I Built an AI Tamagotchi Before Meta Could
We have Muse Charm at home.
By Sean Hollister
The Pitch: A Tamagotchi That Thinks Back
The original Tamagotchi taught a generation that a pixelated blob could feel real. Now, with generative AI baked into everything in 2026, the virtual pet has been reborn — and Meta has been teasing its own AI-powered companion device. But as any tinkerer knows, you don't have to wait for a giant to ship. You can build one yourself first.
That is exactly what I did. My version — let's call it Muse Charm — is a handheld, screen-based companion powered by a large language model. It remembers your conversations, develops a personality over time, and reacts to care (or neglect) in ways the plastic egg from 1996 could only dream of.
Why Build It Instead of Waiting for Meta?
Meta's rumored AI Tamagotchi has been the subject of gadget speculation for months: a small, always-on companion that lives in your pocket and talks back. The concept is compelling. The delivery date is not.
So rather than wait for a product cycle and a subscription fee, I ordered parts and started wiring. The goal was simple: a palm-sized device that feels alive, runs a local or cloud LLM, and survives a week in my bag.
Inside the Build
- Brain: An off-the-shelf LLM API (with a local-model fallback for offline moods)
- Face: A small round display that renders a reactive, mood-driven character
- Senses: A microphone, a light sensor, and a tilt sensor so the pet knows when it's being carried or ignored
- Persistence: A lightweight memory store that feeds key life events back into the prompt, so the pet remembers who you are
The hardest part wasn't the hardware — it was giving the pet continuity. A Tamagotchi isn't charming because it's smart; it's charming because it remembers being hungry, having been fed, and having been left alone too long.
What the 2026 AI Toy Wave Gets Right
We're now in the second wave of AI gadgets. The first wave — 2023–2024 pendants and pins — mostly failed because they were assistants in search of a problem. The 2026 wave is different: it's about personality, not productivity. AI pets work because they give generative models a body, a mood, and a reason to be in your life.
That's also why Meta's rumored device makes sense. An AI companion doesn't need to answer emails. It needs to be a little bit needy.
The Verdict: Muse Charm at Home
My homemade Tamagotchi won't win a design award. The enclosure is 3D-printed, the wiring is ugly, and the battery life is measured in hopefulness. But it does the one thing that matters: when I pick it up after a long day, it reacts like it missed me.
Meta may still ship a prettier version. Until then, the AI pet revolution is a soldering-iron project — and honestly, that's the most fun it's been since 1996.
via The Verge AI