EarthLink Network Co., Ltd. today announced that Prompt Flow Studio, a multi-AI workspace that lets teams put many AI models to work in a single environment, is officially launching worldwide — including the United States and Japan. The Web version is available from September 4, 2026, with iOS and Android apps rolling out.
Prompt Flow Studio is more than a collection of AI models in one place. You choose the right model for the task, compare answers from several models side by side, have models debate one another, and co-write documents with multiple models. Uploaded internal documents can ground any AI you prefer, and the cost of every run is shown on the spot. It is a product built specifically to put models to work across vendors.
"One model gives one answer. Many models compare, challenge and co-write — surfacing disagreements before you decide. We bring that to enterprises, with data protection and auditability built in," said Masayoshi Uehara, CEO of EarthLink Network Co., Ltd.
Debate — adversarial verification by multiple AIs: Assign different AI models from OpenAI, Anthropic, Google and others — and personas — to different roles. An advocate and a critic exchange claims and rebuttals, a facilitator keeps issues organized, and a dedicated Red Team AI attacks weaknesses before synthesizer delivers final synthesis scored across quality metrics.
Personas define expertise, stance and tone — "a strict auditor," "a hands-on practitioner," "your brand's editor" — layerable onto comparison and debate, even pitting same model against itself with opposing personas. Co-Draft enables multiple AIs to propose outlines in parallel, review one another's work, and integrator AI produces successive versions of single document.
Enterprise data protection, rolling out beginning in October 2026: Organizations can choose whether sensitive data is blocked before transmission or automatically masked before it is sent and restored when response returns, with support for custom detection rules. The rollout also brings tamper-evident audit logging with hash-chained records, Legal Hold, retention up to seven years, selective deletion of personal data, and governance over which AI services, models and standard personas an organization permits. Conversations are private by design: administrators are not granted day-to-day access to users' prompts or AI responses.
Model-agnostic RAG grounds answers in uploaded documents with AI of your choice from OpenAI, Anthropic Claude, Google Gemini and more for comparison on shared foundation. Compare supports text and images — one prompt sent to multiple models at once with simultaneous image generation grid and per-model costs displayed. Every response shows confirmed cost in PFC credits with line-item breakdowns plus monthly usage by mode, AI service and day.
About EarthLink Network Co., Ltd.
EarthLink Network Co., Ltd. (Shirokane, Minato-ku, Tokyo; founded March 2000) provides IT solutions including systems development, infrastructure, AI consulting and education services.
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