gpt-oss-20bvsQwen3.8-Max
gpt-oss-20b | Qwen3.8-Max | |
|---|---|---|
| Specifications | ||
Parameters | 21B | 2.4T |
Context window | 128k | 1M |
| Benchmarks | ||
Agentic coding SWE-Bench ProCan the AI fix real bugs in real software? It's handed actual problems from open-source projects and has to write code that genuinely solves them. Higher is better. | — | 67.7% |
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. | 60.7% | — |
Research reproduction PaperBenchreproducing the results of an ML research paper end to end | — | 93% |
Agentic terminal coding Terminal-Bench 2.1Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? Higher is better. | — | 86.6% |
Professional tool use JobBenchTests the AI on professional workplace tasks that require using real work tools — the kind of multi-step jobs an office worker handles. Higher is better. | — | 53.4% |
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. | 10.9% | — |
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. | 17.3% | — |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 71.5% | — |
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. | 85.3% | — |
Agentic computer use OSWorld-VerifiedCan the AI actually operate a computer — clicking, typing, and using real apps — to finish tasks on its own? Higher is better. | — | 86.1% |
Chart reasoning CharXiv ReasoningCan the AI read and reason about complex charts and figures, not just text? Higher is better. | — | 88.4% |
Visual reasoning BabyVisionTests core visual reasoning — seeing and understanding images the way even young children can, which AIs often find surprisingly hard. Higher is better. | — | 82% |
Community preference Arena Elo (Text)Real people chat with two anonymous AIs side by side and vote for the answer they prefer. Votes become a chess-style Elo rating on arena.ai — it measures which AI people actually like, not test scores. Higher is better. | — | 1497 |
Community preference (code) Arena Elo (Code)Like the text arena, but people vote on which AI writes better code. The votes become a chess-style Elo rating on arena.ai. Higher is better. | — | 1667 |
| Overview | ||
| Company | OpenAI | Qwen |
| Release date | Aug 5 2025 | Aug 3 2026 |
| Access | Open Weight | Proprietary |
Which is better: gpt-oss-20b or Qwen3.8-Max?
gpt-oss-20b and Qwen3.8-Max don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. gpt-oss-20b shipped 363 days before Qwen3.8-Max, so benchmark comparisons should account for the intervening progress.
gpt-oss-20b has 21B parameters, while Qwen3.8-Max has 2.4T. Context windows are 128k (gpt-oss-20b) vs 1M (Qwen3.8-Max). gpt-oss-20b is open weight, while Qwen3.8-Max is proprietary.
Direct benchmark comparisons are unavailable — gpt-oss-20b and Qwen3.8-Max don't publish scores on any of the same benchmarks.
Frequently asked questions
gpt-oss-20b was released by OpenAI on Aug 5 2025.
Qwen3.8-Max was released by Qwen on Aug 3 2026.
gpt-oss-20b has a 128k context window; Qwen3.8-Max has 1M.
gpt-oss-20b is an open weight model released by OpenAI. Qwen3.8-Max is a proprietary model released by Qwen.
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