The Signal

SpaceXAI Releases Grok 4.6: A 500K-Context Frontier Model Tuned for Long-Running Agents, Coding, and Knowledge Work

xAI's released Grok 4.6, a post-training upgrade to Grok 4.5 that doesn't add more parameters. The 500K-context model is tuned for long-running agents, coding, and knowledge work.

OpenAI introduces ‘Ultrafast,’ a new mode that makes GPT-5.6 Sol work at 14x the speed

OpenAI's launched a new mode called Ultrafast that accelerates its GPT-5.6 Sol model. The update makes the system work fourteen times faster.

Gemini 3.7 Flash lands with coding gains and undercuts its three-week-old predecessor’s price by 50%

Google's released Gemini 3.7 Flash, a new version of its Flash model arriving just three weeks after the 3.6 iteration. It brings coding gains and undercuts its predecessor's price by 50%.

Deepseek ships improved V4 Pro, open-sources its agent software, and raises API prices

Deepseek has released version 4-Pro-0813 and open-sourced its agent software. It's also increased its API costs, effective August 16 at 4:00 p.m. UTC.

The White House Is Going to Expand Its AI Policy

The White House has announced it's expanding its AI policy. Officials plan to revise the Trump administration's guidelines and broaden oversight of AI models.