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Free AI for Coding

Commercial use OK400+ modelsNo watermarkNo sign-up needed
Model:
+ GPT-5, Claude, Gemini
Model
Advanced options
~100 tokens per use · Qwen3 Coder 30B · Generate Code · Python

Generate, debug, and explain code with free AI. Python, JavaScript, HTML, and more — no sign up.

What You Can Do

Generate Code

Describe what you need in plain English and get working code in Python, JavaScript, TypeScript, Java, C++, Go, Rust, Ruby, PHP, SQL, HTML, CSS or Shell.

Debug & Fix

Paste code that misbehaves and get it back fixed, with a note under the result saying what went wrong and why the fix works - not just the diff.

Explain Code

Paste any code and get a clear, line-by-line explanation. Good for learning a new language, or for reading your way into an unfamiliar codebase.

Convert Languages

Translate code between the 20 languages and formats in the list. Python to JavaScript, Ruby to Go, or any other pair - idiomatic output.

Code Review

Get findings on bugs, security issues, performance, readability and best practices, each with a severity. Like a senior developer reading it.

Code in Chat

You can also write code conversationally in Chat, or open any of the 400+ models on a page of its own and keep working with it there.

How to Use AI Code Generator

1

Pick a language and a mode

Choose from 20 languages, then what to do with the code: generate it from a description, debug it, explain it, convert it to another language, or review it.

2

Describe it or paste your code

For Generate, say what you need in plain English — the inputs, the output, the edge cases. Every other mode takes the code itself. Swap the model if you want a different one.

3

Generate, then copy or download

Press Ctrl+Enter or hit the button. Copy the code in one click or download it as a file. Debug adds a note on what went wrong. No sign up, 2,500 free tokens a day.

Use this tool via API

Call this tool straight from your own scripts. The endpoint follows the OpenAI REST format and signs requests with a bearer token, so client libraries you already use keep working. You are billed the same token rate as the web app.

API DocumentationGet API Key
curl
curl -X POST https://api.rewind.ai/v1/chat/completions/ \
  -H "Authorization: Bearer sk-rewind-..." \
  -H "Content-Type: application/json" \
  -d '{"model": "qwen/qwen3-coder-30b-a3b-instruct", "messages": [{"role": "user", "content": "Write Python code for: reverse a string. Output ONLY the code."}]}'

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Why Choose Rewind.ai?

Free daily token pool, no card needed
No sign-up to start
Runs on open-source AI models
Your input isn't stored or sold
Works on desktop and mobile
Register to get even more tokens
Try It Free Now

FAQ

A free AI code generator that runs in your browser. Describe what you need and it writes the code, or paste code you already have and it will debug, explain, convert or review it. No sign up and no install.

Anyone who writes code: picking up a new language, fixing a bug in a snippet someone handed you, translating a script into another language, or getting a second opinion before you commit.

Yes — no card and no trial period. Anonymous visitors get 2,500 free tokens a day, a free account gets 5,000 plus 10,000 once on signup, and the daily pool resets every 24 hours.

No. You can generate, debug and explain code without an account. Signing up is free and doubles the daily pool from 2,500 to 5,000 tokens, with 10,000 more added once.

20 languages and formats: Python, JavaScript, TypeScript, Java, C++, C#, Go, Rust, Ruby, PHP, Swift, Kotlin, HTML, CSS, SQL, Shell / Bash, R, MATLAB, JSON, YAML.

Four more jobs, from the Mode select. Debug / Fix returns the corrected code with a note on what went wrong. Explain Code walks through it line by line. Convert Language translates between any two on the list. Code Review lists findings, each with a severity.

The result appears in a panel you can copy in one click or download as a file — .py, .js, .go and so on, or .md for an explanation or a review. Nothing is saved to an account, so copy or download what you want to keep.

Be specific: name the inputs, the output you expect and the edge cases that matter. Use Advanced options to pin a runtime such as Python 3.12 or Node 20, or to add a constraint like no external dependencies. When debugging, paste the error message along with the code.

It runs on Qwen3 Coder 30B by default — an open-source coding model the free daily pool covers. The picker also offers Qwen 2.5 7B, Qwen 3 8B and Ministral 8B on that same free pool, and paid models such as GPT-5, Claude Sonnet 4.6 and Gemini 2.5 Pro for accounts with purchased tokens.

Yes. This page calls an OpenAI-compatible endpoint you can call yourself: read the API docs and create a key in your account. You are billed the same token rate as the web app.

Yes. What you generate is yours to use for personal or commercial work, and the models behind it are commercially licensed.

Your input is sent to the model to answer that one request. We don't sell it and we don't use it to train models.

Yes. It runs in any mobile browser, with no app to install.

Sign up free: 5,000 tokens/day

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