Google I/O 2026: Google announces Gemini 3.5 models and Gemini Spark AI agent

During the highly anticipated Google I/O 2026 event, the tech powerhouse from Mountain View introduced its latest flagship AI innovations, the Gemini 3.5 Flash and Gemini 3.5 Pro models. According to the company, the groundbreaking Flash model boasts a performance that is four times quicker than existing frontier models on the market. In addition to the impressive AI models, Google debuted Gemini Spark, a cutting-edge personal AI agent designed to operate continuously, even when the user's device is turned off. This innovative assistant can seamlessly integrate with Google applications like Sheets and Gmail, enabling users to effectively manage and organize tasks across various services. The rollout for the Gemini 3.5 Flash model begins today, making it available across all of Google's products and APIs. Meanwhile, the Gemini 3.5 Pro is slated to launch in June. Initially, Gemini Spark will be accessible to AI Ultra users located in the United States. Stay tuned for more updates as this story continues to unfold.