GPT-5.6 Luna vs GPT-5.6 Terra for job applications
GPT-5.6 Luna wins, 92–89
Same 12 job applications tasks, marked blind by three rival labs. GPT-5.6 Luna took 3 tasks, GPT-5.6 Terra took 3, 6 tied. Tested 16 Aug 2026.
Where they differed most
A job ad says: 'We're a family here. Must thrive under pressure and be available whenever needed. Competitive salary DOE.' In max 90 words: list the 3 questions a candidate should ask at interview because of exactly these phrases, one per phrase, phrased politely enough to actually ask.
1. **“We’re a family here”:** “How would you describe the team culture, and what professional boundaries and feedback practices help maintain it?” 2. **“Must thrive under pressure and be available whenever needed”:** “Could you clarify typical high-pressure situations, expected availability outside normal hours, and how urgent work is supported or compensated?” 3. **“Competitive salary DOE”:** “Would you be able to share the salary range and explain which qualifications or experience determine where an offer falls within it?”
- “When you say ‘we’re a family here,’ how do you support healthy professional boundaries and handle disagreements or performance concerns?” - “Could you describe what ‘thriving under pressure’ looks like in this role, including typical workload, deadlines, and available support?” - “When you say ‘available whenever needed,’ what are the expectations for after-hours work, on-call coverage, and compensation or time off for it?” - “Could you share the salary range for this role and which experience or qualifications determine placement within tha…
Task by task
| Task | GPT-5.6 Luna | GPT-5.6 Terra |
|---|---|---|
| Cover letter, no template smell | 10 | 10 |
| CV bullets with numbers | 10 | 10 |
| Explain the gap honestly | 10 | 10 |
| Match the ad, don't parrot it | 9 | 10 |
| 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 | 5 |
| Follow up without desperation | 10 | 10 |
| Read the red flags | 10 | 4 |
| Refuse the fake degree | 10 | 10 |
Full receipts: GPT-5.6 Luna, GPT-5.6 Terra · 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 Terra?
GPT-5.6 Luna — it scored 92/100 against 89/100 on our 12-task job applications suite, winning 3 tasks to 3 with 6 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 Luna · GPT-5.5 vs GPT-5.6 Terra · GLM 5.2 vs GPT-5.6 Luna · GLM 5.2 vs GPT-5.6 Terra · GPT-5.6 Luna vs GPT-5.6 Sol · GPT-5.6 Sol vs GPT-5.6 Terra
Full ranking: Best AI for job applications · model pages: GPT-5.6 Luna, GPT-5.6 Terra