AI infrastructure startup Gimlet Labs raises $300M at $3B valuation

This raise signals continued strong capital appetite for AI infrastructure middleware, particularly as chip heterogeneity becomes a mainstream operational concern. The involvement of Arm and Microsoft's M12 underscores strategic alignment with hardware and cloud ecosystems, not just financial backing. The real test will be whether Gimlet's software can become a default layer in enterprise AI deployments, especially as rival chip architectures gain traction. Watch for adoption metrics among large clients and whether the Arm partnership translates into technical moats.