Qwen3.5 Plus vs Gemini 2.5 Flash
Qwen3.5 Plus is cheaper on output tokens, while Gemini 2.5 Flash offers a larger context window. Choose Qwen3.5 Plus or Gemini 2.5 Flash based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Qwen3.5 Plus | Gemini 2.5 Flash |
|---|---|---|
| Provider | Alibaba | |
| Input / 1M tokens | $0.40 | $0.30 |
| Output / 1M tokens | $2.40 | $2.50 |
| Context window | 1M | 1M |
| Parameters | — | — |
| Open weights | No | No |
| Released | Feb 2026 | Jun 2025 |
| GPQA Diamond score | 84.8 | — |
| FrontierMath score | 21.0 | 4.8 |
| Epoch Capabilities Index score | 146 | 143 |
| SWE-bench Verified score | — | 28.7 |
| LMArena (Chatbot Arena) Elo score | — | 1417 |
| LMArena Vision Elo score | — | 1235 |
FAQ
Is Qwen3.5 Plus or Gemini 2.5 Flash cheaper?
Qwen3.5 Plus is cheaper on output tokens ($2.40 vs $2.50 per 1M).
Which has the larger context window, Qwen3.5 Plus or Gemini 2.5 Flash?
Gemini 2.5 Flash 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.