o1 vs Qwen3.5-Flash
| Spec | o1 | Qwen3.5-Flash |
|---|---|---|
| Respan Index | 23.3 (#100) | 23.3 (#100) |
| Blended price per 1M | $26.3 | $0.16 |
| Context window | 200K | 1M |
| Input / output per 1M | $15 / $60 | $0.09 / $0.368 |
| Max output | 100K | - |
| Input | text, vision | text, vision |
| Released | 2024-12-17 | 2026-02-23 |
Respan Index by category
Each category is scored 0 to 100, and how far ahead the winner is. Leads under a point are close to even.
| Category | o1 | Qwen3.5-Flash |
|---|---|---|
| Coding | 7.1 o1 | 8.9* Qwen3.5-Flash |
| Agents | 19.3* o1 | 18.5 Qwen3.5-Flash |
| Reasoning | 23.2 o1 | 29.7 Qwen3.5-Flash |
| Knowledge & language | 40.9 o1 | 20.3 Qwen3.5-Flash |
| Human preference | 45.2* o1 | 46.3 Qwen3.5-Flash |
* Estimated: no published scores in that category. How the Respan Index works
Benchmarks both report
Qwen3.5-Flash leads on 4 of the 5 benchmarks both report. Higher is better. Each score links to where it was published.
FAQ
Is o1 better than Qwen3.5-Flash?
o1 and Qwen3.5-Flash tie on the Respan Index at 23.3. Qwen3.5-Flash leads on 4 of the 5 benchmarks both report.
Which is cheaper, o1 or Qwen3.5-Flash?
o1 lists at $15 input and $60 output per 1M tokens; Qwen3.5-Flash at $0.09 and $0.368. Qwen3.5-Flash is 165x cheaper per token at list price.
Which has the larger context window?
o1 accepts 200K tokens and Qwen3.5-Flash 1M tokens.