# Qwen3.5 9B API Pricing

As of October 10, 2026, Qwen3.5 9B costs $0.10 per 1M input tokens and $0.15 per 1M output tokens from DeepInfra, the lowest of 2 providers. It has a 262,144-token context window.

- Page: https://models.litellm.ai/models/qwen3.5-9b
- Lab: Alibaba
- LiteLLM model name: `deepinfra/Qwen/Qwen3.5-9B`
- Context window: 262,144 tokens
- Added to LiteLLM: August 25, 2026
- Prices updated: October 10, 2026

## Pricing by provider

Token prices in USD per 1M tokens.

| Provider | Model name | Input | Output | Cache read | Per image | Per second | Context |
|---|---|---|---|---|---|---|---|
| DeepInfra | `deepinfra/Qwen/Qwen3.5-9B` | $0.10 | $0.15 | – | – | – | 256K |
| Together AI | `together_ai/Qwen/Qwen3.5-9B` | $0.17 | $0.25 | – | – | – | 256K |

## Cost examples

1,000 requests with 2,000 input and 500 output tokens each:

- DeepInfra: $0.275
- Together AI: $0.465

100 long-document requests with 100,000 input and 2,000 output tokens each:

- DeepInfra: $1.03
- Together AI: $1.75

## Features

Supported: Function calling, Parallel tool calls, Structured output, Image input, Reasoning.

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="deepinfra/Qwen/Qwen3.5-9B",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## FAQ

### How much does Qwen3.5 9B cost?

Qwen3.5 9B costs $0.10 per 1M input tokens and $0.15 per 1M output tokens from DeepInfra, the lowest of 2 providers.

### What is the context window of Qwen3.5 9B?

Qwen3.5 9B has a 262,144-token context window.

### Which providers offer Qwen3.5 9B?

Qwen3.5 9B is available from 2 providers through LiteLLM: DeepInfra and Together AI. The lowest price is on DeepInfra.

### How do I call Qwen3.5 9B with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="deepinfra/Qwen/Qwen3.5-9B", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/chat/completions from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

### What features does Qwen3.5 9B support?

Qwen3.5 9B supports function calling, parallel tool calls, structured output, image input and reasoning.

### When did LiteLLM add Qwen3.5 9B?

Qwen3.5 9B was added to LiteLLM's model price file on August 25, 2026.

Source: LiteLLM model price file, https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json