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Man who firebombed Sam Altman's home was likely driven by AI extinction fears

A man threw a firebomb at OpenAI CEO Sam Altman’s San Francisco home in the middle of the night. The suspect was a member of the PauseAI Discord server and had posted online about AI driving humanity to extinction.

Read full article about: OpenAI employee tries to explain usage limits of the new ChatGPT Pro plans

OpenAI recently expanded its pricing options to include a $100 plan. But the company hasn't been particularly clear about how the usage limits differ from the existing $200 plan. OpenAI employee Thibault Sottiaux tried to clear things up, with an emphasis on trying.

According to Sottiaux, the $100 plan offers at least ten times the Plus usage, while the $200 plan offers at least twenty times. But both figures only reflect a temporary 2x usage boost that runs through May 31. On top of that, the $200 plan has had this boost since February, but OpenAI never explicitly documented it.

Once the boost expires at the end of May, usage could drop to at least five times and ten times Plus usage, respectively. Sottiaux didn't directly confirm these base values, though.

The confusion started because OpenAI's pricing page listed "5x or 20x usage." According to Sottiaux, the misleading labels led many users to assume the 2x boost would double both numbers to ten times and forty times. In reality, "20x" was already the boosted value for the $200 plan, while "5x" represented the base value of the cheaper plan.

Read full article about: Anthropic seeks advice from Christian leaders on Claude's moral and spiritual behavior

Anthropic invited roughly 15 Christian leaders from Catholic and Protestant churches, academia, and business to a two-day summit at the end of March. According to the Washington Post, the $380 billion startup was looking for guidance on how to handle the moral and spiritual behavior of its chatbot Claude. Topics ranged from how to respond to grieving or at-risk users to whether an AI could be considered a "child of God."

Participants like Silicon Valley-based Catholic priest Brendan McGuire and Notre Dame professor Meghan Sullivan said they were convinced the company's interest was genuine. "They’re growing something that they don’t fully know what it’s going to turn out as," said McGuire.

The summit is another sign that Anthropic tends to view an AI model as something beyond a piece of technology. The company isn't alone in this: OpenAI CEO Sam Altman has also leaned on spiritual metaphors in the past. He's said, for example, that OpenAI was trying to develop "magical intelligence in the sky" and that he felt "on the side of the angels."

Arcee AI spent half its venture capital to build an open reasoning model that rivals Claude Opus in agent tasks

US start-up Arcee AI spent roughly half its total venture capital to train Trinity-Large-Thinking, an open reasoning model with 400 billion parameters designed to take on Claude Opus in agent tasks.

Google's Gemma 4 puts free agentic AI on your phone and no data ever leaves the device

Google’s new open-source model, Gemma 4, processes text, images, and audio completely on-device. Using agent skills, the AI can independently tap into tools like Wikipedia or interactive maps; no cloud required.

Read full article about: Overworld's Waypoint-1.5 brings AI-generated 3D worlds to Mac and Windows on consumer hardware

AI startup Overworld has released Waypoint-1.5, an update to its real-time world simulation system that generates interactive 3D worlds on consumer hardware. The software now runs on Mac and Windows for the first time, with two model tiers: 720p at 60 frames per second for high-performance systems, and 360p for a broader range of gaming PCs with NVIDIA RTX graphics cards and eventually Apple Silicon.

Compared to the earlier Waypoint 1.0 and 1.1 releases, the new version delivers noticeably better visual quality, improved efficiency, and stronger system performance, all while being half the size. Overworld says the model was trained on roughly 100 times more data than the original version.

Comparison between Waypoint 1.1 and 1.5. The visual quality has increased significantly with better efficiency. | Image: Overworld

Users can install the software locally through the Biome runtime environment or try it out via browser streaming at Overworld.stream. More details are available at over.world.