# Code Arena vs Startups.RIP

Code Arena は月間 35,827,928 訪問、前月比成長率 +19.4%、料金体系無料を記録しています。Startups.RIP は月間 50,724 訪問、成長率 -17%、料金体系フリーミアムを記録しています。

| 指標 | [Code Arena](https://openaitools.app/ja/tool/code-arena) | [Startups.RIP](https://openaitools.app/ja/tool/startups-rip) |
| :--- | :--- | :--- |
| ウェブサイト URL | https://www.arena.ai/code | https://startups.rip |
| カテゴリ | AIコード生成, AIコードアシスタント, AI開発者ツール, AIモデル | AI ツールディレクトリ, AIリサーチツール, AI開発者ツール |
| 料金モデル | 無料 | フリーミアム |
| 月間訪問数 | 35,827,928 | 50,724 |
| 前月比成長率 | +19.4% | -17% |
| 主要市場 | インド | インド |
| ダイレクト訪問 | 24,339,874 | 23,003 |
| レビュースコア | 4.7 | 4.1 |
| 保存数 | 0 | 2 |
| 対応プラットフォーム | ウェブサイト | ウェブサイト |

## Code Arena

Code Arena is a hands-on playground and leaderboard where you can pit leading AI coding models against each other on real web builds, comparing speed, accuracy, and logic in live side-by-side battles.

**料金とプラン:** Free to use; no paid tier is advertised on the product page. Related enterprise/API offerings from Arena may be priced separately.

- **Model battles:** Send the same coding prompt to multiple leading models and compare their generated apps and logic side by side.
- **Real-time app building:** Watch models construct web apps and websites live, so you can see process and output, not just the final file.
- **Multi-file generation:** Projects go beyond one-off snippets, testing how well a model structures components, routes, and styles together.
- **Community leaderboard:** Track which coding models accumulate the most wins over time to identify consistently strong performers.
- **Free browser access:** Run comparisons directly in the browser without installing anything or paying for credits.

**強み:** Free, no-signup barrier for quick comparisons; Tests full multi-file projects, not just isolated snippets; Live battles reveal model behaviour, speed, and failure modes; Leaderboard aggregates community signal over time

**制約・デメリット:** Battles are subjective and depend on the prompts you write; Not a full IDE replacement for day-to-day development; Leaderboard results can shift quickly as new models ship

[Profile (Markdown)](https://openaitools.app/ja/tool/code-arena.md)

## Startups.RIP

Startups.RIP is a research library of 2,200+ startup stories — including many Y Combinator companies — that documents what each one built, how it ended, and how you could rebuild it today. Free accounts browse research reports and build plans; Pro adds implementation-ready technical specs and a CLI that imports the research into coding agents like Claude and Codex.

**料金とプラン:** Freemium. The Free tier includes all completed research reports, build plans and prototypes, and research chat for signed-in members. Pro costs $15/month (or $180 billed annually, a 25% saving) and adds implementation-ready technical specs, on-demand research and the Agent CLI. Renewal can be cancelled anytime.

- **2,000+ startup case files:** A searchable library of over 2,234 startup reports with status labels such as Acquired, Inactive and Active, organised by YC batch and industry.
- **Build plans and prototypes:** Each featured company comes with practical build plans and prototypes that turn the historical lesson into a concrete project you can start.
- **Implementation-ready tech specs:** Pro members unlock implementation-ready specifications that describe how to actually build the product, not just what the original team did.
- **Research chat:** Ask questions about any report or build plan and get answers drawn from the archive, rather than reading every page manually.
- **Agent CLI for coding agents:** The Pro CLI pulls reports, rebuild plans and specs straight into Claude, Codex and other coding agents so you can ship from the research.

