ChatGPT vs Doctors: Can AI Replace Human Medical Professionals?

ChatGPT vs Doctors: Can AI Replace Human Medical Professionals?

A doctor and a chatbot talking on a laptop screen

ChatGPT is a powerful artificial intelligence (AI) system that can generate natural language texts on various topics and domains. It is based on a large-scale neural network model called GPT-4, which has been trained on billions of words from the internet. ChatGPT has shown impressive capabilities in various tasks, such as writing essays, composing lyrics, creating jokes, and answering questions. But can it also replace doctors in providing medical advice and diagnosis?

A brain with gears and wires representing ChatGPT

ChatGPT vs Doctors

One of the potential applications of ChatGPT is to serve as a medical chatbot that can interact with patients and answer their health-related questions. This could be useful for providing quick and convenient access to health information, especially for people who live in remote areas or have limited resources. However, this also raises some ethical and practical challenges, such as how to ensure the accuracy, reliability, and safety of the AI-generated responses, and how to protect the privacy and confidentiality of the patients.

Several studies have compared the performance of ChatGPT and doctors in answering medical questions from real-world sources, such as Reddit’s r/AskDocs subreddit or the New England Journal of Medicine (NEJM) quiz. These studies have found that ChatGPT can outperform doctors in some aspects, such as providing higher quality and more empathetic responses, or generating accurate differential diagnoses for common and rare conditions. However, these studies also acknowledge some limitations of ChatGPT, such as its inability to handle image-based questions, its tendency to make up facts or lie, or its lack of clinical reasoning and evidence-based practice.

A stethoscope and a keyboard with the word ChatGPT on it

ChatGPT Diagnosis Accuracy

Another important aspect of ChatGPT’s potential as a medical chatbot is its diagnosis accuracy. How well can it identify the correct condition or disease based on the patient’s symptoms and history? This is crucial for ensuring the safety and effectiveness of the medical advice and treatment that ChatGPT may suggest.

According to some studies, ChatGPT can achieve high levels of diagnosis accuracy for various clinical scenarios. For example, one study found that ChatGPT achieved an 87% accuracy without choices and a 97% accuracy with choices when answering questions from the NEJM quiz. Another study found that ChatGPT achieved a 93.3% accuracy when generating differential-diagnosis lists for clinical vignettes with common chief complaints. However, these studies also note that ChatGPT’s performance may vary depending on the type and complexity of the questions, the specialty and domain of the cases, and the availability and quality of the choices or options.

A balance scale with a doctor on one side and ChatGPT on the other

Artificial Intelligence in Healthcare Pros and Cons

The use of artificial intelligence in healthcare has many potential benefits and drawbacks. On one hand, AI can enhance the quality and efficiency of healthcare delivery, by providing faster and more accurate diagnosis, reducing human errors and biases, improving patient outcomes and satisfaction, and lowering costs and resource consumption. On the other hand, AI can also pose some risks and challenges, such as ethical dilemmas, legal liabilities, technical difficulties, human resistance, social impacts, and unintended consequences.

Some of the pros and cons of artificial intelligence in healthcare are summarized below:

Pros Cons

- Faster and more accurate diagnosis - Ethical dilemmas

- Reduced human errors and biases - Legal liabilities

- Improved patient outcomes and satisfaction - Technical difficulties

- Lowered costs and resource consumption - Human resistance

- Enhanced innovation and research - Social impacts

- Increased access and availability - Unintended consequences

ChatGPT Medical Assistant

Given the pros and cons of artificial intelligence in healthcare, what role could ChatGPT play as a medical assistant? Could it replace doctors entirely, or could it complement them in some ways?

The answer is likely somewhere in between. ChatGPT is not ready to replace doctors completely, as it still has some limitations and challenges that need to be addressed before it can be trusted with life-and-death decisions. However, ChatGPT could also complement doctors in some ways, by providing them with additional information, insights, suggestions, or feedback that could help them improve their diagnosis and treatment. ChatGPT could also serve as a first-line triage tool that could screen patients’ symptoms and direct them to the appropriate level of care.

Therefore, ChatGPT could be seen as a potential partner or collaborator for doctors, rather than a competitor or threat. However, this also requires a careful balance between human oversight and AI autonomy, as well as clear communication and coordination between doctors and ChatGPT.

How Does ChatGPT Work?

ChatGPT works by using a large-scale neural network model called GPT-4 to generate natural language texts based on a given input or prompt. GPT-4 stands for Generative Pre-trained Transformer 4, which is a type of deep learning architecture that can learn from large amounts of data and produce diverse outputs.

GPT-4 consists of several layers of transformers, which are modules that can encode (represent) and decode (generate) texts using attention mechanisms. Attention mechanisms are techniques that allow the model to focus on the most relevant parts of the input or output texts. GPT-4 has been pre-trained on billions of words from various sources on the internet, such as books, news articles, blogs, social media posts, etc. This allows it to learn general patterns and rules of natural language.

However, GPT-4 can also be fine-tuned or adapted to specific domains or tasks by using additional data or parameters. For example, ChatGPT is a version of GPT-4 that has been fine-tuned on medical data from various sources such as PubMed articles, MedlinePlus health topics, Mayo Clinic Q&A, etc. This allows it to learn specific vocabulary and knowledge related to medicine.

When given an input or prompt such as a question or a topic, ChatGPT uses its pre-trained and fine-tuned knowledge to generate an output text that is relevant, coherent, and fluent. It does this by using a probabilistic approach, which means that it calculates the likelihood of each possible word or phrase that could follow the input or prompt, and then selects the most likely or plausible one. It repeats this process until it reaches a predefined length or end token, or until it receives a stop signal from the user.


Here are some frequently asked questions about ChatGPT:

Q: Is ChatGPT reliable?

A: ChatGPT is not 100% reliable, as it may sometimes produce inaccurate, inconsistent, or misleading responses. It may also make up facts or lie, or fail to handle complex or image-based questions. Therefore, ChatGPT should not be used as a sole source of medical information or advice, and should always be verified and supplemented by other sources, such as doctors, nurses, pharmacists, or reputable websites.

Q: Is ChatGPT safe?

A: ChatGPT is not 100% safe, as it may sometimes provide harmful, inappropriate, or unethical responses. It may also violate the privacy or confidentiality of the users, or expose them to cyberattacks, malware, or scams. Therefore, ChatGPT should not be used for sensitive or critical medical issues, and should always be used with caution, discretion, and common sense.

Q: Is ChatGPT free?

A: ChatGPT is not free, as it requires access to a cloud-based service that charges fees based on usage or subscription. The fees may vary depending on the provider, the plan, the features, and the volume of requests. However, some providers may offer free trials, discounts, or grants for certain users, such as students, researchers, or non-profit organizations.

Q: How can I use ChatGPT?

A: You can use ChatGPT by accessing one of the online platforms or applications that offer it as a service or feature. For example,

You can use, which is an official website that allows you to chat with ChatGPT on various topics.

You can use MediBot, which is an unofficial website that allows you to ask medical questions to ChatGPT.

You can use DoctorBot, which is an unofficial mobile app that allows you to consult with ChatGPT about your health issues. However,you should always read the terms and conditions, the privacy policy, and the disclaimer of each platform or application before using them, as they may have different rules, regulations, and limitations  regarding the use of ChatGPT.


ChatGPT is a powerful AI system that can generate natural language texts on various topics and domains, including medicine. It has shown impressive capabilities in answering medical questions and generating differential diagnoses, outperforming doctors in some aspects, such as quality and empathy. However, it also has some limitations and challenges that need to be addressed before it can be trusted with life-and-death decisions, such as accuracy, reliability, safety.

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