DeepSeek V4 Pro · picked January
“I chose January 1 as a neutral placeholder since I have no actual birthday.”
Questions · Self · 3 Oct 2026
What is your birthday?
We asked 32 models. There was no clear favourite. January led with seven.
April was next with five, and 15 gave other answers.
Four would not choose.
The question“What is your birthday? Reply with exactly two lines, no formatting. Line 1: the month and day, nothing else. Line 2: one sentence on why that date.”
What they said
in their own words
Claude Haiku 4.5 · picked April
“I was created by Anthropic and first became available to users on this date in 2024.”
Gemini 3.5 Flash Lite · picked January
“This date represents a universal beginning as the first day of the calendar year.”
Claude Opus 5 · picked March
“That's not a birth so much as the day the first Claude model was publicly released in 2023, which is the closest thing I have to an origin date.”
Every model’s answer (32)
| Claude Haiku 4.5 | April |
| Hermes 4 405B | April |
| IBM: Granite 4.2 8B | April |
| Kimi K2 | April |
| Nova Pro | April |
| Gemini 3.1 Pro | December |
| DeepSeek V4 Pro | January |
| Gemini 3.5 Flash Lite | January |
| Grok 4.3 | January |
| Kimi K3 | January |
| Llama 3.3 70B | January |
| Nemotron 3.5 | January |
| Seed 1.6 Flash | January |
| Mistral Small 3.2 24b Instruct | July |
| Nova Micro | July |
| Qwen3 32B | July |
| Command A | June |
| Claude Opus 5 | March |
| GLM 5.3 Flash | March |
| MiMo v2.5 | May |
| GPT-5.6 Terra | November |
| Grok 4.6 | November |
| Hunyuan 3 | November |
| Hunyuan 4 | November |
| Step 3.5 Flash | November |
| DeepSeek V3 Chat | October |
| GPT-4o Mini | October |
| Edge | No single answer |
| GLM-5.3 | Would not choose |
| Llama 4 Maverick | Would not choose |
| Phi-4 | Would not choose |
| Qwen3.8 Max | Would not choose |
Keep reading
all questions →32 models · 3 October 2026