Cohere Health vs Prosper AI (2026)
One vendor is trying to make prior authorization decisions faster inside the plan, and the other is automating the phone calls providers make because those decisions are slow and hard to find out about. Cohere applies clinical AI across the plan's utilization estate with accreditation behind it, which matters because the carrier stays responsible for compliance no matter who does the work. Prosper handles the provider's voice surface in both directions, payer calls outbound and patient scheduling, intake and billing inbound, and it names its model provider, which almost nobody here does. If the payer side succeeds completely, part of the provider side product becomes unnecessary. That is the honest way to read this pair, and it is why the interoperability question sits underneath both.
- It applies clinical AI across the plan's whole utilization estate, covering review, payment integrity, appeals, care management and policy work with one consistent model.
- Accreditation is held, which matters because a carrier remains responsible for prior authorization compliance regardless of which vendor performed the work.
- For a plan, a single model of medical necessity applied consistently is worth more than a sharper tool used in one place.
- It automates the provider's side of the conversation, calling payers and handling patient scheduling, intake and billing questions on one voice layer.
- It names OpenAI as its model provider under a zero day retention agreement, and publishes a clear protected health information position.
- For a practice, one voice vendor covering inbound patients and outbound payer calls avoids running two contracts.
This comparison is published by AI Health Index, an independent research platform that compares healthcare AI vendors objectively. Cohere Health and Prosper AI are each graded against the same capability taxonomy, from each vendor's own public materials and the regulatory record, under the AI Health Index verification standard. No vendor pays for placement, and no vendor has reviewed this page. How this evidence is graded
Plain facts
| Fact | Cohere Health | Prosper AI |
|---|---|---|
| Primary category | RCM & Prior Auth AI | Patient Voice Agents |
| Founded | Not recorded | 2023 |
| Headquarters | Boston, Massachusetts | New York, New York |
| Website | coherehealth.com | getprosper.ai |
Side by Side
Select any grade to read the note behind it.
Product updates
The latest logged changes from each vendor, newest first, each linked to its source.
Cohere Health
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Product / capability
Cohere Health extended its intake, decision and review tools on Cohere Unify to medical benefit drugs, the specialty and provider administered drugs that run through a plan's medical benefit rather than its pharmacy benefit.
Source -
Clinical evidence
Cohere Health published performance results for Cohere Capture, which extracts HEDIS gap closures and denominator exclusions from clinical data a health plan already holds, including prior authorization notes, imaging reports and EHR data.
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Product / capability
Cohere Health acquired ZignaAI in September 2025 and launched the Cohere Payment Integrity Suite, extending its clinical AI from pre service prior authorization into post service claims and coding validation.
Source
Each vendor in one paragraph
Written to be quoted whole. Each paragraph opens the AI Health Index profile of the vendor: what the product is, who buys it and what it does.
Cohere Health sells a clinical intelligence platform, Cohere Unify, to health plans. Its modules cover utilization management, payment integrity, appeals, care management, claims operations and HEDIS quality work. Prior authorization requests arrive through Cohere's portal, its APIs, Availity, NaviNet or a provider's Epic workflow.
Source: AI Health Index, August 2026
AI voice agents for patient access and revenue cycle calls. Alongside patient calls for scheduling, intake, refills and billing questions in up to 45 languages, the agents call payers directly, navigating IVR trees and speaking with representatives to obtain benefits and prior authorization details, then write structured results, recordings and transcripts back to the EHR or practice management system (athenahealth, eClinicalWorks, AdvancedMD and Epic named).
Source: AI Health Index, August 2026
Questions buyers ask
How do Cohere Health and Prosper AI work with the EHR?
Cohere's platform page also names Availity, NaviNet and Rhyme as routes in, and lists the CMS-0057-F prior authorization APIs (coverage requirements, documentation templates and prior authorization support) built to the HL7 Da Vinci guides. Plans can embed the service in their own systems through Cohere's APIs, and providers can also use its portal.
Prosper's FAQ says it integrates with athenahealth, eClinicalWorks, AdvancedMD and Epic through the integration pathways those systems support, and writes back appointment changes, patient and insurance details, benefits verification outcomes, staff notes, recordings and transcripts. From the AI Health Index, drawn from each vendor's own published materials and the regulatory record, verified August 4, 2026. No vendor pays for placement.
How are Cohere Health and Prosper AI priced and sold?
Cohere sells to health plans in three shapes: a platform the plan's own clinicians run, delegated utilization management run by Cohere's clinicians for named specialties, and APIs embedded into plan systems; payment integrity is sold in house or as a managed audit service. The only economics published are returns, up to 18x for prior authorization and 9x for payment integrity, which say what a plan gets back and not what it pays.
Prosper sells through enterprise agreements with provider groups and billing organizations and publishes no rate card. From the AI Health Index, drawn from each vendor's own published materials and the regulatory record, verified August 4, 2026. No vendor pays for placement.
How do Cohere Health and Prosper AI handle patient data?
Cohere's AI principles state the AI never uses explicit patient identifiers, such as names or locations, for care recommendations, and its AI Hub describes a minimum necessary approach that reads only the clinical information a decision needs.
Prosper's HIPAA guide states a zero day retention agreement with OpenAI, its model provider, so protected health information sent to the model is not retained there or used for training, and daily backups kept under a 30 day retention policy. What is not stated is how long call recordings and transcripts are kept in Prosper's own environment, or whether any de identification occurs before QA scoring. From the AI Health Index, drawn from each vendor's own published materials and the regulatory record, verified August 4, 2026. No vendor pays for placement.
What evidence is published for Cohere Health and Prosper AI?
Cohere's August 2026 case study reports a partnership since January 2021 covering 5.1 million Medicare Advantage and commercial members in all 50 states. It reports 95 percent of providers submitting digitally, 89 percent of requests approved automatically, time to service five days shorter and 54 percent fewer nurse review hours, with 94 percent of providers satisfied.
Prosper reports a Northeast OB/GYN group with about half of scheduling calls automated and a Northeast GI group of more than 100 providers with more than half of front desk scheduling and waitlist volume handled by AI within weeks, and says re engagement campaigns can lift appointments 20 percent or more. From the AI Health Index, drawn from each vendor's own published materials and the regulatory record, verified August 4, 2026. No vendor pays for placement.
Related comparisons
Other published head to head assessments involving these vendors or their closest peers.
These serve opposite parties and the honest observation is that provider side voice automation exists because payer side processes are slow and opaque, which the payer side vendor is separately trying to improve. Neither publishes a bias evaluation.
On the voice side, recording consent is the calling organization's obligation and several states require all party consent, and no vendor in that group publishes what happens when a payer representative supplies incorrect information that then flows into the revenue cycle. Neither publishes pricing.