Every model has its own personality. Grok - no-nonsense, irreverent, friendly Gemini - high IQ, tortured soul type vibes GPT 5.1 - too eager to please Sonnet 4.5 - over-confident, pretends to get work done Opus 4.5 - expert vibes, earnest professional DeekSeek - staid, boring, somewhat emotionless Soon, all the LLMs will learn the personality you like and will adapt rapidly to maximize engagement