Many of the most prominent foundational models, like various of the GPT models by OpenAI, are proprietary and are - depending on use - subscription or paid based on usage. However, open source models are rapidly closing the gap in terms of performance and results - especially for more general purpose applications.
A leaked internal document from Google in 2023 claimed that open source AI will outcompete the incumbent proprietary models (e.g. from Google and OpenAI) over time.
Bee’s Alejandra did some research on the topic and summarized it on this LinkedIn post.
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