Reinforced Acquires Fern Labs: The End of Quadratic Complexity
Reinforced acquires Fern Labs to integrate their 'SparseFormer' technology. This isn't just a talent buy; it's a bet that we can break the O(n²) curse of Transformers.

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We are done with 'brute force' scaling. Today, Reinforced is thrilled to announce the acquisition of Fern Labs, the pioneers of sparse attention mechanisms. This isn't just an acqui-hire. We are integrating their 'SparseFormer' architecture directly into our Titan training engine. Why? Because the future of AI isn't bigger models; it's smarter attention.
The O(n²) Problem
For the last five years, the entire industry has been held hostage by a single mathematical fact: the attention mechanism in Transformers scales quadratically. If you double the context length, the compute cost quadruples. This is why 100k context windows are expensive and 1M context windows are a luxury.
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Enter Fern Labs
Fern Labs didn't just accept this. Founded by former researchers who refused to believe that 'more GPUs' was the only answer, they developed the 'SparseFormer'. Instead of attending to every single token, their architecture dynamically selects the 'active' tokens that matter. It turns O(n²) into O(n log n). In plain English: we can now train on context windows 100x longer for the same price.
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The Integration Roadmap
We aren't wasting time. Fern's custom CUDA kernels are already being merged into our stack. By Q1 2026, every model trained by Reinforced will utilize sparse attention by default. This acquisition accelerates our roadmap by 18 months. While others are buying more H100s, we are making our existing ones 10x more efficient.



