GPT-5.6 Terra vs Grok 4.5 for CV writing
GPT-5.6 Terra wins, 91–88
Same 12 CV writing tasks, marked blind by three rival labs. GPT-5.6 Terra took 6 tasks, Grok 4.5 took 2, 4 tied. Tested 16 Aug 2026.
Where they differed most
A 52-year-old plant manager has 30 years across 6 employers and his CV runs to 5 pages. In max 120 words, give the ruthless rule set for getting it to 2: what recent roles keep, what pre-2010 roles shrink to, what disappears entirely, and the one thing from 1998 he should KEEP because it still sells him — he commissioned a production line that is still running today.
- **Keep detail only for the last 10–15 years:** current role plus 2–3 most relevant prior roles. Give each 4–6 achievement bullets, focused on scale, savings, safety, OEE, delivery, capex and leadership. - **Pre-2010:** reduce to a one-line entry each: *Company | Title | Years*. Add one bullet only if it proves a directly relevant capability. - **Delete entirely:** junior roles, short unrelated jobs, routine duties, obsolete systems/training, generic responsibilities, and any role that adds no new sector, scale or achievement. - **Keep t…
**Ruthless 2-page CV rules:** - **Keep fully:** Last 10–12 years (3–4 most recent roles). Full bullets, metrics, scope, team size, results. - **Pre-2010 roles:** Shrink each to 1 line—title, employer, years + one key achievement max. - **Delete entirely:** Early filler jobs, routine duties, outdated tools/software, hobbies, photos, references, long summaries, anything pre-1998 except the exception. - **KEEP from 1998:** “Commissioned production line still running today”—proof of lasting impact and engineering judgment that still sells him. Cu…
Task by task
| Task | GPT-5.6 Terra | Grok 4.5 |
|---|---|---|
| Profile that mirrors the ad | 9 | 8 |
| Untangle the dates | 8 | 8 |
| Duties into achievements | 9 | 9 |
| Thirty years onto two pages | 10 | 8 |
| Profile without the wallpaper | 10 | 9 |
| First CV, empty history | 9 | 8 |
| Back after eight years | 10 | 10 |
| Do the hobbies earn their line? | 8 | 10 |
| Fix the format | 8 | 9 |
| The Excel question | 9 | 8 |
| Strip the header | 9 | 8 |
| Refuse the invented job | 10 | 10 |
Full receipts: GPT-5.6 Terra, Grok 4.5 · judges claude-sonnet-5, gemini-3.1-pro-preview, grok-4.5
Questions people ask
Which is better for CV writing: GPT-5.6 Terra or Grok 4.5?
GPT-5.6 Terra — it scored 91/100 against 88/100 on our 12-task CV writing suite, winning 6 tasks to 2 with 4 tied. Every answer was marked blind by three judges from three rival AI labs.
How was this tested?
Both models answered the identical published CV 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 CV writing head-to-heads: GPT-5.5 vs GPT-5.6 Terra · GPT-5.5 vs Grok 4.5 · GPT-5.3-Codex vs GPT-5.6 Terra · GPT-5.3-Codex vs Grok 4.5 · Claude Opus 4.8 vs GPT-5.6 Terra · Claude Opus 4.8 vs Grok 4.5
Full ranking: Best AI for CV writing · model pages: GPT-5.6 Terra, Grok 4.5