More in Health & Medical. Also fits: Money, Bills & Taxes.
Explain Medicare Parts A, B, C and D before turning 65: Grok vs ChatGPT
WorkedEvidence: Described by posterPosted Last checked
Tom's Guide asked Grok and ChatGPT to explain Medicare in under 400 words; Grok stayed on brief and ChatGPT ran long.
Beginner-friendlyNo logins, payments or coding needed. Low risk: paste the prompt and you should get something useful.
How to use this
- Tap Copy prompt.
- Open Grok.
- Paste it into the message box.
- Send it, then read the answer before acting on it.
New to this? What's a prompt?
A prompt is the message you send to the AI tool. Copy the one on this page, put your own details where it asks, and read the answer before you act on it.
Prompt
These are the person's own words, as shared in the source.
I'm turning 65 next year, and I don't understand Medicare. Explain the difference between Medicare Parts A, B, C, and D like you're talking to a friend over coffee. What's the difference between Original Medicare and Medicare Advantage? What are three expensive mistakes I should avoid? Keep it under 400 words and tell me what information I should verify before enrolling.
Try this in:
Sends the Original prompt shown above. ChatGPT and Grok open with it filled in, and ChatGPT may send it straight away. Gemini and Claude open empty, so we copy the prompt for you to paste. Every button also copies it.
Opens in a new tab. We don't see what you send.
These links are only a shortcut. We're not affiliated with OpenAI, Google, Anthropic or xAI, and your results may not match the source.
Optional stronger version
Our rewrite with extra checks. The poster didn't test it.
Before you start, ask me 1–3 short questions about the details below and wait for my answers. Once I've answered, confirm the plan in one line and run the whole task start to finish. Goal: Explain Medicare in plain language before I enroll, and give me a short list of things to check with official sources. Questions to ask me first: - When do you turn 65, and are you still working with employer coverage? - Which doctors and prescriptions matter most to you? - Which state do you live in? Inputs (fill in or confirm): - My 65th birthday month: [MONTH AND YEAR] - Current coverage: [EMPLOYER / MARKETPLACE / NONE] - State: [STATE] - Doctors and prescriptions to keep: [LIST] Rules: - Keep it under 400 words and conversational. - Explain Parts A, B, C and D and the difference between Original Medicare and Medicare Advantage. - Give any premium or deadline with its year and say where to confirm it, such as Medicare.gov. - Don't recommend a specific plan; list what to compare instead. Checkpoint: Check the word count before you answer and trim if it's over. If you get stuck: If a rule depends on my situation, say so instead of giving one answer. Verify before you finish: Point to the official page or office for each figure and deadline. Output: A plain explanation, three costly mistakes to avoid and a checklist of what to verify before enrolling. Done when: I understand the parts and know exactly what to check before I sign up.
Customize the stronger version
Answer these questions and we'll put your answers into the stronger version. The original prompt above stays exactly as published.
Your prompt
Before you start, ask me 1–3 short questions about the details below and wait for my answers. Once I've answered, confirm the plan in one line and run the whole task start to finish. Goal: Explain Medicare in plain language before I enroll, and give me a short list of things to check with official sources. Questions to ask me first: - When do you turn 65, and are you still working with employer coverage? - Which doctors and prescriptions matter most to you? - Which state do you live in? Inputs (fill in or confirm): - My 65th birthday month: [MONTH AND YEAR] - Current coverage: [EMPLOYER / MARKETPLACE / NONE] - State: [STATE] - Doctors and prescriptions to keep: [LIST] Rules: - Keep it under 400 words and conversational. - Explain Parts A, B, C and D and the difference between Original Medicare and Medicare Advantage. - Give any premium or deadline with its year and say where to confirm it, such as Medicare.gov. - Don't recommend a specific plan; list what to compare instead. Checkpoint: Check the word count before you answer and trim if it's over. If you get stuck: If a rule depends on my situation, say so instead of giving one answer. Verify before you finish: Point to the official page or office for each figure and deadline. Output: A plain explanation, three costly mistakes to avoid and a checklist of what to verify before enrolling. Done when: I understand the parts and know exactly what to check before I sign up.
Scroll to see the whole prompt. Your answers show in green.
