Google DeepMind releases Gemini 4 Carbon with gains across the board

google deepmind released gemini 4 carbon, its latest frontier model, two weeks after argon. carbon achieved 59 points on the artificial analysis intelligence index v5, up from argon's 50 points. it is designed for multi-day, autonomous development workflows and features advanced cybersecurity capabilities, currently undergoing the u.s. government's voluntary pre-testing process. carbon leads the overall aa index but trails claude opus 5.5 in agentic coding. google reports improvements in scientific reasoning, multimodal understanding, and full-stack web development.