AI math solver with steps
Maths, physics, chemistry and logic. The AI does not just give the answer, it explains the solution step by step.
What it can do
- Solutions with every step explained
- A topic you did not get in class
- Checking your own solution
- Similar problems for practice
- Formulas explained in plain words
Ready prompts
Copy a prompt, replace the part in square brackets with your own, or click “Ask for free”.
“Solve this problem and explain each step as for a school student: [paste the problem]”
“Check my solution and show where the mistake is: [paste your solution]”
“Explain in plain words what a derivative is and give me three practice problems.”
Ask for free
Which AI to pick
DeepSeek V4 Pro is strong in maths and inexpensive. For olympiad-level problems pick GPT-6 Astra. Kimi K2 Thinking reasons before it answers, which helps with logic.
| Model | Good for | Freepay rate |
|---|---|---|
| DeepSeek V4 Pro | A strong DeepSeek for maths, logic and code at a low price. | ×0.66 / ×1.98 |
| GPT-6 Astra | The smartest ChatGPT model. For hard problems, research and difficult maths. | ×5 / ×25 |
| Kimi K2 Thinking | Kimi K2 that reasons first and answers second. For maths, logic and plans. | ×0.3 / ×1.25 |
| GPT-6.1 Sol | ChatGPT’s everyday model. Answers any question, writes text and code. | ×1 / ×5 |
How to get a better answer
- Write the full problem, with units.
- Ask for steps, not only the answer.
- If the answer looks off, ask to solve it another way.
- Check the arithmetic: the AI can slip.
Good to know
The AI sometimes makes calculation errors and states a wrong answer with confidence. Check the result, especially before a test.
How to start
- Try it for free in the free chat: no sign-up, KLINCH AI answers.
- For ChatGPT, Claude and other models buy a key on FunPay; it arrives right away.
- Click “Sign in with key” and pick a model in the input field.
Frequently asked questions
Can I send a photo of the problem?
Yes, the chat with a key takes photos. If the handwriting is messy, type the problem instead.
Which AI is best for maths?
DeepSeek V4 Pro for value, GPT-6 Astra for the hardest problems.
Is it free?
Simple requests are free in the free chat, with no sign-up and no key. ChatGPT, Claude and other strong models work with a key, 10x cheaper than the official price.
Is there a subscription?
No. You buy a key once and pay only for what you ask; the balance does not expire.