Sonar Pro vs Qwen3.5-Plus
Side-by-side specs, pricing and capabilities. Both models run on Clade under one subscription, so you can switch between them in the same conversation.
Sonar Pro comes from Perplexity and Qwen3.5-Plus from Alibaba. The practical difference for most people is context, price, and which input types each one accepts.
Qwen3.5-Plus holds more in a single conversation — 1M tokens against 128K — which matters for long documents and large codebases.
Qwen3.5-Plus is the cheaper of the two on input tokens at $0.40 / 1M tokens.
| Specification | Sonar Pro | Qwen3.5-Plus |
|---|---|---|
| Provider | Perplexity | Alibaba |
| Model ID | sonar-pro | qwen3.5-plus |
| Context window | 128K | 1M |
| Max output | — | 64K |
| Input price | $3.00 / 1M tokens | $0.40 / 1M tokens |
| Output price | $15.00 / 1M tokens | $2.40 / 1M tokens |
| Knowledge cutoff | — | — |
| Input types | text, image, file | text, image, video |
| Output types | text | text |
| Plan | Premium | Free |
Which should you use?
Pick Qwen3.5-Plus when…
- You need the larger context window — 1M against 128K.
- Cost matters: input runs at $0.40 / 1M tokens versus $3.00 / 1M tokens.
- You want longer single responses — up to 64K output tokens.
- You need video input, which the other model does not accept.
- You are on the free plan — this model is included without an upgrade.
Related comparisons
Try both on Clade
You do not have to choose. One Clade subscription gives you Sonar Pro, Qwen3.5-Plus, and every other model on the platform.