Jimmy Ba Departs Cohere

What happened Jimmy Ba resigned from Cohere, marking the sixth founding member departure from the Toronto-based AI firm. Ba, a co-author of the Adam optimiser paper, leaves as the company prioritises enterprise-grade large language models. This exit reduces the original founding team to a minority. Cohere maintains its focus on retrieval-augmented generation systems for corporate clients. Ba's departure follows five previous founding member exits since the company's inception. ## Why it matters Founding talent migration increases risk for enterprise CTOs relying on Cohere’s proprietary architectures. Because six founders have now exited, institutional knowledge regarding core model optimisations diminishes. This pattern mirrors the Thinking Machines Lab departures in January, suggesting a broader talent consolidation toward larger labs. Investors face increased key-person risk because the original technical visionaries no longer steer development. Therefore, procurement teams face increased due diligence requirements to verify long-term roadmap stability, resulting in slower vendor selection cycles.