gpt-oss-120bvsQwen2.5
gpt-oss-120b | Qwen2.5 | |
|---|---|---|
| Specifications | ||
Parameters | 117B | 72B |
Context window | 128k | 128k |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | 11% | — |
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 62.4% | — |
Multidisciplinary reasoning Humanity's Last Exam · no toolsHumanity's Last Exam — extremely hard expert questions across many subjects, written so you can't just look up the answer. “No tools” means the AI answers on its own. Higher is better. | 14.9% | — |
Multidisciplinary reasoning Humanity's Last Exam · with toolsHumanity's Last Exam — extremely hard expert questions across many subjects. “With tools” means the AI is allowed to search the web or run code while answering. Higher is better. | 19% | — |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 80.1% | — |
General knowledge MMLUA 57-subject multiple-choice exam — history, law, medicine, maths — that was the standard measure of how much a model knows from 2020 until roughly 2024, when frontier scores crowded into the high 80s and labs moved on to harder tests. The scores here were published years apart under different testing setups, so read them as a historical record rather than a like-for-like ranking. Higher is better. | 90% | — |
| Overview | ||
| Company | OpenAI | Qwen |
| Release date | Aug 5 2025 | Sep 19 2024 |
| Access | Open Weight | Open Weight |
Which is better: gpt-oss-120b or Qwen2.5?
gpt-oss-120b and Qwen2.5 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Qwen2.5 shipped 320 days before gpt-oss-120b, so benchmark comparisons should account for the intervening progress.
gpt-oss-120b has 117B parameters, while Qwen2.5 has 72B. Context windows are 128k (gpt-oss-120b) vs 128k (Qwen2.5).
Direct benchmark comparisons are unavailable — gpt-oss-120b and Qwen2.5 don't publish scores on any of the same benchmarks.
Frequently asked questions
gpt-oss-120b was released by OpenAI on Aug 5 2025.
Qwen2.5 was released by Qwen on Sep 19 2024.
gpt-oss-120b has a 128k context window; Qwen2.5 has 128k.
Other comparisons
gpt-oss-120bvsClaude Opus 5Qwen2.5vsClaude Opus 5gpt-oss-120bvsGemini 3.6 FlashQwen2.5vsGemini 3.6 Flashgpt-oss-120bvsMuse GlimmerQwen2.5vsMuse Glimmergpt-oss-120bvsGrok 4.5Qwen2.5vsGrok 4.5gpt-oss-120bvsDeepSeek-V4-Flash-0731Qwen2.5vsDeepSeek-V4-Flash-0731gpt-oss-120bvsMistral Medium 3.5Qwen2.5vsMistral Medium 3.5