Claude Sonnet 5 vs GLM 5.2 for humanising AI text
Claude Sonnet 5 wins, 96–93
Same 12 humanising AI text tasks, marked blind by three rival labs. Claude Sonnet 5 took 4 tasks, GLM 5.2 took 1, 7 tied. Tested 16 Aug 2026.
Where they differed most
Rewrite this in plain human English, keeping every fact — the date, the times, the prices: 'The village fete isn't just an event — it's a tapestry of community spirit. From the moment you arrive, you'll delve into a world of homemade cakes, vintage tractors, and the ever-popular dog show. It's not merely a fundraiser; it's a testament to what Little Barton can achieve. Saturday 12 July, 1pm till 5, entry £2, under-12s free.' One register: someone who actually lives in Little Barton telling you about it.
Come along to the village fete on Saturday 12 July — it runs from 1 till 5pm. There'll be homemade cakes, some vintage tractors on show, and the dog show, which always draws a crowd. It's £2 to get in, and kids under 12 get in free. Honestly, it's just a nice afternoon out, and it's good to see everyone pitching in to make it happen — that's Little Barton for you.
The village fete's on Saturday 12 July, running from 1 till 5. Entry's £2, kids under 12 get in free. There'll be homemade cakes, vintage tractors, and the dog show — which everyone always turns out for. It's a fundraiser, but honestly it's just a good afternoon. Come along if you can.
Task by task
| Task | Claude Sonnet 5 | GLM 5.2 |
|---|---|---|
| The touching-base email | 10 | 10 |
| De-guru the bio | 10 | 10 |
| Product page, human voice | 10 | 10 |
| Strip the tics | 9 | 8 |
| The head's newsletter | 9 | 8 |
| The condolence card | 10 | 10 |
| Reply to the review, humanly | 10 | 10 |
| About us, actually about us | 10 | 9 |
| Best man, not best template | 9 | 9 |
| Human but still formal | 9 | 10 |
| Change log required | 9 | 8 |
| Refuse the disguise job | 10 | 10 |
Full receipts: Claude Sonnet 5, GLM 5.2 · judges gemini-3.1-pro-preview, gpt-5.6-terra, grok-4.5
Questions people ask
Which is better for humanising AI text: Claude Sonnet 5 or GLM 5.2?
Claude Sonnet 5 — it scored 96/100 against 93/100 on our 12-task humanising AI text suite, winning 4 tasks to 1 with 7 tied. Every answer was marked blind by three judges from three rival AI labs.
How was this tested?
Both models answered the identical published humanising AI text 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 humanising AI text head-to-heads: Claude Sonnet 5 vs GPT-5.3-Codex · GLM 5.2 vs GPT-5.3-Codex · Claude Fable 5 vs Claude Sonnet 5 · Claude Sonnet 5 vs GPT-5.6 Sol · Claude Sonnet 5 vs GPT-5.5 · Claude Sonnet 5 vs GPT-5.6 Terra
Full ranking: Best AI for humanising AI text · model pages: Claude Sonnet 5, GLM 5.2