DeepSeek vs ChatGPT: Which AI Tool Passes JEE Main 2025 Session One Paper Test

Every year, over a million students take the Joint Entrance Examination (JEE Main), one of the toughest entrance exams in the world. As artificial intelligence (AI) tools continue to rise in popularity, many are curious if platforms like ChatGPT and DeepSeek can handle JEE Main-level questions. To explore this, we asked both AI tools to solve questions from the JEE Main January 28, Shift-2 exam. Let’s take a closer look at their performances.

Physics Questions

Question 1: Find the value of RR such that VA=VBV_A = V_B and also determine the current in the circuit.

ChatGPT: Offered the formula to solve the problem but did not compute the final answer.

DeepSeek: Successfully solved the problem, calculating the value of RR and the current in the circuit.

Answer: The solution for RR can be obtained using Ohm's law and the voltage divider principle. However, the specific answer would depend on the given values of voltage and resistance in the circuit.

Question 2: For a concave mirror, the distance between the object and image is 20 cm, and the magnification m=−3m = -3. Find the focal length.

ChatGPT: Provided the formula to solve the question but did not provide the final answer.

DeepSeek: Solved the problem step-by-step, arriving at the correct focal length.

Answer: The magnification mm is given by the formula m=−vum = \frac{-v}{u}, where vv is the image distance and uu is the object distance. Using the mirror formula 1f=1v+1u\frac{1}{f} = \frac{1}{v} + \frac{1}{u}, DeepSeek correctly solved for the focal length f=10 cmf = 10 \, \text{cm}.

Chemistry Question

Question: How many of the following substances are paramagnetic?

DeepSeek: Correctly identified the number of paramagnetic substances and provided a clear explanation.

ChatGPT: Answered the question but lacked the detailed reasoning provided by DeepSeek.

Answer: The correct number of paramagnetic substances can be identified based on the presence of unpaired electrons in their atomic or molecular structure. DeepSeek gave a precise answer and explanation, identifying the paramagnetic substances correctly.

Mathematics Questions

Question 1: Bag 1 has 6 white and 4 black balls, Bag 2 has 4 white and 6 black balls, and Bag 3 has 5 white and 5 black balls. A bag is drawn at random. What is the probability that a white ball is taken from Bag 2?

DeepSeek: Provided the correct answer 415\frac{4}{15} along with a step-by-step explanation.

ChatGPT: Used Bayes’ theorem to calculate the conditional probability but did not simplify the answer as clearly as DeepSeek.

Answer: The probability of drawing a white ball from Bag 2 is calculated by multiplying the probability of choosing Bag 2 (1/3) by the probability of drawing a white ball from it (4/10). Therefore, the total probability is 13×410=415\frac{1}{3} \times \frac{4}{10} = \frac{4}{15}.

Question 2: The interior angles of a polygon with nn sides are in an arithmetic progression (AP) with a common difference of 6°. If the largest interior angle is 219°, find the value of nn.

DeepSeek: Correctly calculated n=20n = 20 using the formula for interior angles.

ChatGPT: Used the sum of interior angles formula but did not arrive at the correct answer as efficiently as DeepSeek.

Answer: Using the formula for the sum of interior angles of a polygon, Sum of angles=(n−2)×180∘\text{Sum of angles} = (n - 2) \times 180^\circ, and the fact that the angles are in AP, DeepSeek correctly deduced that the polygon has 20 sides.

Conclusion

Both ChatGPT and DeepSeek demonstrated their ability to solve JEE Main-level questions, but DeepSeek stood out with its more accurate, detailed solutions and step-by-step explanations. While ChatGPT provided theoretical approaches and formulas, it often missed computing the final answers or simplifying them clearly. DeepSeek, on the other hand, not only delivered precise answers but also ensured that the reasoning was easy to follow.

AI tools like ChatGPT and DeepSeek are revolutionizing how students prepare for competitive exams like the JEE Main. While they can significantly help in simplifying complex problems and providing instant solutions, students should use these tools as supplements to their studies. It’s essential to understand the underlying concepts and reasoning behind each solution for effective exam preparation.