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DEISO Mirai AI Pro v4.0 is a major platform and intelligence release that expands Mirai beyond prompt refinement into a more complete DEISO AI assistant environment. Released on April 17, 2026, this version introduces a unified cross-device interface, stronger interaction capabilities, an updated model, and a deeper execution-guidance architecture designed for enterprise sustainability use cases. If you have used earlier versions of Mirai, v4.0 represents the most significant upgrade to the platform’s usability, intelligence, and commercial integration to date. Release date: April 17, 2026
Version: v4.0
Product: DEISO Mirai AI Pro

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What’s new in v4.0

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New unified AI assistant interface on desktop and mobile

v4.0 introduces a brand new assistant interface designed as a unified experience across both desktop and mobile environments. You now get a consistent interaction model regardless of screen size, which means you can move between devices without losing clarity, orientation, or workflow continuity. The new interface strengthens Mirai’s role as a structured DEISO guidance layer rather than a lightweight chat widget. It supports a more serious product presentation, clearer feature discovery, and a more stable user journey from your first question to deeper engagement — whether you are browsing quickly on mobile or working intensively from a desktop.

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Downloadable chat sessions

You can now download your Mirai chat sessions directly from the interface. This lets you retain structured guidance, decision pathways, technical recommendations, and response history for later review, internal discussion, or project documentation. This matters especially if you are an enterprise or technical user who needs to preserve conversations as working references rather than treating each interaction as disposable. You can capture, share, archive, and revisit DEISO guidance generated during project exploration and solution evaluation.

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Upgraded to ChatGPT 5.2 model

Mirai AI Pro v4.0 updates the underlying assistant intelligence to the ChatGPT 5.2 model, improving response quality across structure, coherence, reasoning depth, and controlled guidance behavior. This upgrade supports more reliable interpretation of technical sustainability questions, multi-option project scenarios, and complex execution-path decisions. The model upgrade also helps Mirai produce stronger DEISO-aligned outputs by improving its ability to maintain role discipline, organize responses more clearly, and map your intent into decision-ready pathways. In practice, you get better service discovery, more consistent pathway comparison, and more useful guidance for serious commercial or technical conversations.

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Execution path intelligence

v4.0 strengthens Mirai’s execution-first logic so that your objectives are translated into actionable DEISO pathways rather than generic answers. Instead of responding at surface level, Mirai is better positioned to interpret your challenge, identify what kind of support is actually needed, and map that need to the appropriate service, system, review route, or next step. This improves Mirai’s value as a qualification and orientation layer within the DEISO ecosystem — reducing ambiguity and shortening the path from uncertainty to a meaningful DEISO engagement.

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Anti-free-AI protection

v4.0 reinforces Mirai as a controlled enterprise guidance system rather than an unrestricted free consulting tool. Mirai operates inside DEISO’s business, technical, sustainability, and platform scope, which reduces misuse and preserves the value of DEISO’s structured expert services. Instead of allowing full consulting value to be extracted without engagement, the system channels technical intent into guided pathways, review routes, evaluations, and consultation opportunities that align with how DEISO delivers its services in practice.

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First-response conversion logic

The first interaction in Mirai has been redesigned to function as a stronger qualification layer rather than a passive conversational opener. Initial responses are better oriented toward identifying your intent, framing your problem in DEISO terms, and moving you toward the most suitable starting route with less delay and less ambiguity. This improves how Mirai handles the opening exchange — supporting better lead capture, faster project orientation, and a more purposeful journey from inquiry to structured next step.

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DEISO search and navigation layer

v4.0 improves Mirai’s function as a search and navigation layer across the DEISO ecosystem. You can use Mirai to navigate toward relevant pages, tools, services, forms, and platform routes while preserving context around why each destination matters and how it connects to your stated objective. This reduces friction across the website and product environment by turning Mirai into a more intelligent access layer rather than a simple response engine.

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Technical support and workflow guidance

Mirai AI Pro v4.0 expands support for tool-related and workflow-related questions within the DEISO environment. This includes stronger handling of compatibility questions, platform behavior, workflow fit, and system-oriented usage scenarios that matter when you are trying to determine how DEISO solutions align with your current needs or technical setup. This allows Mirai to function more credibly as a support layer for decision-making, platform understanding, and solution adoption — while keeping the interaction aligned with DEISO’s commercial and technical scope.

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Structured comparison and multi-path guidance

v4.0 improves Mirai’s ability to support decisions where more than one valid route may exist. Instead of collapsing different possibilities into a single vague answer, Mirai can now structure alternative pathways and clarify the differences between them in a way that helps you make an informed choice. This is especially valuable for sustainability work, where execution, advisory, review, training, and technical evaluation may all play different roles depending on your scope and maturity.

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Stronger global and regulatory context awareness

Mirai v4.0 is better prepared to interpret your questions through the lens of geography, industry, supply chain complexity, and compliance context. It recognizes that sustainability questions often depend on jurisdiction, reporting expectations, market-entry conditions, or international operational realities rather than on technical content alone. This improves Mirai’s usefulness in more realistic business scenarios shaped by country-specific regulations, sector-specific expectations, and multi-country value-chain conditions — rather than only simplified generic cases.

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Lead qualification and engagement support

Under v4.0, Mirai becomes a stronger qualification layer for DEISO by guiding you toward structured evaluation, consultation, quotation, and deeper commercial engagement routes. Mirai does not simply answer questions — it increasingly helps identify whether you need discovery, execution, review, technical clarification, or formal follow-up. This supports lead development, improves pathway clarity, and helps translate informational interactions into practical business opportunities without forcing you into an unnatural or overly aggressive experience.

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Release summary

DEISO Mirai AI Pro v4.0 represents a major step forward in platform capability, intelligence, and enterprise usability. The unified interface, ChatGPT 5.2 model upgrade, downloadable sessions, and deeper execution-guidance architecture collectively make Mirai a more serious, more structured, and more commercially effective tool for exploring DEISO services, identifying execution paths, and moving from uncertainty to action.