# Autofilly vs Pi Coding Agent

Autofilly records 0 monthly visits with — month-over-month growth and Free pricing. Pi Coding Agent records 1,929,244 monthly visits with +4% growth and Free pricing.

| Metric | [Autofilly](https://openaitools.app/tool/autofilly) | [Pi Coding Agent](https://openaitools.app/tool/pi-coding-agent) |
| :--- | :--- | :--- |
| Website URL | https://chromewebstore.google.com/detail/autofilly/kipeljdmmfapdfmklhibgedbgppgaeom | https://pi.dev |
| Categories | AI Forms, AI API, AI Text Generator | AI Agent, AI Code Assistant, AI Developer Tools, AI Code Generator |
| Pricing Model | Free | Free |
| Monthly Visits | 0 | 1,929,244 |
| MoM Growth Rate | — | +4% |
| Primary Market | Global | China |
| Direct Visits | 0 | 902,212 |
| Review Score | 4.2 | 4.6 |
| Saved Count | 0 | 0 |
| Supported Platforms | Browser Extension | Website |

## Autofilly

Autofilly solves a mundane but constant problem in web development: populating forms with placeholder data just to see how a layout behaves or to push a test case through. Rather than inventing fake names and addresses by hand, you click the extension button and it writes data into the form inputs on the current page. Out of the box it uses JavaScript-generated random values, which is instant, offline, and good enough for checking that fields render and submit.

If you need values that actually look plausible — realistic names, sentences, or structured text — you can supply your own OpenAI API key. The extension then calls OpenAI through your key to produce human-readable content for the fields. Because the key is yours, usage flows directly to your own account and quota is under your control.

Autofilly is published on the Chrome Web Store by the team behind autofilly.dev. It is listed at version 1.0.1, updated in June 2024, with a 5-star average from a small handful of ratings. It is a free developer utility rather than a commercial product, and the developer states that the extension does not collect or use your data. Treat it as a convenience tool for local development rather than something you would point at production systems.

**Pricing & Plans:** Free. There is no paid tier; if you enable the OpenAI mode you pay OpenAI directly for API usage through your own key.

- **One-click filling:** Click the extension on any page and it populates the detected form inputs, with no per-field setup required.
- **Random data mode:** Generates random values in JavaScript for instant, offline filler content — ideal for quick layout and submission checks.
- **Bring-your-own OpenAI key:** Add your own API key to have OpenAI write realistic, human-readable values instead of random strings.
- **Developer-oriented workflow:** Aimed at local development and testing, where you need throwaway data in forms rather than a stored personal profile.
- **No data collection declared:** The developer states that the extension does not collect or use your data and does not sell it to third parties.

**Strengths:** Genuinely free with no subscription or paywall; Two modes in one tool — instant random data or AI-written values; The OpenAI mode uses your own key, so billing and quota stay under your control; Developer declares no data collection, keeping local development self-contained

**Limitations:** Small install base of around 16 users, so there is limited community feedback; The human-readable mode requires your own paid OpenAI API key; Version 1.0.1 has not been updated since mid-2024

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

## Pi Coding Agent

Pi is a terminal-based coding agent built around one idea: the harness should adapt to your workflow, not the other way around. It keeps a deliberately small system prompt and core, which makes it token-efficient and lets you control exactly what lands in the context window. Instructions come from AGENTS.md files, a per-project SYSTEM.md, on-demand skills, reusable prompt templates and extensions that can inject context before each turn.

Instead of shipping every feature, Pi exposes primitives. Sub-agents, plan mode, permission gates, path protection, sandboxing, SSH execution, custom editors and status bars can all be built with extensions, asked for in natural language, or installed from third-party packages on npm and git. MCP is built in, and Codemode lets agents compose tool calls inside a JavaScript sandbox. Session history is stored as a tree, so you can rewind to any earlier message, branch from there, and export or share the whole thing.

Pi runs in four modes: the full interactive TUI, print/JSON mode for scripts and pipelines, an RPC protocol over stdin/stdout for non-Node integrations, and an SDK for embedding it in your own apps. It connects to 15+ providers including Anthropic, OpenAI, Google, Azure, Bedrock, Mistral, Groq, Cerebras, xAI, Hugging Face, OpenRouter and local Ollama, and you can switch models mid-session with a keystroke. Models, packages, changelog and docs all live on the project site.

**Pricing & Plans:** Free and open source (MIT). You only pay your chosen model or API provider; no subscription is required for the agent itself.

