Sapient 于 2025 年 6 月提出 Hierarchical Reasoning Model，并于今年 5 月开源其文本模型。该模型采用循环架构，通过反复更新内部状态来消耗推理算力，而非仅依赖传统 Transformer 堆叠。OpenAI GPT-6 Astra 目前正将潜在空间中的循环递归带入前沿讨论。
Sapient introduced the "Hierarchical Reasoning Model" in June 2025, then open-sourced its "Hierarchical Reasoning Model" Text model this May.
The model uses recurrent architectural loops, while OpenAI GPT-6 Astra is now putting looped recurrence in latent space into the frontier conversation.
The overlapping idea was: reasoning can spend computation by repeatedly updating internal state rather than relying only on a conventional transformer stack.
Sapient made that research decision before it had much industry validation, then published a model people could actually inspect and retrain.
来源：@rohanpaul_ai · x.com