# Code Arena vs Vellum

Code Arena records 35,827,928 monthly visits with +19.4% month-over-month growth and Free pricing. Vellum records 331,901 monthly visits with -20.8% growth and Freemium, Paid pricing.

| Metric | [Code Arena](https://openaitools.app/tool/code-arena) | [Vellum](https://openaitools.app/tool/vellum) |
| :--- | :--- | :--- |
| Website URL | https://www.arena.ai/code | https://www.vellum.ai |
| Categories | AI Code Generator, AI Code Assistant, AI Developer Tools, AI Models | AI Developer Tools, AI Workflow, Prompt Engineering |
| Pricing Model | Free | Freemium, Paid |
| Monthly Visits | 35,827,928 | 331,901 |
| MoM Growth Rate | +19.4% | -20.8% |
| Primary Market | India | United States |
| Direct Visits | 24,339,874 | 70,205 |
| Review Score | 4.7 | 4.2 |
| Saved Count | 0 | 3 |
| Supported Platforms | Website | Website |

## Code Arena

Code Arena is built for developers who want evidence rather than marketing claims when choosing a coding model. Instead of reading benchmark tables, you prompt multiple frontier models with the same request, watch them construct web apps and sites in real time, and then judge the output on accuracy, logic, and code quality. The 'battle' format mirrors the popular blind-comparison leaderboard approach, adapted specifically for software generation tasks.

The platform is designed to handle multi-file projects rather than single snippets, so the comparisons reflect the messy reality of real development work: routing, component structure, styling, and state management all have to hold together. Results are surfaced through a leaderboard so you can see which models are consistently favoured by the community over time.

Because the tool is free to use and browser-based, it works well as a quick sanity check before committing a paid subscription or API budget to a particular model, and as a way to keep a finger on the pulse of how fast the coding-model landscape is moving.

**Pricing & Plans:** 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.

**Strengths:** 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

**Limitations:** 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/tool/code-arena.md)

## Vellum

Vellum is a personal AI assistant rather than a chat box. The core idea is ownership: your assistant runs locally on your own machine by default, or in a dedicated cloud container if you prefer Vellum Cloud, and it is yours to shape. You configure how it talks, what it can touch and which models it uses, choosing between OpenAI, Anthropic, Gemini or open-weight models via Ollama. The codebase is open-source, so the privacy claims can be inspected rather than merely trusted.

What separates it from a general-purpose chatbot is memory and autonomy. Vellum's custom memory system tracks you, your people, your preferences and your ongoing work across conversations, so context does not evaporate when a session ends. With built-in skills for Google Workspace, Slack, Notion and your filesystem, plus community and custom plugins, the assistant can send emails, manage calendars, browse the web, generate slides, write code, run deep research, monitor sites and repeat background tasks on a schedule. Because it acts rather than only answers, Vellum ships a fine-grained permission system: actions with real consequences require approval until you mark them trusted.

Availability is broad by design. It is native on Mac and reachable through iOS, Android, a web app, voice, email, Telegram, Slack and the terminal, with the same memory, tasks and schedules on every surface. Vellum is free to download and run locally; cloud subscriptions start at $30/month (Mighty), $100/month (Super) and $200/month (Ultra) with dedicated compute, storage and bundled credits. Note that the company has announced the Personal Assistant Platform is shutting down by December 13, 2026, so verify current availability and export options before committing.

**Pricing & Plans:** Free to download and run locally. Vellum Cloud subscriptions start at $30/month (Mighty), $100/month (Super) and $200/month (Ultra), each with dedicated compute, storage and bundled credits. Credits are consumed by actions. The site also notes the Personal Assistant Platform is shutting down by December 13, 2026, with instructions to download your assistant.

- **Long-term personal memory:** A custom-built memory system that retains you, your people, preferences and work across every conversation, rather than resetting each session.
- **Skills and tool integrations:** Connect Google Workspace, Slack, Notion, your filesystem and community plugins so the assistant can send emails, manage calendars, browse, create slides and run research.
- **Fine-grained permissions:** Set permissions so sensitive actions like emailing new contacts or modifying key files require approval until you mark them trusted.
- **Model choice:** Switch between OpenAI, Anthropic, Gemini or open-weight models via Ollama at any time, keeping you free of a single vendor lock-in.
- **Local-first privacy:** Your assistant runs locally by default with open-source code you can inspect; Vellum Cloud offers an isolated container provisioned just for you.
- **Available everywhere:** Native on Mac and available on iOS, Android, web, voice, email, Telegram, Slack and terminal, all sharing the same identity, memory and schedules.

