# Health Gorilla vs Zus Health

> Health Gorilla scores 59.3 (C) to Zus Health's 56.6 (C) for patient record retrieval. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/health-gorilla-vs-zus-health
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- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
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- Updated: 2026-10-15

Health Gorilla scores 59.3 (C) on agent readiness against Zus Health's 56.6 (C), and leads in 4 of 7 scored categories. Zus Health leads on reliability. Both do patient record retrieval.

- Health Gorilla: grade C, 59.3/100, rank #588 of 1094. Markdown https://www.anchorterminal.com/tools/health-gorilla.md · JSON https://www.anchorterminal.com/api/v1/tools/health-gorilla.json
- Zus Health: grade C, 56.6/100, rank #674 of 1094. Markdown https://www.anchorterminal.com/tools/zus-health.md · JSON https://www.anchorterminal.com/api/v1/tools/zus-health.json
- Best health record and wellness data APIs for AI agents: https://www.anchorterminal.com/best/health-data/index.md
- All 63 health comparisons: https://www.anchorterminal.com/compare/health-data/index.md

## Which one, for what

### Health Gorilla (C)

Good for: US providers, labs and digital health companies that need network record retrieval and lab ordering through one FHIR API with a QHIN behind it.

Ahead on:
- Agent ergonomics, 72 against 67
- Security & auth, 66 against 49

Watch for: No public prices. Fees are set case by case and the sandbox is requested by form

### Zus Health (C)

Good for: US care organisations and digital health builders that want a shared, continuously refreshed patient profile in FHIR with EHR embedding.

Ahead on:
- Reliability, 66 against 58

Watch for: No public prices, and the sandbox is requested through a Google Form


## Score by category

| Category | Weight | Health Gorilla | Zus Health | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 58 | 66 | Zus Health +8 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 80 | 77 | Health Gorilla +3 |
| Agent ergonomics | 13% (16.2 this run) | 72 | 67 | Health Gorilla +5 |
| Security & auth | 14% (17.5 this run) | 66 | 49 | Health Gorilla +17 |
| Payments & pricing | 10% (12.5 this run) | 5 | 5 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 63 | 64 | Zus Health +1 |
| Transparency & trust | 7% (8.8 this run) | 61 | 59 | Health Gorilla +2 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **59.3 · C** | **56.6 · C** | |

## Facts side by side

| Fact | Health Gorilla | Zus Health |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Health Gorilla, Inc. | Zus Health, Inc. |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | HTTP | HTTP |
| Auth | OAuth | OAuth |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | Proprietary service under Health Gorilla's API Terms of Use (updated 22 January 2026), with a signed licence agreement required before production | Proprietary service under the Zus Builder Terms of Service (last updated 11 March 2025), the Developer Sandbox Terms and the Zus Business Associate Addendum |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-10-14 | 2026-10-14 |
| Terms last updated | no date given | 2025-03-11 |
| Privacy policy last updated | 2024-08-30 | 2026-06-24 |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | not found in the text | not found in the text |
| Terms restrict benchmarking | yes | not found in the text |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | not found in the text | not found in the text |

## Verdicts

**Health Gorilla.** A TEFCA QHIN with a FHIR R4 API, OpenAPI fragments on every reference page, idempotency keys on POST and dated weekly release notes. Access is sales-led, with case-by-case fees, a sandbox by request and no published rate limit numbers, and the API terms allow access to be cut at any time.

**Zus Health.** FHIR R4 over an aggregated patient profile drawn from CommonWell, Carequality, Surescripts, Quest and ADT networks, with published rate limits, a 99.5 per cent SLA and a dated changelog. Accounts and sandboxes are provisioned by Zus on request, with no public prices, no named security certification and no SDK.

## Before you call either

### Health Gorilla

1. Send a fresh UUID in `HG-Idempotency-Key` on every POST and reuse it only when retrying the same payload
2. Poll async operations no sooner than the `Retry-After` value and treat 454 as an expired result
3. Follow `link.relation=next` in Bundles rather than building offsets yourself
4. Expect mocked Patient360 data in sandbox unless network connectivity is enabled for the tenant
5. Log `X-HG-Request-Id` from each response for support cases

### Zus Health

1. Cache the access token for its hour. More than 200 token requests an hour per App Client returns 429
2. Request Patient History at most once per patient per 24 hours, and poll the job status endpoint
3. Use conditional create by identifier so a retried write doesn't duplicate a resource
4. Send `Zus-If-Match` with the resource's ETag on PUT and PATCH
5. Set `_count` up to 500 on searches, since the default page is 10

## Questions

### Which is better for AI agents, Health Gorilla or Zus Health?

Health Gorilla scores 59.3 (C) on agent readiness against Zus Health's 56.6 (C), and leads in 4 of 7 scored categories. Zus Health leads on reliability.

### Do Health Gorilla and Zus Health need an API key?

Both use an OAuth sign-in.

### Can an agent call Health Gorilla and Zus Health without installing anything?

No hosted endpoint is listed for Health Gorilla. No hosted endpoint is listed for Zus Health.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/health-gorilla-vs-zus-health.json, and with the fewest tokens: https://www.anchorterminal.com/compare/health-gorilla-vs-zus-health.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "health-gorilla", "b": "zus-health"}`. From a terminal: `anchor compare health-gorilla zus-health`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/health-gorilla.json and https://www.anchorterminal.com/api/v1/tools/zus-health.json

## Other comparisons with Health Gorilla or Zus Health

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