Gemini 3.5 Pro Targets July 17 With 2M Token Context

Google's Gemini 3.5 Pro is reportedly targeting July 17 for general availability after slipping from an original June window, according to multiple outlets including Geeky Gadgets and TechTimes. The model was originally expected in June after Sundar Pichai told the Google I/O audience on May 19 to "give us until next month." That deadline passed without a public release, and Google has since pointed to July while citing quality refinements from enterprise testing. The delay followed a significant architectural decision. Google DeepMind reportedly scrapped its Gemini 2.5 Pro base model entirely, opting for a ground-up rebuild focused on mathematical reasoning, SVG generation, and image quality. The rebuilt model is expected to feature a 2 million token context window and a new Deep Think reasoning layer designed for complex, multi-step problem-solving. Neither specification has been confirmed in official Google documentation. At I/O 2026, the company confirmed that Gemini 3.5 Pro exists, is being used internally, and would follow the release of Gemini 3.5 Flash. As of July 13, the public Gemini API lists gemini-3.5-flash and gemini-3.1-pro-preview as available model IDs with no gemini-3.5-pro endpoint published. Estimated pricing of $12-15 per million input tokens would make it pricier than GPT-5.6. Independent benchmarks and official pricing remain unpublished.