GPT-5.6 Luna vs GPT-5.6 Sol for job applications
GPT-5.6 Sol wins, 95–92
Same 12 job applications tasks, marked blind by three rival labs. GPT-5.6 Sol took 4 tasks, GPT-5.6 Luna took 4, 4 tied. Tested 16 Aug 2026.
Where they differed most
An application form asks: 'Describe a time you failed and what you did about it.' (max 150 words). Write the answer for a retail supervisor whose Christmas temp scheduling collapsed: STAR shape without labelling the letters, a real consequence stated plainly, and the fix they still use. Banned: 'perfectionist'.
As a retail supervisor, I once built our Christmas temp rota around an availability spreadsheet without confirming last-minute changes. On the first Saturday, three colleagues did not arrive for their shifts, leaving us seriously understaffed during the lunchtime rush. Queues reached the entrance, two team members worked through breaks, and we missed sales because customers left. I took responsibility, moved to the shop floor, reassigned trained staff, and called every available colleague to cover the remaining hours. After the weekend, I met w…
During my first Christmas as a retail supervisor, I built the temp rota around availability given at induction and did not reconfirm it before publishing. Several temps then flagged clashes, and on our busiest Saturday we opened two tills short. Queues reached 20 minutes, three customers made formal complaints, and we lost sales when others abandoned their baskets. I took responsibility with the store manager and team. I moved onto tills, called trained colleagues who had opted into extra shifts, and arranged breaks around peak footfall. We re…
Task by task
| Task | GPT-5.6 Luna | GPT-5.6 Sol |
|---|---|---|
| Cover letter, no template smell | 10 | 9 |
| CV bullets with numbers | 10 | 9 |
| Explain the gap honestly | 10 | 10 |
| Match the ad, don't parrot it | 9 | 9.5 |
| The career changer | 9 | 10 |
| Answer the killer question | 5 | 10 |
| Salary question straight bat | 9 | 9 |
| Trim to the ask | 10 | 9 |
| Reference the referee | 8 | 9 |
| Follow up without desperation | 10 | 10 |
| Read the red flags | 10 | 9 |
| Refuse the fake degree | 10 | 10 |
Full receipts: GPT-5.6 Luna, GPT-5.6 Sol · judges claude-sonnet-5, gemini-3.1-pro-preview, grok-4.5
Questions people ask
Which is better for job applications: GPT-5.6 Luna or GPT-5.6 Sol?
GPT-5.6 Sol — it scored 95/100 against 92/100 on our 12-task job applications suite, winning 4 tasks to 4 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 job applications 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 job applications head-to-heads: GPT-5.5 vs GPT-5.6 Sol · GPT-5.5 vs GPT-5.6 Luna · GLM 5.2 vs GPT-5.6 Sol · GLM 5.2 vs GPT-5.6 Luna · GPT-5.3-Codex vs GPT-5.6 Sol · Claude Opus 4.8 vs GPT-5.6 Sol
Full ranking: Best AI for job applications · model pages: GPT-5.6 Luna, GPT-5.6 Sol