token.app › Compare › o3 vs Qwen3.5-Flash
o3 vs Qwen3.5-Flash
o3 and Qwen3.5-Flash split the 3 shared benchmarks evenly. Qwen3.5-Flash is 31× 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
| o3 | Qwen3.5-Flash | |
|---|---|---|
| Provider | OpenAI | Alibaba |
| Input $/1M | $2.00 | $0.065 |
| Output $/1M | $8.00 | $0.260 |
| Blended $/1M | $3.50 | $0.114 |
| Context window | 200K | 1M |
| Max output | 100K | 66K |
| Released | Apr 2025 | Feb 2026 |
| Licence | Proprietary | Proprietary |
| GPQA Diamond | 81.8% | 82.3% |
| FrontierMath T1–3 | 33.3% | 18.2% |
| OTIS Mock AIME | 84.4% | 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 o3 if…
- Higher FrontierMath T1–3 (33.3% vs 18.2%)
Choose Qwen3.5-Flash if…
- Costs less per token — $0.114 vs $3.50 blended
- Higher GPQA Diamond (82.3% vs 81.8%)
- Larger context window (1M)
- Newer model (released Feb 2026)
FAQ
Which is better, o3 or Qwen3.5-Flash?
Across the 3 benchmarks both models have independently-run scores for, o3 leads on 1 and Qwen3.5-Flash leads on 1. Benchmarks are one input — price and context window are on this page too.
Is o3 cheaper than Qwen3.5-Flash?
Qwen3.5-Flash is cheaper: $0.114 versus $3.50 per million tokens blended at 3:1 input:output. Input alone: $2.00 vs $0.065. Output alone: $8.00 vs $0.260.
What context windows do o3 and Qwen3.5-Flash have?
o3: 200,000 tokens. Qwen3.5-Flash: 1,000,000 tokens.
Who makes o3 and Qwen3.5-Flash?
o3 is made by OpenAI. Qwen3.5-Flash is made by Alibaba.