Maison AI Integrates Next-Generation AI Model "GPT-5.4" Series, Completely Revamping Conventional GPT-5 Systems for Enhanced "Speed" and "High-Precision" Utilization

AuthenticAI Inc. (Headquarters: Minato-ku, Tokyo; Representative Director: Toru Ueda; hereinafter "AuthenticAI"), a developer and provider of enterprise generative AI platforms, has implemented a major update to its generative AI platform "Maison AI." We are pleased to announce that this update has completely revamped the conventional GPT-5 series models, introducing the higher-performance and optimized next-generation "GPT-5.4" series (four lineups).

AuthenticAI aims to realize a society where everyone can naturally master generative AI, and provides the enterprise generative AI platform "Maison AI." Beyond merely providing tools, we promote the transformation of our customers into "AI-native companies" through "accompanying support" that draws out corporate creativity and strategy through generative AI.

■ Background: The era of AI is shifting from "using" to "choosing" according to purpose

As the social implementation of generative AI rapidly progresses, on-site users are increasingly expressing concrete needs tailored to practical work, such as "I want to get answers faster," "I want it to think more deeply about complex problems," and "I want to reduce the waste of using an excessive model for the difficulty of the task."

This revamp to the "GPT-5.4" series responds to these expectations for both "speed" and "accuracy," and "efficiency through optimal model selection." With four optimized lineups based on conventional models, it delivers the highest level of performance in all business scenarios, from daily chats to advanced data analysis. (※1)

（※1）Quoted from OpenAI's announcement "Introducing GPT-5.4 mini and nano"

https://openai.com/ja-JP/index/introducing-gpt-5-4-mini-and-nano/

■ Proven, overwhelming "practical execution capability" in major benchmarks

The latest "GPT-5.4" goes beyond mere text generation, demonstrating its performance as an "agent-based AI" capable of autonomous decision-making and complex operations in various benchmarks.

Computer operation performance surpassing humans:

In "OSWorld-Verified," which measures the ability to directly operate a desktop environment and autonomously execute workflows, GPT-5.4 recorded a success rate of 75.0%. This result surpasses the average human performance (72.4%), demonstrating that AI can act as a proxy for advanced business processes. (※2)

Deepening of engineering and logical reasoning:

It achieved 75.1% in "Terminal-Bench 2.0," which measures software engineering capabilities, and 91% accuracy in "BigLaw Bench" for the legal domain. Factual errors (hallucinations) have been reduced by approximately 33% compared to conventional models, enabling highly reliable practical support. (※3)

Vast contextual understanding of 1 million tokens:

Supports a context window of up to 1,050,000 tokens. It can analyze several years of financial reports or hundreds of pages of legal contracts in bulk, performing highly accurate inference while maintaining information consistency.

*In Maison AI, the maximum number of characters that can be remembered in a single conversation is 360,000 characters.

（※2）Quoted from OpenAI's announcement "Introducing GPT-5.4"
https://openai.com/ja-JP/index/introducing-gpt-5-4/

（※3）Quoted from OpenAI's announcement "Introducing GPT-5.4 mini and nano"

https://openai.com/ja-JP/index/introducing-gpt-5-4-mini-and-nano/

■ New Generation "GPT-5.4" Series: Four Lineups

■ New workflows brought by "faster, higher performance"

This revamp allows users to select the optimal "intelligence" for their specific tasks. By enabling model selection that matches purpose and means—such as "I need speed now, so I'll use nano" or "This analysis is complex, so I'll leave it to the inference model"—it reduces the stress of AI utilization and maximizes time for creative work.

Maison AI will continue to rapidly incorporate the latest generative AI technologies into its platform, evolving further as an "AI transformation partner" supporting corporate change.

For more details on this update, please visit the following page:
https://maisonai.io/blogs/update/ver1-87

■ Main functions and usage scenarios

AuthenticAI will continue to rapidly incorporate the latest AI models and support AX (AI Transformation) for companies in all industries. We will accelerate the creation of new value born from human-AI co-creation and pioneer the frontier of AI agent technology.

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■ Generative AI Platform "Maison AI" Service Overview

"Maison AI" provided by AuthenticAI Inc. is a generative AI platform specialized for creative industries such as fashion, interior design, and miscellaneous goods. It is equipped with 14 types of high-performance generative AI models, including GPT-5 and Gemini 3 Pro, demonstrating high performance in both language understanding and image generation. Furthermore, it features a multifunctional toolset including AI agents tailored for various specialized professions such as designers and merchandisers, enabling utilization for diverse needs from operational efficiency improvement to new business development and educational applications.

"Maison AI" Official Service Website: https://maisonai.io/