Google DeepMind launched Gemma 4, a family of open AI models including 31B Dense, 26B MoE, and mobile-optimized E4B/E2B variants that can run locally on personal hardware. The models feature native tool use for autonomous agents, up to 256K context length, multimodal capabilities, and are released under the fully permissive Apache 2.0 license. Performance benchmarks show dramatic improvements like Codeforces ELO jumping from 110 to 2150, with the 31B model ranking #3 on Arena leaderboards. This democratizes access to state-of-the-art AI capabilities for developers and enterprises without dependence on cloud APIs or restrictive licensing.