[2026 Survey] Generative AI Regular Usage in Shikoku Quadruples to 39% in One Year
A 2026 survey of 228 workers across Shikoku by Oceans Co., Ltd. reveals that regular Generative AI usage doubled from 21.2% to 39.0%. ChatGPT remains the most used tool, while Gemini tripled in usage. However, the survey also highlights a surge in security concerns and a lag in corporate policy development.
📋 Article Processing Timeline
- 📰 Published: May 22, 2026 at 18:00
- 🔍 Collected: May 22, 2026 at 09:31
- 🤖 AI Analyzed: May 22, 2026 at 09:36 (4 min after Collected)
## 2026 Survey: Generative AI Adoption in Shikoku
Oceans Co., Ltd. (Matsuyama, Ehime; CEO: Shoichi Isozaki) has announced the results of its "Generative AI Business Usage Survey (2026 Edition)" conducted among 228 workers across four prefectures in Shikoku.
### Key Findings
1. **Doubling of Regular Users**: The proportion of regular users has grown from 21.2% to 39.0%. Non-users have decreased to 48.2%, signaling a transition from the early adoption phase to early majority.
2. **Tool Usage**: ChatGPT remains the top tool (32.9%). Notably, usage of Google Gemini has tripled from 6.5% to 15.4%.
3. **Surge in Security Concerns**: While "lack of knowledge" remains the top barrier (49.6%), concerns regarding security have surged from 16.8% to 27.6%, reflecting a shift from theoretical to practical risk.
4. **Governance Lag**: Only 10.5% of companies have fully established company-wide guidelines for Generative AI usage.
For the full report, please visit the company's official website:
[https://oceans-web.co.jp/column/shikoku-generation-ai-2026/](https://oceans-web.co.jp/column/shikoku-generation-ai-2026/)
Oceans Co., Ltd. (Matsuyama, Ehime; CEO: Shoichi Isozaki) has announced the results of its "Generative AI Business Usage Survey (2026 Edition)" conducted among 228 workers across four prefectures in Shikoku.
### Key Findings
1. **Doubling of Regular Users**: The proportion of regular users has grown from 21.2% to 39.0%. Non-users have decreased to 48.2%, signaling a transition from the early adoption phase to early majority.
2. **Tool Usage**: ChatGPT remains the top tool (32.9%). Notably, usage of Google Gemini has tripled from 6.5% to 15.4%.
3. **Surge in Security Concerns**: While "lack of knowledge" remains the top barrier (49.6%), concerns regarding security have surged from 16.8% to 27.6%, reflecting a shift from theoretical to practical risk.
4. **Governance Lag**: Only 10.5% of companies have fully established company-wide guidelines for Generative AI usage.
For the full report, please visit the company's official website:
[https://oceans-web.co.jp/column/shikoku-generation-ai-2026/](https://oceans-web.co.jp/column/shikoku-generation-ai-2026/)
FAQ
四国4県における2026年の生成AI定期利用率はどのくらいですか？
2026年5月時点の調査によると、生成AIを定期的に業務で活用している人は39.0%に達し、前年の21.2%から倍増しました。
生成AIの利用ツールにおいて、どのサービスが成長していますか？
ChatGPTが32.9%で引き続き首位ですが、Google Geminiの利用率が前年の6.5%から15.4%へと約3倍に急伸しています。
生成AI導入における主な課題の変化は何ですか？
最多課題は前年同様「知見不足」ですが、セキュリティへの懸念が16.8%から27.6%へと急増しており、リスク認識が変化しています。
四国地方における企業内の生成AIルール整備状況はどうですか？
全社的に利用ルールが整備されている企業はわずか10.5%にとどまっており、利用拡大に対してガバナンス整備が追いついていない状況です。
この調査の対象と期間は？
四国4県在住の20〜64歳の就業者228名を対象に、2026年5月18日から19日にかけてインターネット調査が実施されました。