- **Extensible harness:** Build commands, tools, keyboard shortcuts, overlays, sub-agents or permission gates as TypeScript extensions, or install them as packages from npm and git.
- **Context engineering:** AGENTS.md instructions, per-project SYSTEM.md, on-demand skills, prompt templates and customizable compaction keep the context window under your control.
- **Multi-provider models:** Connect 15+ providers from Anthropic and OpenAI to Bedrock, Groq, OpenRouter and local Ollama, then switch models mid-session.
- **Four run modes:** Interactive TUI, print/JSON for scripting, an RPC protocol for non-Node hosts, and an SDK for embedding the agent.
- **Tree-structured history:** Rewind to any previous message, branch from it, and export to HTML or share the session via a gist URL.

**Strengths:** Open source under MIT with a minimal, readable core; Highly extensible: add or install the features other agents hard-code; Token-efficient thanks to a small system prompt; Broad model support with mid-session switching and local Ollama options

**Limitations:** Deliberately ships without sub-agents, plan mode or permission popups by default; You may need to build or install extensions to get a full-featured experience; Terminal-centric UI has a learning curve if you expect a GUI

[Profile (Markdown)](https://openaitools.app/tool/pi-coding-agent.md)

## Frequently Asked Questions

### How do Autofilly and Pi Coding Agent compare in monthly traffic?

Autofilly has 0 monthly visits, while Pi Coding Agent has 1,929,244. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Autofilly has a month-over-month growth rate of —; Pi Coding Agent has +4%.

### How does pricing compare?

Autofilly: Free. Free. There is no paid tier; if you enable the OpenAI mode you pay OpenAI directly for API usage through your own key. Pi Coding Agent: Free. Free and open source (MIT). You only pay your chosen model or API provider; no subscription is required for the agent itself.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Cursor](https://openaitools.app/tool/cursor) | 23,297,751 | +8.4% | Freemium | A dedicated AI-native code editor offering superior multi-file code generation, though it lacks terminal-native lightness. | [.md](https://openaitools.app/tool/cursor.md) |
| 2 | [Replit](https://openaitools.app/tool/replit) | 10,016,437 | -7.7% | Freemium, Paid | Describe your idea and Replit builds a working app in minutes | [.md](https://openaitools.app/tool/replit.md) |
| 3 | [VS Code](https://openaitools.app/tool/vs-code) | 7,397,370 | -3.8% | Freemium | The industry-standard source code editor with flexible plugin support, requiring extensions for advanced agentic coding. | [.md](https://openaitools.app/tool/vs-code.md) |
| 4 | [Qoder](https://openaitools.app/tool/qoder) | 5,145,040 | +81.8% | Freemium, Free Trial, Free | An IDE plugin that reads entire codebases for multi-file tasks, trading terminal minimalism for integrated UI. | [.md](https://openaitools.app/tool/qoder.md) |
| 5 | [Fillout](https://openaitools.app/tool/fillout-com) | 3,923,917 | -9.7% | Freemium | Build powerful forms, surveys and quizzes with AI in minutes | [.md](https://openaitools.app/tool/fillout-com.md) |
| 6 | [Devin](https://openaitools.app/tool/devin) | 2,549,346 | +1% | Paid | An autonomous software engineer that handles end-to-end repository tasks, but operates as a cloud service rather than locally. | [.md](https://openaitools.app/tool/devin.md) |
| 7 | [Command Code](https://openaitools.app/tool/command-code) | 2,358,177 | -12.1% | Freemium, Contact for Pricing | A terminal-first AI coding agent optimized for open-weight models, offering a similar command-line developer experience. | [.md](https://openaitools.app/tool/command-code.md) |
| 8 | [Trae](https://openaitools.app/tool/trae) | 702,366 | -7.8% | Freemium | An AI-powered integrated development environment providing comprehensive project understanding, but operating as a desktop app. | [.md](https://openaitools.app/tool/trae.md) |
| 9 | [Aider](https://openaitools.app/tool/aider) | 280,030 | +2% | Free | A command-line AI pair programmer that directly edits files in your local git repository, similar to terminal workflows. | [.md](https://openaitools.app/tool/aider.md) |
| 10 | [FormHug](https://openaitools.app/tool/formhug) | 92,118 | -4.8% | Freemium, Free | Free AI form builder for humans and AI agents | [.md](https://openaitools.app/tool/formhug.md) |

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Source: https://openaitools.app/compare/autofilly-vs-pi-coding-agent

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