GPT OSS 120B vs Qwen3.8-27B
Qwen3.8-27B significantly outperforms across most benchmarks.
OpenAI · Alibaba Cloud / Qwen Team · Updated for 2026
Which is better?
GPT OSS 120B outperforms in 0 benchmarks, while Qwen3.8-27B is better at 2 benchmarks (GPQA, Humanity's Last Exam). Qwen3.8-27B significantly outperforms across most benchmarks.
Based on current benchmark, pricing, and model metadata for 2026.
Choose GPT OSS 120B
- you want predictable pricing at $0.09/M input and $0.45/M output
Choose Qwen3.8-27B
- you want the strongest raw capability — it leads on 2 of 2 shared benchmarks
- you want the most recent training data — it shipped Aug 2026
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
GPT OSS 120B outperforms in 0 benchmarks, while Qwen3.8-27B is better at 2 benchmarks (GPQA, Humanity's Last Exam).
Qwen3.8-27B significantly outperforms across most benchmarks.
Arena Performance
Playground indexes and blind preference scores
Model Size
Parameter count comparison
GPT OSS 120B has 89.0B more parameters than Qwen3.8-27B, making it 320.4% larger.
Context Window
Maximum input and output token capacity
Only GPT OSS 120B specifies input context (131,072 tokens). Only GPT OSS 120B specifies output context (131,072 tokens).
Input Capabilities
Supported data types and modalities
Qwen3.8-27B supports multimodal inputs, whereas GPT OSS 120B does not.
Qwen3.8-27B can handle both text and other forms of data like images, making it suitable for multimodal applications.
GPT OSS 120B
Qwen3.8-27B
License
Usage and distribution terms
Both models are licensed under Apache 2.0.
Both models share the same licensing terms, providing consistent usage rights.
Apache 2.0
Open weights
Apache 2.0
Open weights
Release Timeline
When each model was launched
GPT OSS 120B was released on 2025-08-05, while Qwen3.8-27B was released on 2026-08-14.
Qwen3.8-27B is 12 months newer than GPT OSS 120B.
Aug 5, 2025
1.1 years ago
Aug 14, 2026
1 weeks ago
1.0yr newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Outputs Comparison
Judge for yourself.
Run your own prompts against GPT OSS 120B and Qwen3.8-27B side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT OSS 120B vs Qwen3.8-27B.