Firehose

Poolside's co-CEO on how his small team of top researchers built a model factory capable of training Laguna S - a 118B MOE beating Thinky's ~1T open weights model... and this is just the beginning.

Researchers have developed a way to control the effort mode of large language models (LLMs), allowing them to switch between low-effort, medium-effort, and high-effort reasoning modes. This is achieved through training using reinforcement learning with verifiable rewards (RLVR), which provides a reward signal for correct and incorrect responses. AI summary

Kimi K3, a 2.8T-parameter open model, has been released by Moonshot AI, rivaling the largest closed models and surpassing prior open competitors, with a comparable intelligence to Opus 4.8 and GPT-5.5, but behind Fable 5 and GPT-5.6 Sol. The model's pricing is at Sonnet 5 levels, with a cost per task of $0.94, and it uses Kimi Delta Attention (KDA) and Attention Residuals (AttnRes) for improved performance. AI summary