token.app › Compare › gpt-oss-120b vs Qwen3.5-Flash
gpt-oss-120b vs Qwen3.5-Flash
gpt-oss-120b and Qwen3.5-Flash split the 2 shared benchmarks evenly. Qwen3.5-Flash is 2.3× 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
| gpt-oss-120b | Qwen3.5-Flash | |
|---|---|---|
| Provider | OpenAI | Alibaba |
| Input $/1M | $0.150 | $0.065 |
| Output $/1M | $0.600 | $0.260 |
| Blended $/1M | $0.262 | $0.114 |
| Context window | 131K | 1M |
| Max output | 66K | 66K |
| Released | Aug 2025 | Feb 2026 |
| Licence | Open weights | Proprietary |
| GPQA Diamond | 75.8% | 82.3% |
| OTIS Mock AIME | 88.9% | 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 gpt-oss-120b if…
- Higher OTIS Mock AIME (88.9% vs 84.4%)
- Open weights — self-hostable
Choose Qwen3.5-Flash if…
- Costs less per token — $0.114 vs $0.262 blended
- Higher GPQA Diamond (82.3% vs 75.8%)
- Larger context window (1M)
- Newer model (released Feb 2026)
FAQ
Which is better, gpt-oss-120b or Qwen3.5-Flash?
Across the 2 benchmarks both models have independently-run scores for, gpt-oss-120b leads on 1 and Qwen3.5-Flash leads on 1. Benchmarks are one input — price and context window are on this page too.
Is gpt-oss-120b cheaper than Qwen3.5-Flash?
Qwen3.5-Flash is cheaper: $0.114 versus $0.262 per million tokens blended at 3:1 input:output. Input alone: $0.150 vs $0.065. Output alone: $0.600 vs $0.260.
What context windows do gpt-oss-120b and Qwen3.5-Flash have?
gpt-oss-120b: 131,072 tokens. Qwen3.5-Flash: 1,000,000 tokens.
Who makes gpt-oss-120b and Qwen3.5-Flash?
gpt-oss-120b is made by OpenAI. Qwen3.5-Flash is made by Alibaba.