Tags: AI development tools

New York‑based Antioch, a simulation platform for robot developers, announced an $8.5 million seed round that values the company at $60 million. Led by A* and Category Ventures, the round also includes MaC Venture Capital, Abstract, Box Group and Icehouse Ventures. Antioch’s technology aims to shrink the "sim‑to‑real" gap that hampers autonomous systems, letting engineers train robots in high‑fidelity virtual warehouses instead of costly physical testbeds. The funding will accelerate product development and expand the startup’s customer base, which already includes several large multinationals. Read more

A recent packaging error released more than 512,000 lines of Claude Code’s source code, exposing unreleased features such as a Tamagotchi‑style coding pet and an always‑on background agent called KAIROS. Anthropic clarified that no customer data was compromised and called the incident a human‑error mistake, while analysts warned that the leak could aid bad actors and highlight the need for stronger operational safeguards. Read more

Anthropic announced its new Claude Sonnet 4.5 model, highlighting a 30‑hour autonomous coding run that produced roughly 11,000 lines of code for a chat application. The company touts the model as the leading solution for real‑world agents, coding, and computer use, noting strong performance in cybersecurity, financial services, and research. Early testers such as Canva reported success with complex, long‑context tasks. Anthropic also introduced developer‑focused updates—including virtual machines, memory, and multi‑agent support—to help build custom AI agents, positioning the launch amid fierce competition from OpenAI and Google. Read more