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SubQ: The 12M-Token Subquadratic LLM Splitting AI Researchers

Miami startup Subquadratic walked out of stealth on May 5 with $29M in seed funding and SubQ — a model claiming a 12-million-token context window at roughly 1,000x lower compute than dense-attention frontier rivals. Researchers are not all convinced.

By Sarah Chen · 5 min · May 16, 2026