#料金プラン articles

Claude のサインアップ手順｜無料アカウント作成と料金プラン

Claude(claude.ai)のサインアップ方法を、無料アカウントの作り方から Google・メール登録の選び方、電話番号認証、Pro へのアップグレード手順、API 用の Console アカウントとの違いまで Anthropic 公式ヘルプに沿って解説します。

Claude

What Is Claude (Anthropic)? Features, Pricing, and How to Get Started with a Safety-First AI

Learn what kind of AI company Anthropic is, why Claude puts safety first, how it differs from ChatGPT and Gemini, the model lineup, how to choose between Free/Pro/Max plans, and how to get started — all in one place.

Claude

Claude vs Gemini Cost Comparison | Evaluating Value by API Token Pricing and Monthly Plans

A cost comparison of Claude and Gemini based on API token pricing and monthly subscription plans as of May 2026, covering real cost inflation with Japanese text, savings through free tiers and caching, and guidance on choosing the best option by use case — chat-heavy, high-volume processing, or coding.