
|---|---|---|---|---|
| Qwen3.5 Flash | Alibaba | $0.105 | $0.420 | — |
| DeepSeek V4 Flash (Morpheus Web) | DeepSeek | $0.128 | $0.263 | More expensive |
| GPT-5.4 Image 2 | OpenAI | $0.120 | $0.225 | More expensive |
| Mistral Small 3.2 24B Instruct (Morpheus Web) | Mistral AI | $0.070 | $0.188 | Cheaper |
| Seed 2.1 Turbo | Other | $0.188 | $0.938 | More expensive |
Frequently Asked Questions
How much does the Qwen3.5 Flash API cost?
On Qubax, Qwen3.5 Flash costs $0.105 per 1M input tokens and $0.420 per 1M output tokens.
Is the Qwen3.5 Flash API compatible with OpenAI?
Yes. Qubax provides an OpenAI-compatible API. You can use Qwen3.5 Flash 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.
How do I pay for Qwen3.5 Flash API usage?
Qubax uses prepaid crypto credits. Deposit USDC on the Base chain and your balance is automatically deducted as you use the API. No credit card required. Top up from $3.
What is the context window of Qwen3.5 Flash?
Qwen3.5 Flash supports a context window of 1M tokens, allowing you to process large documents, codebases, or long conversations in a single request.
What can I build with Qwen3.5 Flash?
Qwen3.5 Flash is versatile enough for a wide range of applications. You can use it to build autonomous agents that call external tools and APIs, generate structured JSON output for data pipelines, 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 Qwen3.5 Flash on Qubax?
Qwen3.5 Flash 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 an intelligent routing layer, which selects the fastest available compute provider for each request — so you get competitive latency at a lower price.
Qwen3.5 Flash vs DeepSeek V4 Flash (Morpheus Web): which should I choose?
Qwen3.5 Flash by Alibaba and DeepSeek V4 Flash (Morpheus Web) by DeepSeek are both strong models in a similar price tier. Qwen3.5 Flash is well-suited for general-purpose language tasks. DeepSeek V4 Flash (Morpheus Web) comes from a different lab and may have different strengths depending on your workload. On Qubax, Qwen3.5 Flash starts at $0.105/1M input tokens versus DeepSeek V4 Flash (Morpheus Web)'s $0.128/1M — making Qwen3.5 Flash the more cost-effective option for high-volume workloads. Both are available on Qubax with crypto payments and OpenAI-compatible APIs, so you can try each and switch freely.
Can I use Qwen3.5 Flash for commercial projects?
Yes. Qwen3.5 Flash 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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