# CoAI

> CoAI (https://ai.codigital.co.jp) is a Japan-born directory for discovering, comparing, and evaluating AI tools for work. Tools can be browsed by purpose, pricing, platform, and language support, alongside rankings, head-to-head comparisons, and how-to guides. Operated by CoDigital Inc.

The site is published in 12 languages. Every page lives under a locale prefix: `/ja/` (Japanese, the source language), `/en/`, `/zh-cn/`, `/zh-tw/`, `/ko/`, `/es/`, `/fr/`, `/it/`, `/pt/`, `/th/`, `/vi/`, `/id/`. Japanese content is authoritative; other locales are translations. Links below point to the English edition — swap the prefix for another language.

## Directory

- [AI tools](https://ai.codigital.co.jp/en/tools/): All listed AI tools with search and filters (category, pricing, platform)
- [Categories](https://ai.codigital.co.jp/en/categories/): Tools grouped by purpose
- [Rankings](https://ai.codigital.co.jp/en/rankings/): Popular AI tools ranking
- [New tools](https://ai.codigital.co.jp/en/new/): Recently added AI tools
- [Compare](https://ai.codigital.co.jp/en/compare/): Head-to-head AI tool comparisons (e.g. ChatGPT vs Claude, ChatGPT vs Gemini)
- [Guides & news](https://ai.codigital.co.jp/en/guides/): How-to articles and news about using AI tools

## Categories

- [AI agents](https://ai.codigital.co.jp/en/categories/agents/)
- [AI models & APIs](https://ai.codigital.co.jp/en/categories/ai-models/)
- [Chat & conversation](https://ai.codigital.co.jp/en/categories/chat/)
- [Writing](https://ai.codigital.co.jp/en/categories/writing/)
- [Translation](https://ai.codigital.co.jp/en/categories/translation/)
- [Research & analysis](https://ai.codigital.co.jp/en/categories/research/)
- [Coding](https://ai.codigital.co.jp/en/categories/coding/)
- [Image generation](https://ai.codigital.co.jp/en/categories/image-generation/)
- [Illustration](https://ai.codigital.co.jp/en/categories/illustration/)
- [Anime](https://ai.codigital.co.jp/en/categories/anime/)
- [Photo](https://ai.codigital.co.jp/en/categories/photo/)
- [Product image](https://ai.codigital.co.jp/en/categories/product-image/)
- [Logo](https://ai.codigital.co.jp/en/categories/logo/)
- [Design](https://ai.codigital.co.jp/en/categories/design/)
- [Presentations](https://ai.codigital.co.jp/en/categories/presentation/)
- [Video generation](https://ai.codigital.co.jp/en/categories/video-generation/)
- [Voice & audio](https://ai.codigital.co.jp/en/categories/audio/)
- [Meetings & transcription](https://ai.codigital.co.jp/en/categories/meetings/)
- [Productivity](https://ai.codigital.co.jp/en/categories/productivity/)
- [Automation](https://ai.codigital.co.jp/en/categories/automation/)
- [Marketing](https://ai.codigital.co.jp/en/categories/marketing/)
- [Sales & customer](https://ai.codigital.co.jp/en/categories/sales/)
- [Customer support](https://ai.codigital.co.jp/en/categories/customer-support/)

## Policies

- [Editorial policy](https://ai.codigital.co.jp/en/editorial-policy/): How tools are researched, listed, and reviewed
- [Terms of service](https://ai.codigital.co.jp/en/terms/)
- [Privacy policy](https://ai.codigital.co.jp/en/privacy/)
- [Contact](https://ai.codigital.co.jp/en/contact/)
- [Submit a tool](https://ai.codigital.co.jp/en/submit/): Listing request form for AI tool vendors

## Optional

- [Sitemap](https://ai.codigital.co.jp/sitemap.xml): Full URL list with hreflang alternates for all locales
- [日本語版トップ](https://ai.codigital.co.jp/ja/): Japanese edition (source language)