# Qwen3.5 Plus

> Qwen3.5 Plus is a proprietary language model from Alibaba (Qwen), released on 16 Feb 2026. It accepts text, images and video and generates text, with a 1M-token context window and up to 66K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $0.26 per million input tokens and $1.56 per million output tokens (OpenRouter), across 3 providers we track.

Source page: https://www.aimodel.directory/models/qwen3-5-plus
Last verified: 4 Oct 2026

## Specifications

- **Developer:** Alibaba (Qwen)
- **Release date:** 16 Feb 2026 (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/alibaba/models/qwen3.5-plus.toml)
- **Status:** Generally available (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/alibaba/models/qwen3.5-plus.toml)
- **Weights:** Proprietary (API only) (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/alibaba/models/qwen3.5-plus.toml)
- **Context window:** 1M (1,000,000 tokens) (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/alibaba/models/qwen3.5-plus.toml)
- **Max output:** 66K tokens (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/alibaba/models/qwen3.5-plus.toml)
- **Knowledge cutoff:** Apr 2025 (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/alibaba/models/qwen3.5-plus.toml)
- **Input:** Text, images and video (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/alibaba/models/qwen3.5-plus.toml)
- **Output:** Text (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/alibaba/models/qwen3.5-plus.toml)
- **Reasoning mode:** Yes (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/alibaba/models/qwen3.5-plus.toml)
- **Tool calling:** Yes (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/alibaba/models/qwen3.5-plus.toml)

## API pricing (USD per 1M tokens)

| Provider | Input | Output | Cached input | Context |
|---|---|---|---|---|
| OpenRouter | $0.26 | $1.56 | – | 1M |
| OpenRouter | $0.30 | $1.80 | – | 1M |
| Alibaba Cloud Model Studio | $0.40 | $2.40 | – | 1M |
| Vercel AI Gateway | $0.40 | $2.40 | $0.04 | 1M |

## FAQ

### What is the context window of Qwen3.5 Plus?

Qwen3.5 Plus has a context window of 1,000,000 tokens (1M) and can generate up to 65,536 tokens in a single response, according to models.dev.

### How much does the Qwen3.5 Plus API cost?

Through Alibaba Cloud Model Studio, Qwen3.5 Plus costs $0.40 per million input tokens and $2.40 per million output tokens. The lowest listed price is $0.26 input / $1.56 output through OpenRouter. Prices last verified 4 Oct 2026.

### Is Qwen3.5 Plus open source?

No. Qwen3.5 Plus is a proprietary model; Alibaba (Qwen) has not released its weights. It is available through APIs including OpenRouter, Alibaba Cloud Model Studio, Vercel AI Gateway.

### When was Qwen3.5 Plus released?

Alibaba (Qwen) released Qwen3.5 Plus on 16 Feb 2026, according to models.dev.

### Which providers offer Qwen3.5 Plus?

We track Qwen3.5 Plus on 3 providers: OpenRouter, Alibaba Cloud Model Studio, Vercel AI Gateway.

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Data licensed CC BY 4.0. Cite as: AI Model Directory, "Qwen3.5 Plus", https://www.aimodel.directory/models/qwen3-5-plus