WTF... First they said no to Elon Musk.
Then they built an AI that just shook the entire LLM industry.
– 27M parameters
– Trained on only 1000 examples
– Inspired by the human brain
– Beat Claude, o3-mini & Deepseek
You can’t afford to ignore this: 🧵 https://t.co/4y7M1RIAGr
It’s called the Hierarchical Reasoning Model.
HRM = 2 minds in sync
High-level → slow, strategic reasoning
Low-level → fast, detailed execution
It solves problems in one forward pass (no chain-of-thought needed).
Instead of guessing every step like CoT, HRM learns to reason internally.
Kind of like how your brain does it quietly before you speak.
Now the fun part: performance.
Despite being tiny (just 27M params), HRM beats some of the biggest models on hard reasoning tasks:
✅ ARC-AGI-1
✅ ARC-AGI-2
✅ Extreme Sudoku
✅ Maze navigation
With just 1000 training examples. No pretraining. https://t.co/mrnEH89My5
Model comparisons (ARC-AGI-1):
Claude 3.7 (8K context): 21.2%
o3-mini-high: 34.5%
HRM (27M): 40.3%
And it crushes them on Sudoku and Maze, where most models score 0%.
HRM hits 74.5% and 55% respectively. https://t.co/CYm3sUC5DX
Other models rely on:
- Long prompts
- Tons of labeled steps
- Slow inference
HRM?
Just a smart internal process that quietly works through tough problems.
No language needed. https://t.co/zDT2LKRBa3
It also knows when to stop.
If the task is simple, it solves it quickly.
If it’s complex, it takes more time.
That’s a level of adaptability we don’t usually see. 👀
Like real cognitive effort.
There’s one more thing.
The way HRM processes information actually mirrors how real brains work.
→ Different parts specialize.
→ They update at different speeds.
→ They guide each other over time.
More than just efficient, this thing is biologically inspired. https://t.co/CHvZ881lnH
In a space where everything is getting bigger, slower & more expensive…
HRM shows there’s another path: More reasoning. Less size. More speed 🔥
It’s a glimpse of what smarter AI could actually look like.
Full paper: https://t.co/gBZHolkePp
Code: https://t.co/9Um4TErOXr
Done!
If this thread helped you,
👉 Repost it to help someone else.
👉 Follow @EyeingAI – I break down AI every day.
