Pymander vs Dr.Khan AI: which free AI doctor fits you?
Last updated September 20, 2026.
Both Pymander and Dr.Khan AI are free AI doctors, so the choice comes down to privacy shape versus continuity. Dr.Khan AI is anonymous by design: no signup, no data stored, and every session is ephemeral, so nothing follows you between visits. Pymander is the opposite trade: it works entirely over ordinary text message with no app to download, asks for your name, date of birth, and sex, and uses that record so each consult picks up where the last one ended. Both are free. Neither replaces your own physician.
How they compare
- How you talk to it: Dr.Khan AI runs as a web chat and an iPhone app, with real-time streaming replies. Pymander is plain SMS or iMessage to +1 (689) 528-6964, so it works on any phone with zero setup and nothing to install.
- Privacy: Dr.Khan AI collects nothing - no signup, no tracking, no stored data, ephemeral sessions. Pymander is not anonymous: it asks for your name, date of birth, and sex, because it keeps a clinical record on purpose. That record is what lets it remember you.
- Memory: Dr.Khan AI sessions are ephemeral by design, so every visit starts from zero. Pymander carries your history forward, so each consult starts where the last one ended.
- Price: both are free to consult. Neither bills insurance.
- Extras: Dr.Khan AI can analyze uploaded lab reports and generate wellness plans. Pymander ends every consult with a written care note you can share with your own doctor through a signed link, and runs a red-flag check on every consult with direct escalation when something needs emergency or same-day care.
- Published evidence: Dr.Khan AI states that its medical reasoning scores comparably to GPT-4 on MedQA. Pymander publishes its full evaluation: 98.2% on the USMLE across two independent, fully logged runs, and a HealthBench Hard mean of 0.3331 (N=999) on a sealed, pre-registered run, top five against every published result (the evals page).
- Best fit: Dr.Khan AI if you want a one-off, fully anonymous answer with nothing stored anywhere. Pymander if you want the same free consult but with a record that persists, memory across visits, and a care note your own doctor can read.
Neither service replaces your own physician, and both say so themselves. For emergencies, call 911.
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