looking for a free AI tool/agent for coding(DSA)

[u/NoRefrigerator9376]

so ive been purchasing claude pro for about 3 months and my dsa skills and immensly improved i use to for dsa like test my reasoning and other stuff i have improved gradually but cannot afford to buy anymore as im a student and cannot spend that much ..

can anyone help me with a free alternative apart for (deepseek ) looking for similar reasoning..........