Announcement
River API is pitched as a way to make open-weight models beat GPT-6 Astra and Claude Opus 5.5 on chosen tasks
A post promoting the API claims that approach would cost less than 1% as much as the named models.
TLDR
A post promoting River API says users can fine-tune open-weight models to outperform GPT-6 Astra and Claude Opus 5.5 on tasks they care about for less than 1% of the cost. The author predicts most LLM usage worldwide will run on customized open-weight models within a few years.
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