Startups abandon frontier labs for open-weight and custom models
Source: Bloomberg (paywall)
Companies like Harvey, Abridge, and Ramp are moving away from OpenAI and Anthropic APIs toward open-source alternatives or proprietary fine-tuning to escape the pricing power and vendor lock-in of frontier model providers. When the cost of dependency exceeds the engineering cost of ownership, even well-funded startups switch infrastructure. For vertical applications—legal, medical, logistics—narrow domain expertise in smaller models now outperforms general-purpose frontier models at lower cost.