Google is about to make a big move? Gemini 3.5 Pro rumored to launch on July 17, front-end outperforms Fable 5.

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Google has unveiled a major trump card in the large model competition.

According to leaked information, Gemini 3.5 Pro will be officially released on July 17th, reportedly having made a leap forward in both frontend and visual code generation capabilities, outperforming Anthropic's Fable 5 in multiple tests, but still lagging behind in hardcore reasoning and complex engineering tasks.

Behind this long-awaited flagship model lies a more thorough technological overhaul.

According to tech media Geeky Gadgets, Google DeepMind abandoned the original 2.5 Pro base and instead conducted a completely new pre-training for Gemini 3.5 Pro, pushing the release date from the originally planned June 2026 to July 17th.

This decision is interpreted by outsiders as Google voluntarily choosing quality over speed, in response to dual pressures from OpenAI's GPT-5.6 and Anthropic's Fable 5.

For the market, the significance of this release goes beyond the launch of a new model. It is also reported that Google is developing an image model called Nano Banana Pro based on this new foundation, targeting OpenAI's GPT-Image 2. This means Google is trying to advance simultaneously on text/code and image generation fronts, further intensifying competition in the AI industry.

Why the two-month delay? Complete reconstruction

The delay of Gemini 3.5 Pro is not due to conventional parameter tuning, but rather a more fundamental reconstruction.

According to leaked information, the extra time was used by Google to completely redo the pre-training process and abandon the old base plan. This means Gemini 3.5 Pro is not simply a scaled-up version of Gemini 3.5 Flash, but is rebuilt from a brand new foundation.

Previously at the I/O conference, Google DeepMind released the Gemini 3.5 series in one go, but only the lightweight Gemini 3.5 Flash went live that day, with the flagship Pro model left backstage. Google CEO Sundar Pichai then promised “just one more month,” but as June passed, the Pro version had still not arrived, and the official line shifted to “July,” without a specific date.

Geeky Gadgets, citing Universe of AI, noted that this retraining aims to remedy key performance shortcomings, focusing on improving mathematical reasoning, SVG scene generation accuracy, and image generation quality to enhance competitiveness against GPT-5.6 and Fable 5.

Dominance in frontend: SVG generation is the highlight

According to the leaked information, Gemini 3.5 Pro shows a distinct "subject bias"—frontend and visual code generation are its most prominent strengths.

Based on feedback from multiple developers on the X platform, the leaked version performs exceptionally in the following aspects: the design taste of the generated UI is close to professional designers, with significantly improved color schemes and sense of layers; SVG generation capabilities are vastly enhanced, producing complex vector graphics in one go with higher accuracy; complete frontend pages can be generated with a single prompt, featuring clear structure.

Developer QASIM-livelifewithai found in testing that Gemini 3.5 Pro could generate an SVG image highly similar to Gemini leader Logan Kilpatrick, attracting widespread attention. In developer circles, the term "mogging" (utter domination) has caught on to describe how Gemini 3.5 Pro crushes its rivals in frontend tasks.

In anonymous testing on LM Arena, Gemini 3.5 Pro indeed outperformed many competitors in frontend and visual tasks, and had a slight edge over Fable 5 in terms of artistic conception and atmosphere.

Hardcore shortcoming: Still lags behind in reasoning and engineering tasks

The advantage in frontend does not mean an all-around lead.

In the toughest agent tasks, repository-level software engineering, and long-chain tasks, Gemini 3.5 Pro still cannot shake the status of Fable 5 and GPT-5.6. According to the leaker, even with the new base, Gemini 3.5 Pro "still can’t beat Fable 5 or GPT-5.6 in the most difficult agent and long-chain tasks."

Fable 5 is strong in repository-level code debugging and deep architecture renovation, scoring outstandingly in benchmarks like SWE-Bench Pro; GPT-5.6 maintains a leading position in multi-step reasoning tasks. An earlier benchmark leak showed that Gemini 3.5 Pro had clear shortcomings in reasoning, coding, and long-term task execution, with its comprehensive ranking behind these two competitors.

This "subject bias" trend also partly explains Google’s market positioning logic—using differentiated advantages in frontend and visual code generation to carve out specific user segments in a fiercely competitive market.

Dual layout: One foundation, two battlefields

The strategic significance of Gemini 3.5 Pro goes beyond the model itself.

Leaked information indicates that Google is developing an image generation model called Nano Banana Pro based on the new foundation of Gemini 3.5 Pro, directly targeting OpenAI’s GPT-Image 2. This means Google is attempting to leverage a single pre-training investment to drive both text/code generation and image generation product lines.

At the same time, Google is also pushing forward with the development of Gemini 4 Flash, targeting lightweight, speed-first scenarios. Multiple product lines running in parallel reflects DeepMind’s overall differentiation strategy—using different models to cover different market needs, rather than betting everything on a single flagship.

Regarding pricing, Geeky Gadgets points out that Google is inclined to position Gemini 3.5 Pro as a more cost-effective option to attract cost-sensitive enterprise users, seeking a differentiated foothold outside the high-end market dominated by OpenAI and Anthropic.

Competition landscape: The battle of the titans has no end

The delayed launch of Gemini 3.5 Pro is a microcosm of the current AI arms race intensity.

OpenAI’s GPT-5.6 is expected to be released between July 7th and 9th, with significant improvements in speed, reliability, and output accuracy, and with strengthened compliance and ethics frameworks in cooperation with the US government, further consolidating its industry-leading position. Anthropic’s Fable 5 continues to lead in heavy engineering tasks.

In the past six months, OpenAI and Anthropic have taken turns dominating the AI spotlight, while Google has been relatively quiet. If Gemini 3.5 Pro can debut as scheduled on July 17, and its frontend capabilities match the leaked information, it will be a key step for Google to regain discourse power in this race.

Whether Gemini 3.5 Pro will arrive on time and whether it can triumph in the large model brawl, the market is waiting for Google’s answer.

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