Qwen3.5-Flash API
The most affordable Qwen model. Excellent for high-volume, cost-sensitive applications with 1M context.
💰 Save up to 70% vs official Alibaba pricingQwen3.5-Flash — cheaper than the official Alibaba API
Access Qwen3.5-Flash through AI API Hub and pay less per token. Same OpenAI-compatible endpoint, lower cost.
Technical Specifications
| Provider | Alibaba |
| Model Family | Qwen3.5-Flash |
| Release Date | 2026-05 |
| Context Window | 1M |
| Max Output Tokens | 65,536 |
| Input Price | $0.10 / 1M tokens |
| Output Price | $0.40 / 1M tokens |
| Vision Support | No |
| Function Calling | No |
| JSON Mode | No |
| Streaming | Yes ✓ |
| Fine Tuning | Not Available |
| Status | Active ✓ |
Overview
Qwen3.5-Flash is Alibaba's current qwen model, released in 2026-05. The most affordable Qwen model. Excellent for high-volume, cost-sensitive applications with 1M context.
For developers, the headline numbers are a 1M context window and up to 65,536 output tokens per response — enough headroom for ultra-low cost and 1m context without chunking your input. Priced at $0.10/1M input and $0.40/1M output, it sits in the budget tier — ideal for high-volume pipelines where token cost dominates.
On the capability side, Qwen3.5-Flash exposes 3 features: Multilingual, Code, Streaming. Note that fine-tuning isn't supported — you'll work with the base model. It's text-only, so route image or audio workloads elsewhere.
The practical appeal of routing Qwen3.5-Flash through AI API Hub is simplicity: one OpenAI-compatible endpoint, USDT & USDC payments, no credit card, and you're calling the API in under 30 seconds — just swap your base URL.
What Makes Qwen3.5-Flash Different
How Qwen3.5-Flash is used
Qwen3.5-Flash is used for code completion, inline suggestions, test generation, and bulk refactoring. It's tuned for low-latency developer-facing workflows. For reasoning-heavy or multi-step architecture decisions, consider a reasoning-tuned sibling model.
Pricing position within Alibaba
Qwen3.5-Flash sits in the middle of Alibaba's pricing at $0.10/1M input — 78% below the lineup average ($0.07 cheapest, $1.20 most expensive). 1 sibling cost less, 4 cost more. This mid-tier positioning makes it a sensible default when you're unsure which variant to pick.
Qwen3.5-Flash's role in the lineup
Within Alibaba's lineup, Qwen3.5-Flash is a mid-tier option — balanced between cost and capability. The qwen family has 6 active variants, and Qwen3.5-Flash occupies the lower end. This makes it a safe default for production workloads where you're not sure which tier to pick.
Real-world use cases
Real-world deployments: inline code completion in IDEs, automated test generation, bulk code refactoring pipelines, and code review bots. Qwen3.5-Flash is tuned for low-latency developer workflows where response speed matters as much as code quality.
vs sibling models
What makes Qwen3.5-Flash different from sibling models: compared to Qwen3-Max ($1.10/1M more expensive, 252K vs 1M context (smaller)); Qwen3.5-Plus ($0.30/1M more expensive, same 1M context); Qwen3-Coder-Plus ($0.55/1M more expensive, same 1M context). Choose Qwen3.5-Flash when code generation is the primary task.
API Examples
Python
from openai import OpenAI
client = OpenAI(
api_key="YOUR_API_KEY",
base_url="https://api.apiyihe.org/v1"
)
response = client.chat.completions.create(
model="qwen3.5-flash",
messages=[
{"role": "user", "content": "Hello"}
]
)
print(response.choices[0].message.content)JavaScript / Node.js
import OpenAI from "openai";
const client = new OpenAI({
apiKey: process.env.API_KEY,
baseURL: "https://api.apiyihe.org/v1"
});
const response = await client.chat.completions.create({
model: "qwen3.5-flash",
messages: [
{ role: "user", content: "Hello" }
]
});
console.log(response.choices[0].message.content);cURL
curl https://api.apiyihe.org/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{
"model": "qwen3.5-flash",
"messages": [
{"role": "user", "content": "Hello"}
]
}'Supported Features
| Vision / Image Input | ❌ Not Available |
| Audio / Voice Input | ❌ Not Available |
| Function Calling | ❌ Not Available |
| JSON Mode | ❌ Not Available |
| Streaming | ✅ Supported |
| Fine-Tuning | ❌ Not Available |
| Multimodal | ❌ Not Available |
Benchmark Scores
| Benchmark | Score |
|---|---|
| MMLU | Not Publicly Available |
| GPQA | Not Publicly Available |
| SWE-Bench | Not Publicly Available |
| HumanEval | Not Publicly Available |
| GSM8K | Not Publicly Available |
| MATH | Not Publicly Available |
| MMMU | Not Publicly Available |
Pricing History
Qwen3.5-Flash was released in 2026-05 by Alibaba and is currently publicly available via AI API Hub.
Current Pricing: $0.10 per 1M input tokens · $0.40 per 1M output tokens. Pay-as-you-go with no minimum commitment.
Pricing Model: Token-based billing (pay per use). No subscription fees. No hidden costs.
💡 Alibaba occasionally updates pricing. AI API Hub reflects current pricing in real-time. All prices in USD. Pay with USDT or USDC — no currency conversion fees.
Compare Alternatives
Frequently Asked Questions
What is Qwen3.5-Flash?
Qwen3.5-Flash is Alibaba's current qwen model. The most affordable Qwen model. Excellent for high-volume, cost-sensitive applications with 1M context. It offers a 1M context window and supports Multilingual, Code, Streaming. You can access it through AI API Hub using USDT or USDC — no credit card required.
How much does Qwen3.5-Flash cost?
Qwen3.5-Flash is priced at $0.10 per 1M input tokens and $0.40 per 1M output tokens, billed pay-as-you-go with no minimum. Through AI API Hub you can start with as little as $5 and scale from there.
Qwen3.5-Flash vs GPT-5.5?
They're built for different jobs. Qwen3.5-Flash costs $0.10/1M input with a 1M window; GPT-5.5 runs $5.00/1M input with 256K. Qwen3.5-Flash is the more cost-effective pick and still brings ultra-low cost. See the full side-by-side at /compare/qwen3.5-flash-vs-gpt-5.5/.
Qwen3.5-Flash context window?
Qwen3.5-Flash has a 1M context window, capable of processing up to 1,048,576 tokens in a single request. Maximum output tokens: 65,536.
Does Qwen3.5-Flash support function calling?
No, Qwen3.5-Flash does not natively support function calling. For function calling use cases, consider Alibaba's flagship models.
Is Qwen3.5-Flash multimodal?
No, Qwen3.5-Flash is a text-only model. For multimodal use cases, consider models with vision/audio capabilities.
Qwen3.5-Flash API rate limits?
Qwen3.5-Flash rate limits: 10K RPM. Higher tier plans offer increased throughput. For high-volume production use, consider Alibaba's faster variant models.
How to access Qwen3.5-Flash API?
Access Qwen3.5-Flash through AI API Hub: (1) Register at api.apiyihe.org/register?aff=8JZC, (2) Deposit USDT/USDC, (3) Get your API key instantly, (4) Use the OpenAI-compatible endpoint https://api.apiyihe.org/v1 with model name "qwen3.5-flash". Start building in under 30 seconds.