Google Unveils Gemini 2.5 Pro I/O: What it changed

Google Unveils Gemini 2.5 Pro I/O Edition (model name: gemini-2.5-pro-preview-05-06) with Enhanced Coding and Web Development Capabilities
Google has launched the Gemini 2.5 Pro Preview (I/O edition), an upgraded version of its flagship AI model, ahead of the annual I/O developer conference. This release introduces significant improvements in coding performance and web application development, positioning it as a leading tool for developers.
The Gemini 2.5 Pro I/O edition is available through the Gemini API, Google’s Vertex AI, and AI Studio platforms, maintaining the same pricing as its predecessor. It is also integrated into Google’s Gemini chatbot applications for both web and mobile devices.
Key enhancements include advanced capabilities in code transformation and editing, allowing for more efficient modification of existing code to meet specific objectives. The model excels in building interactive web applications, achieving the top position on the WebDev Arena Leaderboard—a benchmark assessing AI proficiency in creating functional and aesthetically pleasing web apps. Notably, it surpassed its previous version by 147 Elo points, indicating a substantial leap in performance.
In addition to web development, Gemini 2.5 Pro I/O edition demonstrates state-of-the-art performance in video understanding, scoring 84.8% on the VideoMME benchmark . These advancements reflect Google’s commitment to enhancing AI capabilities across multiple domains.
The release of this model comes amid intense competition in the AI sector, with companies like OpenAI and xAI preparing to launch their own high-performing models. By introducing the Gemini 2.5 Pro I/O edition ahead of schedule, Google aims to solidify its position at the forefront of AI development and provide developers with cutting-edge tools for innovation.
Competitive and Product Context
- AI race: Solidifies Google’s position against rivals like OpenAI (GPT‑4o) and Anthropic (Claude 3.7 Sonnet), who are also rolling out reasoning and multimodal updates.
- Subscription tiers: Rumors suggest new Google One AI plans—Gemini Pro and Gemini Ultra—may accompany the Advanced tier, hinting at future premium features and limits for video generation and multimodal workloads.

Gemini 2.5 Pro I/O: Developer Feedback and Reliability
- Error reduction: Addresses key feedback by lowering function‑calling errors and improving trigger rates for built‑in and user‑defined functions.
- Steerability: Maintains precise control over outputs, allowing developers to guide both code style and UI details when generating or transforming projects.
Looking Ahead
At Google I/O 2025, Google is expected to:
- Expand context window: Announce support for up to 2 million tokens, enabling large‑scale documents and long conversations .
- Broaden model suite: Preview additional Gemini flavors (e.g., “Flash” for simulation, robotics‑focused agents) and deeper integrations across Workspace and Cloud services .
With the Gemini 2.5 Pro Preview “I/O edition,” Google deepens its lead in AI‑powered developer tools, marrying cutting‑edge reasoning and multimodality with production‑grade reliability and UI integration—setting the stage for even more ambitious capabilities at this year’s I/O.
Availability and Access
- Early access: Available now via the Gemini API on Google AI Studio, Vertex AI, and in the Gemini chatbot (web and mobile) at the same pricing as Gemini 2.5 Pro.
- Rate limits: Preview grants increased rate limits for faster iteration during Google I/O build sessions.
Quick Start
CometAPI provides access to over 500 AI models, including open-source and specialized multimodal models for chat, images, code, and more. Its primary strength lies in simplifying the traditionally complex process of AI integration. With it, access to leading AI tools like Claude, OpenAI, Deepseek, and Gemini is available through a single, unified subscription.You can use the API in CometAPI to create music and artwork, generate videos, and build your own workflows
CometAPI offer a price far lower than the official price to help you integrate Gemini 2.5 Pro API, and you will get $1 in your account after registering and logging in! Welcome to register and experience CometAPI.CometAPI pays as you go,Gemini 2.5 Pro API (model name : gemini-2.5-pro-preview-03-25; gemini-2.5-pro-exp-03-25
; gemini-2.5-pro-preview-05-06
) in CometAPI Pricing is structured as follows:
- Input Tokens: $1 / M tokens
- Output Tokens: $8 / M tokens
For quick integration, please see API doc