The report shows that by keeping DeepSeek V4's weights unchanged and redesigning the session‑management layer with J‑Space, the V4‑Pro‑0813 model beats Fable 5 and leads in seven out of nine benchmarks, while explaining the "thought‑chain diode" phenomenon and proposing a three‑layer engineering solution.
Anthropic’s recent paper uncovers a “global workspace” inside Claude called J‑space, showing how the model stores and manipulates internal tokens, how altering this space changes outputs, and why this insight matters for AI interpretability, safety, and the debate over machine consciousness.
The article analyzes three concurrent AI trends—Tencent’s Hy 3 emphasizing reliability for agents, Anthropic’s J‑Space revealing internal activations that let models sense testing, and OpenAI’s rumored GPT‑5.6 Sol promising unprecedented inference speed—highlighting a shift toward controllable, auditable AI systems.
Anthropic’s new study reveals a spontaneously emergent “J‑space” inside Claude that acts as a global workspace, allowing researchers to read and even manipulate the model’s internal, unspoken thoughts across tasks such as error detection, protein function inference, and multi‑step reasoning.
Anthropic’s recent study reveals a hidden "J space" inside Claude that silently holds concepts the model considers but does not output, and through a Jacobian‑lens technique the researchers can read, edit, and control this workspace, showing its role in multi‑step reasoning, task flexibility, and AI safety monitoring.
