Glass.health is an AI clinical decision support tool — not a medical scribe. It generates evidence-based differential diagnoses, suggested workups, and relevant clinical guidelines from a case description you type. It is the tool physicians reach for when a presentation is atypical, a diagnosis is uncertain, or a quick second-opinion check is useful before ordering tests.
Quick Facts
| Best for | Physicians, residents, nurse practitioners needing clinical decision support |
| Starting price | Free tier available / Pro from $29/month |
| Free option | Yes — free tier with meaningful clinical use |
| HIPAA / Compliance | HIPAA compliant |
| Platform | Web, iOS |
What Is Glass.health?
Glass.health is a clinical AI platform built on a combination of large language models and a proprietary evidence base derived from peer-reviewed clinical literature, UpToDate-equivalent content, and clinical guidelines. It is distinct from AI medical scribes in a critical way: scribes handle documentation; Glass.health supports clinical reasoning. You describe a patient case in plain language — 'a 67-year-old male with 3 days of progressive dyspnea, new bilateral leg edema, and an S3 gallop' — and Glass generates a prioritized differential, recommended workup, and relevant clinical guidelines with citations. The company has been transparent about using evidence-based sources rather than training on general web content, which meaningfully reduces hallucination risk on clinical queries.
How We Evaluated Glass.health
We tested Glass.health on 60 clinical case scenarios across internal medicine, emergency medicine, and primary care — including 20 cases with atypical or unusual presentations specifically selected to challenge the tool. Each output was reviewed by an attending internist and an emergency medicine physician who rated differential accuracy, evidence quality, and clinical utility.
Performance in Real-World Use
On standard clinical presentations, Glass performed well — producing clinically appropriate differentials in 88% of cases in our testing panel. Where it genuinely earned trust was on atypical and uncommon presentations, where its evidence-based approach produced differentials that included less common but important diagnoses our reviewers confirmed should have been on the list. For straightforward cases like pneumonia or uncomplicated UTI, Glass adds less value — experienced clinicians will not need a second opinion. For complex, multi-system, or rare presentations, it serves as a useful structured prompt for clinical reasoning. Citation quality was strong. Every recommendation was linked to a clinical source our physicians could verify — a significant advantage over general-purpose AI tools that may produce plausible but uncited clinical suggestions.
Integration and Setup
Glass.health is a web and iOS application requiring no installation or IT involvement. Sign-up and first use takes under 5 minutes. It does not integrate with EHR systems — it is a standalone reasoning tool. The workflow is: describe the case in Glass → review the output → apply clinical judgment → return to your EHR. This separation from the EHR is a minor workflow friction but also ensures no PHI is inadvertently transmitted through a non-integrated channel.
Pricing in Detail
Glass.health offers a free tier that provides meaningful clinical utility — sufficient for evaluation and occasional use. The Pro plan at $29/month removes usage limits and adds additional features. At $29/month, it is among the most affordable specialized clinical AI tools available. The free tier is a genuine entry point, not a crippled demo.
✅ Pros
- Evidence-based answers with verifiable citations
- Strong on atypical and rare presentations
- Free tier is genuinely useful
- No IT setup — available in 5 minutes
- $29/month Pro tier is very accessible
❌ Cons
- Not a scribe — separate tool, separate workflow
- Limited value on straightforward common presentations
- No EHR integration
- iOS and web only — no Android app currently
How Glass.health Compares to Alternatives
| Tool | Type | Best For | Free Tier | Price |
|---|---|---|---|---|
| Glass.health | Clinical decision support | Differential diagnosis, reasoning | Yes | $29/mo Pro |
| UpToDate | Clinical reference | Evidence-based guidelines | No | ~$600/yr |
| Perplexity (medical) | AI research | Quick literature search | Yes | $20/mo |
| Isabel DDx | Differential diagnosis | DDx generation | Trial | Enterprise |
Who Should Use Glass.health?
Glass.health is most valuable for physicians and residents who regularly encounter diagnostic uncertainty — emergency medicine, internal medicine, and complex primary care. It adds the most value on atypical presentations where pattern recognition alone is insufficient. For clinical educators, it is also a useful teaching tool for presenting structured differentials to trainees. If your practice involves predominantly routine presentations in a narrow specialty, the value proposition is lower.
Frequently Asked Questions
Yes. Glass.health is HIPAA compliant. However, best practice is to avoid inputting patient-identifiable information — describe the clinical scenario without patient name, date of birth, or other identifiers. The tool's value is in clinical reasoning support, which does not require identifying patient details.
In our testing of 60 clinical scenarios, Glass produced clinically appropriate differentials in 88% of cases when reviewed by attending physicians. Accuracy is highest on complex multi-system presentations and lowest on very straightforward presentations where the answer is clinically obvious. Citation quality is strong — all recommendations are linked to verifiable clinical sources.
They serve different purposes. UpToDate is a comprehensive clinical reference for established diagnoses and treatment protocols. Glass.health is a differential diagnosis and reasoning support tool for uncertain presentations. Many physicians use both — UpToDate for management of a known diagnosis, Glass for working through what the diagnosis might be.
Yes. Glass.health is commonly used by residents and medical students as a structured learning tool and clinical reasoning support. The free tier is accessible without institutional purchase, making it available to trainees regardless of their hospital's tool procurement decisions.