**Strengths:** Runs locally by default with open-source code you can audit; Genuine long-term memory that persists across every conversation; Model-agnostic: OpenAI, Anthropic, Gemini or local open weights via Ollama; Takes real actions across email, calendar, files and connected tools

**Limitations:** The homepage banner states the Personal Assistant Platform is shutting down by December 13, 2026; Proprietary cloud tiers at $30–$200 per month, and credit-based actions can add cost; High-stakes actions require approval prompts until you mark them trusted, adding friction early on; Mac-first native experience, so non-Apple users depend on web and chat surfaces

[Profile (Markdown)](https://openaitools.app/tool/vellum.md)

## Frequently Asked Questions

### How do Code Arena and Vellum compare in monthly traffic?

Code Arena has 35,827,928 monthly visits, while Vellum has 331,901. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Code Arena has a month-over-month growth rate of +19.4%; Vellum has -20.8%.

### How does pricing compare?

Code Arena: Free. Free to use; no paid tier is advertised on the product page. Related enterprise/API offerings from Arena may be priced separately. Vellum: Freemium, Paid. Free to download and run locally. Vellum Cloud subscriptions start at $30/month (Mighty), $100/month (Super) and $200/month (Ultra), each with dedicated compute, storage and bundled credits. Credits are consumed by actions. The site also notes the Personal Assistant Platform is shutting down by December 13, 2026, with instructions to download your assistant.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Ollama](https://openaitools.app/tool/ollama) | 9,421,973 | +4.3% | Free, Freemium, Paid | Serves as a lightweight backend runtime for running local models, but requires a separate UI or client app. | [.md](https://openaitools.app/tool/ollama.md) |
| 2 | [n8n](https://openaitools.app/tool/n8n) | 4,522,449 | -7.4% | Freemium | Excels at node-based workflow automation and agent orchestration, but is less focused on conversational assistant interactions. | [.md](https://openaitools.app/tool/n8n.md) |
| 3 | [Hermes-Agent](https://openaitools.app/tool/hermes-agent-1) | 3,638,741 | -5.4% | Freemium | Offers autonomous personal agent capabilities with persistent memory, but requires more technical setup than Vellum. | [.md](https://openaitools.app/tool/hermes-agent-1.md) |
| 4 | [Clawdbot (OpenClaw)](https://openaitools.app/tool/clawdbot) | 1,903,068 | -25.4% | Paid, Free | Connects local models directly to messaging apps for task automation, but lacks Vellum's polished desktop assistant interface. | [.md](https://openaitools.app/tool/clawdbot.md) |
| 5 | [Design Arena](https://openaitools.app/tool/design-arena) | 949,534 | -13.2% | Free | Crowdsourced arena where AI models compete and humans crown the best design output | [.md](https://openaitools.app/tool/design-arena.md) |
| 6 | [Dify](https://openaitools.app/tool/dify-ai) | 819,691 | -15% | Freemium | Provides visual workflow building and RAG pipelines, but is structured more as a developer platform than a personal assistant. | [.md](https://openaitools.app/tool/dify-ai.md) |
| 7 | [Open WebUI](https://openaitools.app/tool/open-webui) | 804,534 | -2.8% | Freemium | Provides a feature-rich self-hosted chat interface for local models, but lacks native background workflow automation. | [.md](https://openaitools.app/tool/open-webui.md) |
| 8 | [Skillry](https://openaitools.app/tool/skillry) | 535,817 | +1,762.1% | Freemium | Agent Skills that give your coding agent real design taste | [.md](https://openaitools.app/tool/skillry.md) |
| 9 | [AnythingLLM](https://openaitools.app/tool/anythingllm) | 512,269 | +12.9% | Freemium | Focuses heavily on local document RAG and privacy-first chat, whereas Vellum emphasizes broader assistant workflows. | [.md](https://openaitools.app/tool/anythingllm.md) |
| 10 | [SkillsMP — Agent Skills Marketplace](https://openaitools.app/tool/agent-skills-marketplace) | 470,744 | -3.7% | Free | Search and study millions of public SKILL.md agent skills | [.md](https://openaitools.app/tool/agent-skills-marketplace.md) |

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Source: https://openaitools.app/compare/code-arena-vs-vellum

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