Why the rise of open source AI isn’t hurting Anthropic … yet

Zhang argues that enterprises are increasingly deploying lighter open source models for routine tasks while continuing to use frontier models from companies like Anthropic for new, complex use cases. Anthropic still accounts for more than half of AI spending on Decagon's platform, indicating that open source has not yet eroded its market share.

The theory suggests that the rise of open source AI is expanding the overall market rather than cannibalizing frontier model spending. Zhang's comments come amid growing adoption of open source models by enterprises seeking lower costs and more control. Decagon's data shows that even as companies adopt open source, their spending on frontier models has not declined, pointing to distinct use cases for each category.

However, the article notes that this dynamic could shift as open source models improve and narrow the capability gap. The title's 'yet' reflects uncertainty about whether the complementarity will persist. For now, Anthropic's position remains strong, but the competitive landscape continues to evolve as open source models advance in quality and enterprise readiness.