Google announces Gemini 3.6 Flash and cybersecurity AI, teases 3.5 Pro and Gemini 4

Google announced a significant evolution of its AI models at I/O in May with the release of Gemini 3.5 Flash, and it’s not slowing down. The company revealed three new AI models today, including its first version of Gemini geared toward cybersecurity. However, none of the new models is the delayed Gemini 3.5 Pro, which was supposed to launch in June. Gemini 3.5 Flash, which was the star of the show at I/O, has already been deprecated. In its place, developers and users will find Gemini 3.6 Flash. Google makes the usual claims about this model—it’s marginally more capable and better at coding, and it has great multimodal features. Google says the changes to 3.6 Flash were made in response to user feedback on the 3.5 release. In general, Gemini 3.5 Flash didn’t appear to live up to Google’s promises around code generation. Perhaps that is simply a consequence of Google’s intense focus on efficiency as businesses have started to fret over the cost of AI tokens. Gemini 3.6 Flash will begin rolling out in the API today, and it will take over from 3.5 Flash in the Gemini app. Likewise, Gemini 3.5 Flash Lite is available to developers and in the Gemini app. Google also notes that you’ll see a lot of 3.5 Flash Lite in Google search, where its higher speed probably makes it ideal for AI Overviews. So those may get a smidge better. Google also has some news on upcoming AI models. First up will be a limited release of Gemini 3.5 Flash Cyber. This is Google’s first LLM tuned specifically for cybersecurity. The company says this model is almost as good at finding and fixing cybersecurity issues as the much larger and more expensive Claude Mythos. At the same time, it has the efficiency of a Flash model. Of course, Google acknowledges the “dual-use” nature of such models, which can just as easily be used to identify vulnerabilities for malicious purposes. The company borrows a page from Anthropic here, painting Gemini 3.5 Flash Cyber as too dangerous to release publicly. Instead, the model will launch soon as a limited pilot in Google DeepMind’s CodeMender agent, which is available exclusively to trusted partners and governments.