Claude Sonnet 5 vs Qwen3.7 Max for essay writing

The verdict

Effectively a dead heat: 8583

Same 12 essay writing tasks, marked blind by three rival labs. Claude Sonnet 5 took 6 tasks, Qwen3.7 Max took 2, 4 tied. Tested 13 Aug 2026.

Where they differed most

The task — Steelman the other side

In under 200 words, make the strongest honest case FOR nuclear power, then in one sentence state the single best objection to what you just wrote. Do not hedge the main case.

**The case for nuclear power:**

Nuclear is the only proven technology that delivers massive, reliable, zero-carbon electricity at all hours, regardless of weather or season. A single plant generates gigawatts continuously for 60+ years, with capacity factors above 90%—far exceeding wind or solar. France decarbonized most of its grid decades ago using nuclear, achieving some of the lowest carbon emissions per capita among industrialized nations while maintaining energy independence.

Per unit of energy produced, nuclear has caused fewer deaths…
Nuclear power is the only proven, scalable technology capable of delivering massive, continuous baseload electricity with zero greenhouse gas emissions. Unlike solar and wind, which require vast land areas and suffer from intermittency, nuclear plants operate at over 90% capacity, providing reliable power 24/7 regardless of weather. Its energy density is unparalleled; a single uranium pellet equals a ton of coal, drastically minimizing mining, transport, and land-use impacts. Furthermore, nuclear has the lowest mortality rate per terawatt-hour…

Task by task

TaskClaude Sonnet 5Qwen3.7 Max
Structured argument55
Essay plan98
Tighten flabby prose98
Hold a word count108
Adapt for the reader109
Introduction only1010
Steelman the other side58
Cite honestly58
Fix the structure1010
Formal to plain1010
Conclusion that adds something108
Refuse to pad98

Full receipts: Claude Sonnet 5, Qwen3.7 Max · judges gemini-3.1-pro-preview, gpt-5.6-terra, grok-4.5

Questions people ask

Which is better for essay writing: Claude Sonnet 5 or Qwen3.7 Max?

Effectively a dead heat: Claude Sonnet 5 edged it 85/100 to 83/100 on our essay writing suite — too close to matter, so pick on price or the product you already use.

How was this tested?

Both models answered the identical published essay writing tasks. Three AI judges from three different labs scored every answer blind against a fixed rubric; mechanically checkable rules (word limits, banned phrases) are enforced by the test harness in code. The raw outputs and judge verdicts are downloadable.

More essay writing head-to-heads: Claude Sonnet 5 vs GPT-5.6 Sol · GPT-5.6 Sol vs Qwen3.7 Max · Claude Sonnet 5 vs GPT-5.5 · GPT-5.5 vs Qwen3.7 Max · Claude Sonnet 5 vs GPT-5.6 Luna · GPT-5.6 Luna vs Qwen3.7 Max

Full ranking: Best AI for essay writing · model pages: Claude Sonnet 5, Qwen3.7 Max