</>CODEWARS

Research model / 001

Make hard problems feel smaller.

A focused workspace for training CodeWars to solve programming problems, explain the path, and leave behind code you can actually inspect.

Pricing

Start free. Upgrade when you need more.

Starter

Free

$0/month
  • 3 prompt runs per day
  • Basic reasoning traces
  • Community support
Scale

Team

$49.99/month
  • Shared workspace access
  • Premium model routing
  • Priority onboarding
1

Claude pricing

Estimate token cost for requests across model tiers before you send a production prompt.

2

PayPal checkout

Use a seamless subscription flow for Pro or Team access with a demo order payload.

3

Active access

Unlock premium workspace features and keep the model, pricing, and billing flow connected.

Active domain
Algorithms / problem solving

Problem solver

CodeWars / local demo Give me a problem. I will break it into an idea, a proof sketch, and an implementation.
You Find the first non-repeating character in a string.
CodeWars / draft Count each character once, then scan the string again. The second pass preserves order and finds the first count of one.
def first_unique(text):
    counts = {}
    for char in text:
        counts[char] = counts.get(char, 0) + 1
    return next((char for char in text if counts[char] == 1), None)
Enter a prompt to run the local preview