GPT-5.5-ProvsQwen3-Coder
GPT-5.5-Pro | Qwen3-Coder | |
|---|---|---|
| Specifications | ||
Parameters | — | 480B |
Context window | — | 256k |
| 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. | 36%Best | 20% |
Next.js coding Next.js EvalsVercel's open eval of how well AI coding agents build and migrate real Next.js apps — measured as the share of tasks the agent completes successfully. Higher is better. | 83% | — |
Web browsing BrowseCompCan the AI browse the web and track down hard-to-find answers? Higher is better. | 90.1% | — |
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. | 57.2% | — |
Advanced math FrontierMath · Tier 1–3Very hard, research-level math problems. Tiers 1–3 are the (still extremely difficult) lower tiers. Higher is better. | 52.4% | — |
Advanced math FrontierMath · Tier 4Very hard, research-level math problems. Tier 4 is the hardest — close to what professional research mathematicians tackle. Higher is better. | 39.6% | — |
Knowledge work GDPval (win/tie rate)How often the AI's work matches or beats a human expert's on real knowledge-work tasks. Higher is better. | 82.3% | — |
| Overview | ||
| Company | OpenAI | Qwen |
| Release date | Apr 23 2026 | Jul 22 2025 |
| Access | Proprietary | Open Weight |
Which is better: GPT-5.5-Pro or Qwen3-Coder?
GPT-5.5-Pro leads Qwen3-Coder on 1 of the 1 benchmark they both report (BullshitBench v2). Qwen3-Coder shipped 275 days before GPT-5.5-Pro, so benchmark comparisons should account for the intervening progress.
GPT-5.5-Pro is proprietary, while Qwen3-Coder is open weight.
On BullshitBench v2, GPT-5.5-Pro leads at 36% vs Qwen3-Coder at 20%.
Frequently asked questions
GPT-5.5-Pro was released by OpenAI on Apr 23 2026.
Qwen3-Coder was released by Qwen on Jul 22 2025.
GPT-5.5-Pro is a proprietary model released by OpenAI. Qwen3-Coder is an open weight model released by Qwen.
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