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GPT-5.5 Pro vs Qwen 3.6 Max (Preview)

Verdict

GPT-5.5 Pro leads 5–0 across 5 shared benchmarks.

GPT-5.5 Pro 5 · Qwen 3.6 Max (Preview) 0 · higher isn't always better — see caveats.

Per-benchmark head-to-head

Reported scores — protocols may differ. How we compare

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GPT-5.5 ProQwen 3.6 Max (Preview)

Capabilities

Reasoning

Reasoning: GPT-5.5 Pro leads 3–0 across 3 shared reasoning benchmarks (largest gap: SimpleBench, 72.28 vs 55.6 — single evaluator).

4 reproduced2 unverified

What the labs claim

Vendor claims — compare against the measured scores above. A claim is what a developer says about its own model, not an independent measurement.

GPT-5.5 Pro

General

  • “In GPT-5.5 Pro, early testers are seeing a significant step up in both the difficulty and quality of work ChatGPT can take on”
    openai.com2026

Reasoning

  • “GPT-5.5 Pro, designed for even harder questions and higher-accuracy work, is available to Pro, Business, and Enterprise users.”
    openai.com2026

Writing

  • “testers found GPT-5.5 Pro's responses significantly more comprehensive, well-structured, accurate, relevant, and useful”
    openai.com2026

Qwen 3.6 Max (Preview)

Agentic / Tool Use

  • “Compared to Qwen3.6-Plus, this preview release brings stronger world knowledge and instruction following, along with significant agentic coding improvements across a wide range of benchmarks.”
    qwen.ai2026
  • “improved real-world agent and knowledge reliability performance”
    qwen.ai2026

Coding

  • “It achieves the top score on six major coding benchmarks - SWE-bench Pro, Terminal-Bench 2.0, SkillsBench, QwenClawBench, QwenWebBench, and SciCode - with substantial gains over its predecessor”
    qwen.ai2026
A higher number is not always a better model. Each score is task performance under a disclosed harness. Of the 10 measurements across 5 shared benchmarks, 10 single-evaluator or undisclosed-protocol reports; 80% are independently reproduced. Qwen 3.6 Max (Preview) pricing is cross-check disputed — weigh cost claims with the same caution as benchmark wins. Follow any benchmark to its integrity grade before reading a win as decisive.

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