TechCrunch Startup News Luminal raises $5.3 million to build a better GPU code framework; plus Sakana AI raises $135M Series B at a $2.65B valuation to continue building AI models for Japan
Nov 18, 2025
Luminal just secured $5.3 million to enhance GPU optimization, focusing on compiler advancements to challenge NVIDIA's dominance. Meanwhile, Sakana AI raised a whopping $135 million, now valued at $2.65 billion, to create specialized AI models tailored for the Japanese market. This startup aims to extend its reach across various sectors, emphasizing the significance of culturally resonant AI. As the competition heats up, these innovative companies showcase the evolving landscape of technology and regional AI solutions!
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Developer Friction Sparked Luminal
- Joe Fiati left Intel after realizing hardware success is limited by developer-facing software barriers.
- He then co-founded Luminal to focus on improving compiler-level tooling so developers actually use advanced hardware.
Compiler Optimizations Unlock More Compute
- Luminal competes by squeezing more compute from existing infrastructure via compiler optimizations rather than selling raw GPUs.
- Compiler-level improvements can offer broad economic value even if hyperscalers can hand-tune models longer-term.
Open CUDA Opens Startup Opportunities
- Many elements of NVIDIA's CUDA are open source, which creates room for startups to build alternative stack components.
- The market for inference optimization is growing as firms seek cheaper, faster ways to run models.