Qwen3.5 Plus vs Doubao Seed 2.0 Code
Qwen3.5 Plus is cheaper on output tokens, while Qwen3.5 Plus offers a larger context window. Choose Qwen3.5 Plus or Doubao Seed 2.0 Code based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Qwen3.5 Plus | Doubao Seed 2.0 Code |
|---|---|---|
| Provider | Alibaba | ZenMux |
| Input / 1M tokens | $0.40 | $0.90 |
| Output / 1M tokens | $2.40 | $4.48 |
| Context window | 1M | 256K |
| Parameters | — | — |
| Open weights | No | No |
| Released | Feb 2026 | Feb 2026 |
| GPQA Diamond score | 84.8 | — |
| FrontierMath score | 21.0 | — |
| Epoch Capabilities Index score | 146 | — |
FAQ
Is Qwen3.5 Plus or Doubao Seed 2.0 Code cheaper?
Qwen3.5 Plus is cheaper on output tokens ($2.40 vs $4.48 per 1M).
Which has the larger context window, Qwen3.5 Plus or Doubao Seed 2.0 Code?
Qwen3.5 Plus has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.