Gemini-exp-1206 Quietly Returns to Google’s Gemini App—But Likely a Bug

Gemini-exp-1206 Quietly Returns to Google’s Gemini App—But Likely a Bug

It looks like Gemini-exp-1206, the 2.0 Experimental Advanced model, has made an unexpected comeback in the Gemini app. As someone who tracks every tweak in Google's ecosystem, this sudden reappearance immediately caught my attention—and it’s sparking questions across the AI community. Image:Google Why Gemini-exp-1206’s Return Is a Big Deal Google originally launched the 1206 model in December 2024, promoting it as a top-tier tool for handling advanced tasks like coding, complex math, instruction following, and high-level reasoning. It quickly became a fan favorite among users like me who rely on powerful LLMs for productivity and creativity. However, Google later phased out this model in favor of newer experimental versions—first with 2.0 Pro Experimental in February 2025, and then 2.5 Pro Experimental just last month. Naturally, it came as a surprise when paid subscribers began spotting 1206 again in the model picker on gemini.google.com this Friday morning. A Likely Bug—But Still Fu…