Castform, the AI training platform from Benchmax, has added supervised finetuning (SFT) support, enabling developers to post-train models via next-token prediction on demonstration data. In a demonstr…
A joint post from Neon, Databricks' serverless-Postgres arm, and Castform, an RL post-training startup, claims a 4B open-weights model can match GPT-5.6 Sol on agentic retrieval at roughly 1/100th the…
Castform, an AI startup, announced that its reinforcement learning post-training platform combined with Neon's Lakebase Postgres and Search extensions enables open-weights models to match or beat fron…
A developer trained a 4-billion-parameter language model using reinforcement learning to rewrite AI-generated text into more human-sounding prose, using AI detectors as reward functions. The project, …