**強み:** Turns startup post-mortems into concrete build plans and specs; Searchable archive of 2,234+ companies with clear outcome labels; Agent CLI feeds research straight into Claude, Codex and similar tools; Free tier covers reports, build plans and research chat

**制約・デメリット:** Technical specs and the coding-agent CLI require a paid Pro plan; Coverage skews to YC companies, so non-YC failure history is thinner; Report depth varies by how much public information exists for each startup

[Profile (Markdown)](https://openaitools.app/ja/tool/startups-rip.md)

## よくある質問

### Code Arena と Startups.RIP の月間トラフィックはどのように比較されますか？

Code Arena の月間訪問数は 35,827,928、Startups.RIP は 50,724 です。トラフィックの推定値はオーディエンスの規模を示すものであり、製品の品質を示すものではありません。

### 成長率はどのように比較されますか？

Code Arena の前月比成長率は +19.4%、Startups.RIP は -17% です。

### 料金はどのように比較されますか？

Code Arena: 無料。Free to use; no paid tier is advertised on the product page. Related enterprise/API offerings from Arena may be priced separately. Startups.RIP: フリーミアム。Freemium. The Free tier includes all completed research reports, build plans and prototypes, and research chat for signed-in members. Pro costs $15/month (or $180 billed annually, a 25% saving) and adds implementation-ready technical specs, on-demand research and the Agent CLI. Renewal can be cancelled anytime.

## 代替ツール

| # | ツール名 | 月間訪問数 | 前月比成長率 | 料金モデル | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Design Arena](https://openaitools.app/ja/tool/design-arena) | 949,534 | -13.2% | 無料 | AI モデルが競い合い、人間の投票が最良のデザイン出力を決めるクラウドソース・アリーナ | [.md](https://openaitools.app/ja/tool/design-arena.md) |
| 2 | [Dang.ai](https://openaitools.app/ja/tool/dang-ai) | 552,907 | +17.5% | 無料 | 5,000以上のツールを収録した厳選AIツールディレクトリ | [.md](https://openaitools.app/ja/tool/dang-ai.md) |
| 3 | [Skillry](https://openaitools.app/ja/tool/skillry) | 535,817 | +1,762.1% | フリーミアム | コーディングエージェントに本当のデザインセンスを与える Agent Skills | [.md](https://openaitools.app/ja/tool/skillry.md) |
| 4 | [Futurepedia](https://openaitools.app/ja/tool/futurepedia-find-the-best-ai-tools-software) | 527,719 | +22.5% | 無料 | 最適なAIツールを見つけ、比較し、使い方を学ぶ | [.md](https://openaitools.app/ja/tool/futurepedia-find-the-best-ai-tools-software.md) |
| 5 | [SkillsMP — エージェントスキルマーケットプレイス](https://openaitools.app/ja/tool/agent-skills-marketplace) | 470,744 | -3.7% | 無料 | 数百万の公開 SKILL.md エージェントスキルを検索・研究 | [.md](https://openaitools.app/ja/tool/agent-skills-marketplace.md) |
| 6 | [LabLab.ai](https://openaitools.app/ja/tool/lablab-ai) | 431,529 | -39.7% | 無料 | AIビルダーのための無料ハッカソンとグローバルコミュニティ | [.md](https://openaitools.app/ja/tool/lablab-ai.md) |
| 7 | [AI Directories](https://openaitools.app/ja/tool/ai-directories) | 133,011 | -6.9% | 有料 | 100以上のAIディレクトリへ手作業で掲載し、被リンクと露出を獲得 | [.md](https://openaitools.app/ja/tool/ai-directories.md) |
| 8 | [Cursor Directory](https://openaitools.app/ja/tool/cursor-directory) | 125,466 | +5.3% | 無料 | Cursor 向けコミュニティ製プラグイン・ルール・MCP サーバーのハブ | [.md](https://openaitools.app/ja/tool/cursor-directory.md) |
| 9 | [Easy With AI](https://openaitools.app/ja/tool/easywithai-com) | 119,734 | -2.7% | フリーミアム、無料トライアル、無料 | 厳選された AI ツールとリソースを探せるディレクトリ | [.md](https://openaitools.app/ja/tool/easywithai-com.md) |
| 10 | [Coarena by Coasty](https://openaitools.app/ja/tool/coarena-by-coasty) | 59,004 | -33.5% | 無料 | コンピュータ操作AIエージェントをブラインド対戦でベンチマーク | [.md](https://openaitools.app/ja/tool/coarena-by-coasty.md) |

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出典: https://openaitools.app/ja/compare/code-arena-vs-startups-rip

More Markdown: [カテゴリ](https://openaitools.app/ja/categories.md) · [トラフィックランキング](https://openaitools.app/ja/rankings.md) · [llms.txt](https://openaitools.app/ja/llms.txt)