Codex vs Claude Code
開発者が実際に議論する、ターミナルベースのAIコーディングエージェント2つ。価格と適合性の違いを紹介します。
私たちの結論
Both are capable terminal coding agents, and the deciding factor is usually which subscription you already pay for. If your team is on ChatGPT, start with Codex; if you are on Claude, start with Claude Code. Compare the usage limits in the table before buying a higher tier.
| Codex | Claude Code | |
|---|---|---|
| 開始価格 | 無料プラン | $20/mo |
| 無料プラン | ||
| 使いやすさ | 62/100 | 60/100 |
| 技術チーム向け | ||
| 最適な用途 | Improve coding / development | Improve coding / development |
| 価格の確認 |
Codex
OpenAIのエージェント型コーディングツール。ターミナルやエディターからソフトウェアの作成・修正ができます。
Claude Code
An agentic command-line coding tool for building and refactoring software with AI.
Frequently asked questions
Which is better for a solo developer, Codex or Claude Code?
Both are terminal-based coding agents with similar core capability. Codex runs on OpenAI's models and integrates tightly with the ChatGPT ecosystem; Claude Code runs on Anthropic's models and is generally rated strong on long, multi-step coding tasks. Pricing and usage limits differ — check the table above.
Do I need a separate subscription for these on top of ChatGPT or Claude?
Usually yes — Codex and Claude Code are typically billed separately from the consumer chat apps, though usage may be bundled into certain higher-tier plans. Confirm current bundling on the vendor's pricing page before buying.
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