Google Releases Gemma 4 Open Models, Switches to Apache 2.0 License Source: https://www.latent.space/p/ainews-gemma-4-the-best-small-multimodal Google DeepMind officially launched the Gemma 4 series on April 2. The release includes four model variants: a 31B dense model, a 26B MoE model (A4B with ~4B active parameters), and two lightweight edge models E2B and E4B designed for mobile and IoT devices. The headline change is the license—Gemma 4 adopts Apache 2.0, a dramatic shift from the commercial restrictions that constrained earlier Gemma releases. Developers can now freely modify, deploy, and commercialize these models without monthly active user caps or usage restrictions.

This issue covers news from April 1 to April 3. Anthropic’s Rough Week: Claude Code Source Code Fully Exposed Source: https://thenewstack.io/anthropic-claude-code-leak/ Anthropic has had a difficult week. On March 26, Fortune reported that a CMS configuration error exposed nearly 3,000 internal files, including a draft announcement for a new model codenamed “Mythos” (internally also called “Capybara”), described as the company’s “most capable AI model to date.” Less than a week later, on March 31, security researcher Chaofan Shou discovered that Anthropic had accidentally included a 59.8MB source map file in the Claude Code v2.1.88 npm package.