token.app › Compare › o1 vs Qwen3.5-Flash
o1 vs Qwen3.5-Flash
Qwen3.5-Flash leads on 3 of 3 shared benchmarks. Qwen3.5-Flash is 231× cheaper per token on a blended 3:1 basis. Qwen3.5-Flash accepts the larger context window (1M).
Head to head
Blended price uses a 3:1 input:output mix
| o1 | Qwen3.5-Flash | |
|---|---|---|
| Provider | OpenAI | Alibaba |
| Input $/1M | $15.00 | $0.065 |
| Output $/1M | $60.00 | $0.260 |
| Blended $/1M | $26.25 | $0.114 |
| Context window | 200K | 1M |
| Max output | 100K | 66K |
| Released | Dec 2024 | Feb 2026 |
| Licence | Proprietary | Proprietary |
| GPQA Diamond | 76.8% | 82.3% |
| FrontierMath T1–3 | 14.7% | 18.2% |
| OTIS Mock AIME | 73.3% | 84.4% |
Benchmark scores independently run and published by Epoch AI, 'AI Benchmarking Hub', used under CC BY 4.0. Only benchmarks with a score for BOTH models are compared.
Choose o1 if…
- No clear advantage on the data we hold.
Choose Qwen3.5-Flash if…
- Costs less per token — $0.114 vs $26.25 blended
- Higher GPQA Diamond (82.3% vs 76.8%)
- Higher FrontierMath T1–3 (18.2% vs 14.7%)
- Higher OTIS Mock AIME (84.4% vs 73.3%)
- Larger context window (1M)
- Newer model (released Feb 2026)
FAQ
Which is better, o1 or Qwen3.5-Flash?
Across the 3 benchmarks both models have independently-run scores for, o1 leads on 0 and Qwen3.5-Flash leads on 3. Benchmarks are one input — price and context window are on this page too.
Is o1 cheaper than Qwen3.5-Flash?
Qwen3.5-Flash is cheaper: $0.114 versus $26.25 per million tokens blended at 3:1 input:output. Input alone: $15.00 vs $0.065. Output alone: $60.00 vs $0.260.
What context windows do o1 and Qwen3.5-Flash have?
o1: 200,000 tokens. Qwen3.5-Flash: 1,000,000 tokens.
Who makes o1 and Qwen3.5-Flash?
o1 is made by OpenAI. Qwen3.5-Flash is made by Alibaba.