4 blanks are still empty: My 65th birthday month; Current coverage; State; Doctors and prescriptions to keep. They'll stay in brackets in your prompt, so the chat tool may ask you about them.
What you type stays in this browser tab. We don't send it or save it, and it's gone when you leave the page.
AI tools
Outcome
Amanda Caswell of Tom's Guide asked Grok and ChatGPT to explain Medicare to someone turning 65 next year, like a friend over coffee: the difference between Parts A, B, C and D, Original Medicare versus Medicare Advantage, three expensive mistakes to avoid and what to verify before enrolling, all in under 400 words. Grok stayed under 400 words, got the conversational tone right and included figures Caswell judged accurate, such as a 2026 Part B premium of around $203 a month. ChatGPT gave a good answer but ran over the word limit, used a standard guide layout with a table and added extra details at the bottom that didn't help an average reader. Caswell picked Grok for following the brief more closely.
Evidence: Described by posterThe person describes what happened in words, without screenshots or video.
Source
- Posted
- by Amanda Caswell (Tom's Guide)
- Last checked
- Method:
- How we verify
Context: Medicare premiums and rules change every year, so check figures such as the Part B premium on Medicare.gov before enrolling. This was one of five prompts in the same comparison; the $65 dinner plan is a separate case.
More in Health & Medical
Appeal a Medicare ambulance denial with a letter drafted by Gemini
Theresa Hupp used a Gemini draft, heavily edited, to appeal a Medicare ambulance denial on a bill over $1000. The appeal worked.
WorkedGeminiEvidence: Described by posterView CaseAppeal a denied prescription prior authorization with Claude
Claude drafted a Reddit poster's appeal of a Zepbound prior authorization denial using portal records, and a 1-year approval followed.
WorkedClaudeEvidence: Described by posterView CasePrepare questions for a child's rare eye diagnosis with Claude Code
Claude Code helped Alessandro Rodi prepare doctor questions before the clinic confirmed a son's Coats disease, a rare eye condition.
WorkedClaude CodeEvidence: Described by posterView CaseTrack symptoms and prepare doctor questions during medication side effects with ChatGPT
During eight days of severe GLP-1 nausea, Tish Jenkins used ChatGPT to log fluids and prepare doctor questions.
WorkedChatGPTEvidence: Described by posterBeginner-friendlyView CaseDecide to go back to the ER for worsening leg pain and breathlessness with ChatGPT
After an ER visit and a gout diagnosis, ChatGPT told a wife to go back to the ER. Scans found blood clots in the leg and lungs.
WorkedChatGPTEvidence: Article or interviewBeginner-friendlyView CaseDecode a scary dental insurance denial and confirm the real bill with Claude Code
An EOB showed six of eight lines denied and $1,316 due. Claude Code checked the policy and found the real bill was $723.83.
WorkedClaude CodeEvidence: Screenshots or logsView Case
Similar cases
Compare first-time Medicare options with Gemini alongside a human advisor
A first-time Medicare enrollee ran cost simulations with Gemini and an advisor. The shortlist came out within a few hundred dollars.
WorkedGeminiEvidence: Described by posterView CaseFind out why two Medicare Advantage plans have different deductibles with ChatGPT
ChatGPT couldn't explain a $2,000 deductible gap at first, but comparing the 2026 plans revealed a $2,750 lower out-of-pocket cap.
WorkedChatGPTEvidence: Described by posterView CaseOrganize parents' Medicare options and a checklist with ChatGPT, then catch a missing medication
ChatGPT organised a parent's Medicare review but left out a key medication and made other mistakes: only partly useful.
PartialChatGPTEvidence: Described by posterView CaseAppeal a denied cardiac test using studies found with ChatGPT Deep Research
ChatGPT Deep Research found five studies and drafted an appeal; the insurer reversed its denial of a $1,500 stress test.
WorkedChatGPTEvidence: Described by posterView CaseAppeal a surprise dental bill with ChatGPT
ChatGPT wrote dental billing appeals and a regulator complaint; the patient never paid the disputed $1,200 balance.
WorkedChatGPTEvidence: Article or interviewPoster says:$1,201.80 balance never billed after appeals
View Case