Best open LLM reportedly cost just $3.5M to post-train

Kyrannio · x · 2026-09-22

@ankkala points out that the best open LLM in the world cost only about $3.5M to post-train — a striking contrast with the trillion-dollar valuations of frontier AI companies.

The figure underscores the massive gap in training investment between open and closed frontier models, and fuels debate over frontier-lab valuations.

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