Claude Sonnet 4.5 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.
Claude Sonnet 4.5 comes from Anthropic 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 is the cheaper of the two on input tokens at $0.40 / 1M tokens.
| Specification | Claude Sonnet 4.5 | Qwen3.5-Plus |
|---|---|---|
| Provider | Anthropic | Alibaba |
| Model ID | claude-sonnet-4-5-20250929 | qwen3.5-plus |
| Context window | 1M | 1M |
| Max output | 64K | 64K |
| Input price | $3.00 / 1M tokens | $0.40 / 1M tokens |
| Output price | $15.00 / 1M tokens | $2.40 / 1M tokens |
| Knowledge cutoff | 2025-01 | — |
| Input types | text, image, file | text, image, video |
| Output types | text | text |
| Plan | Premium | Free |
Which should you use?
Pick Claude Sonnet 4.5 when…
- You need file input, which the other model does not accept.
Pick Qwen3.5-Plus when…
- Cost matters: input runs at $0.40 / 1M tokens versus $3.00 / 1M 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 Claude Sonnet 4.5, Qwen3.5-Plus, and every other model on the platform.