
SpecialistThe AI coding agent for building ambitious software
Pi Coding Agent records 1,929,244 monthly visits with +4% month-over-month growth and Free pricing. Refraction records 2,383 monthly visits with +6.5% growth and Freemium, Free Trial, Paid, Contact for Pricing, Free pricing.

AI code assistant for refactoring, tests, docs and conversion
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | pi.dev | refraction.dev |
| Pricing Model | Free | Freemium, Free Trial, Paid, Contact for Pricing, Free |
| Monthly Visits | 1.93M (1,929,244) | 2.38K (2,383) |
| MoM Traffic Delta |
| +74.89K (+4%) |
| +146 (+6.5%) |
| Primary Market & Share | 🇨🇳 China (33.4%) | 🇮🇳 India (70%) |
|---|
| Direct Visits / mo | 902.21K | 928 |
|---|
| User Rating | 4.6 | 4.4 |
|---|
| Supported Platforms | Website | Website |
|---|
A minimal, extensible terminal coding agent you can reshape
Build commands, tools, keyboard shortcuts, overlays, sub-agents or permission gates as TypeScript extensions, or install them as packages from npm and git.
AGENTS.md instructions, per-project SYSTEM.md, on-demand skills, prompt templates and customizable compaction keep the context window under your control.
Connect 15+ providers from Anthropic and OpenAI to Bedrock, Groq, OpenRouter and local Ollama, then switch models mid-session.
Interactive TUI, print/JSON for scripting, an RPC protocol for non-Node hosts, and an SDK for embedding the agent.

AI code assistant for refactoring, tests, docs and conversion
Pick from over 20 actions including bug detection, refactoring, style checking, type annotation, debug statements, literal extraction and code explanation.
Turn any pasted source code into a test suite for your chosen framework, or generate documentation inline so the code explains itself.
Translate code between 56 languages and convert stylesheet rules from one CSS framework to another, including Tailwind-style conversions.
Describe what you need in plain English and get Mermaid diagrams, SQL queries, regex patterns, CSP headers or CI/CD pipeline definitions.

SpecialistThe AI coding agent for building ambitious software

Describe your idea and Replit builds a working app in minutes
#2
Free / Open-sourceWrite code with precision, hand bigger jobs to agents, and keep working from anywhere

SpecialistAn agentic coding platform that ships real software
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SpecialistThe coding agent that learns your coding taste

AI code review, PR triage, and security monitoring for fast-moving teams
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Baidu's ERNIE-powered AI coding partner for your IDE
Agentic coding with parallel AI agents that build and ship real products

Free / Open-sourceA command-line AI pair programmer that directly edits files in your local git repository, similar to terminal workflows.

SpecialistAI coding agent for VS Code, JetBrains and Visual Studio with bring-your-own-key model freedom
SpecialistThe AI coding agent for building ambitious software
Free / Open-sourceWrite code with precision, hand bigger jobs to agents, and keep working from anywhere
SpecialistAn autonomous software engineer that handles end-to-end repository tasks, but operates as a cloud service rather than locally.
SpecialistThe coding agent that learns your coding taste
AI code review, PR triage, and security monitoring for fast-moving teams
An AI-powered integrated development environment providing comprehensive project understanding, but operating as a desktop app.
Agentic coding with parallel AI agents that build and ship real products
Free / Open-sourceA command-line AI pair programmer that directly edits files in your local git repository, similar to terminal workflows.