AI Chat is a feature that allows you to interact with AI in a conversational format. When you input text, the AI reads your message and responds accordingly.
For example, you can ask:
“Can you write a caption for Instagram?”
“Rewrite this sentence in simpler language.”
“Give me five name ideas for a new product.”
The AI will respond as if you’re having a real-time conversation.
mitsumonoAI allows you to choose from multiple models—including ChatGPT, Claude, and Gemini—as well as Sensei AI, which provides expert knowledge tailored to specific industries.
You can use AI Chat as a brainstorming partner, a sounding board for your ideas, or a tool to help structure your thoughts when you’re feeling stuck.
mitsumonoAI allows you to choose from the latest generative AI models such as ChatGPT, Claude, and Gemini.
When you input text (a prompt), the AI generates the most suitable response based on that input.
Each model has its own strengths in terms of writing style and areas of expertise, so selecting the right one for your purpose can lead to more effective outcomes.
Whether you’re brainstorming ideas, drafting content structures, refining your writing, or casually exploring possibilities, the AI models offer flexible support across a wide range of use cases.
Below is a comparison chart of the AI models integrated into mitsumonoAI. Use this as a guide to select the most suitable model based on its features, token consumption, and ideal use cases.
Model Name | Features | Token Usage | Recommended Use Cases |
GPT-5.2 | A latest-generation model combining high precision and versatility. With extensive knowledge and stable reasoning capabilities, it covers a wide range of tasks from business assistance to idea generation. It quickly and accurately grasps context to deliver practical, highly reliable outputs. | Medium | • Broad business support and practical operations• Idea generation and content creation• Precise responses based on contextual understanding |
GPT-5.2 Thinking | An advanced reasoning model specialized in deep thinking processes. It excels at organizing complex conditions and conducting multi-stage considerations, delving into the essence of problems to derive optimal solutions. It powerfully supports high-level decision-making through careful and consistent analysis. | Medium | • Organizing complex conditions and problem-solving• Strategic planning requiring multi-stage consideration• Support for advanced judgment and decision-making |
GPT-5.1 | The latest next-generation integrated AI model. Enhances daily decisions and outcomes with advanced analysis and natural conversational abilities. | Medium | • Real-time decision-making and optimization• Innovative idea generation and strategic planning |
GPT-5.1 Thinking | A specialized model for advanced reasoning. Excels at hypothesis testing and multi-faceted analysis, responding with consistent logic. Precisely supports strategy development, complex problem-solving, and creative idea generation. | Medium | • Strategic hypothesis testing and analysis• Decision-making based on multi-faceted information• Deriving logical solutions for complex challenges |
GPT-5 Thinking | Excels in advanced reasoning, long-form generation, and complex problem-solving. “Thinking” mode enables multi-step reasoning for high-precision, safe, and scalable analysis. | Medium | Complex decision-making, structured problem-solving, strategy formulation |
GPT-5 | The latest and top-tier model. Strong in reasoning, long-form generation, and complex task resolution. Provides precise outputs and clear reasoning to support daily decision-making. | Medium | Advanced reasoning, long-form generation, complex problem-solving, strategic planning |
GPT-5-mini | Balanced between speed and quality. Ideal for daily tasks, summarization, code assistance, and multimodal workflows. Enables efficient, low-cost operations. | Small | Daily research, summarization, code assistance, workflow optimization |
GPT-5-nano | Fast startup and lightweight operation. Supports email drafting, meeting notes, task organization, quick summaries, and translation—runs smoothly even on internal PCs. | Minimal | Email writing, task organization, short summaries, translation |
GPT-4.1 | Standard AI model. Suitable for accuracy-focused tasks like complex problem-solving, detailed reports, and proposal writing. Strong in decision support. | Medium | Project planning, summarization, marketing materials |
GPT-4.1 mini | Balanced model for performance, speed, and cost. Useful for daily chat interactions, document generation, and summarization. | Small | Draft writing, idea generation |
GPT-4.1 nano | Ultra-lightweight, high-speed model. Ideal for real-time responses such as short Q&A, translation, and task organization. | Minimal | Bullet points, simple tasks |
GPT-4o | OpenAI’s standard model. Handles a wide range of tasks through natural conversation. Excellent for creative generation and problem-solving with image input. | Medium | Visual ideation, sentiment analysis |
Claude 4.5 Opus | Claude's latest top-tier AI model, featuring advanced comprehension and generation capabilities to respond to diverse challenges with high precision. It delivers consistent quality from broad business support to creative tasks and has strong multilingual features.documentation. | High | Long-text summarization and analysis• Advanced text and code generation |
