Released on April 2, 2026, Gemma 4 represents a landmark shift in Google’s approach to open-source AI. Built on the same world-class research as the Gemini 3 flagship, Gemma 4 is designed to maximize "intelligence-per-parameter," allowing small, efficient models to outperform those many times their size.
For the first time in the series, Google has moved to a fully permissive Apache 2.0 license, granting developers complete commercial freedom and fueling a new wave of local-first AI innovation
The Gemma 4 Family: Sizes & Specs
Gemma 4 is categorized into two tiers: Edge (for mobile/IoT) and Workstation (for servers/GPUs).
| Model Variant | Parameters | Architecture | Best For |
| Effective 2B (E2B) | 2.3B Effective | Dense / PLE | Smartphones, Raspberry Pi, IoT |
| Effective 4B (E4B) | 4.5B Effective | Dense / PLE | High-speed edge inference, mobile |
| 26B MoE | 26B Total | Mixture of Experts | Low-latency server use, fast coding |
| 31B Dense | 31B Total | Dense | Max quality, fine-tuning, reasoning |
Key Breakthroughs
1. Native Multimodality & Audio
Unlike previous generations that relied on external adapters, Gemma 4 natively processes Text, Images, and Video. Remarkably, the E2B and E4B models include native audio input, enabling real-time speech recognition and translation directly on-device without an internet connection.
2. "Thinking Mode" & Advanced Reasoning
Gemma 4 introduces a dedicated thinking mode that allows the model to perform multi-step planning and deep logic. On mathematical benchmarks like AIME 2026, the 31B model scores an astounding 89.2%, a massive leap from the 20.8% seen in Gemma 3.
3. Agentic Workflows
The models are "agentic by design." Native support for function calling and structured JSON output is baked into the architecture. This means Gemma 4 can autonomously interact with APIs, use tools, and execute complex workflows without "hallucinating" the format.
4. Massive Context Windows
The edge models feature a 128K context window, while the larger variants offer up to 256K. This allows users to drop entire code repositories or massive legal documents into a single prompt for analysis.
Important Usage Scenarios
- Private Coding Assistants: Because the 26B MoE model can run on a single consumer GPU, developers can use it as a local-first coding partner. It can analyze entire codebases privately, ensuring proprietary code never leaves the local machine.
- On-Device Multilingual Agents: Supporting over 140 languages, Gemma 4 is being used to build real-time voice translators for field workers and healthcare providers in remote areas with no connectivity.
- Robotics & Physical AI: On platforms like NVIDIA Jetson, Gemma 4 powers autonomous robots that can "see" their environment, "hear" voice commands, and reason through tasks before acting.
- Digital Sovereignty: For enterprises with strict data compliance, Gemma 4 provides a "frontier-level" model that can be deployed behind a private firewall, offering a balance of high performance and absolute data control.
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