Claude 4.5 Opus Thinking | An advanced analysis-specialized mode that deeply traces thought processes, excelling in complex reasoning and design considerations. It meticulously organizes problem structures to help derive optimal solutions. | High | Idea comparison and discussion• System design discussions |
Claude Sonnet 4.5 | General-purpose model covering a wide range from natural language generation to code samples. Useful for everyday documentation and development support. | Medium | Meeting minutes, explanatory writing |
Claude Sonnet 4.5 Thinking | Enhanced reasoning version of Sonnet 4. Excels in causal analysis, algorithm design, and code optimization requiring logical thinking. | Medium | Evaluation, analytical reasoning support |
Claude haiku 4.5 | Minimal model. Suitable for short-form generation and simple code responses. Ideal for low-resource environments or basic test support. | Small | Inquiries, short text generation, chat |
Gemini 3 Pro | Google's top-tier model. A next-generation AI that enhances conventional reasoning with a reinforced "agent function" to autonomously execute complex tasks. | Medium | • Complex project management and execution• Autonomous information gathering and analysis• Support for multi-step decision-making processes |
Gemini 2.5 Flash | Speed-optimized model. Ideal for short chat interactions, brainstorming, and memo creation where response time is critical. | Small | Summarization, organization, post design |
Gemini 2.5 Pro | High-accuracy, multifunctional model. Supports document creation, code assistance, and image understanding in an all-in-one workflow. | Medium | Document creation, code assistance, project planning |
Gemini 3.0 Flash | A standard model that combines overwhelming speed and stability. Recommended for responding to inquiries, summarizing, and generating everyday text. | Small | Social media copywriting, one-off proposals |
Gemini 2.5 Flash-Lite | Lightweight version of Flash. Executes simple Q&A tasks quickly and at low cost. Runs smoothly even on internal PCs. | Minimal | Ultra-short text, add-on sentences |
grok 4.1-fast-reasoning | Combines real-time X data with logical reasoning to deliver fast, in-depth analysis. | Minimum | Trend prediction, Breaking news verification |
grok 4.1-fast-non-reasoning | Skips the reasoning process to provide overwhelming speed and unique wit. | Minimum | Brainstorming, Instant chat response |
Grok-4 | Large-scale model specialized in generating and discussing the latest news on X (formerly Twitter). Excels in information gathering and conversational responses. | Medium | Post creation, trend ideation |
Perplexity Sonar-pro | Advanced search model designed for complex queries. Provides deep content understanding and improved citation accuracy. | Medium | Research-based proposals, investigation-driven planning |
Perplexity Sonar | Lightweight, cost-efficient search model optimized for real-time web retrieval and practical answers. | Small | Research, summarized investigation, real-time information collection |
In addition to general-purpose models like ChatGPT, mitsumonoAI features Sensei AI—an industry-specialized AI consultant equipped with practical knowledge tailored to specific business fields.
One of its key strengths is the ability to provide industry-relevant ideas and actionable advice without requiring complex prompts.
You’re unsure how to plan and promote a seasonal menu for a restaurant
You want practical guidance on how a beauty salon can make better use of LINE
You’re considering how to position your legal services as an administrative scrivener
You need advice on off-season customer acquisition for a lodging facility
Sensei AI
Sensei AI is a company-supervised AI consultant, trained with specialized knowledge in digital transformation (DX) and digital marketing tailored to each industry. Unlike general-purpose AI models, Sensei AI delivers more practical and actionable responses based on our expertise, experience, and proven know-how.
The more specific your prompt, the better the result
Clearly define conditions and context—such as “what content,” “for whom,” and “in what tone.” This helps the AI align with your intent.
Specify the structure for a well-organized output
For example: “Use an introduction–problem–proposal–conclusion format” or “List five options.” Clear structure leads to more readable results.
Use AI output as a draft or starting point
Treat the results as brainstorming material rather than final deliverables. This is especially useful for internal discussions or organizing your thoughts.
Refine your request to improve accuracy
Follow up with comments like “Make it more concise” or “Use a more casual tone” to steer the AI closer to what you want.
Mission data is not referenced
AI Chat does not use your registered “My Missions.” Be sure to include any relevant background in each prompt manually.
Always verify critical information
The content generated is for reference only. For numbers, facts, legal matters, or medical information, always verify accuracy yourself.
Vague prompts produce vague results
Avoid unclear instructions like “make it sound nice” or “summarize it well.” Instead, clarify your goal and target audience to improve precision.
Save important outputs
To avoid data loss, save outputs that may be reused or shared internally to your local environment or project folders.