Phases blog · Jul 2026
Explains how Phases approaches clinical-trial AI with security, compliance, and auditability as the core design constraints.
Automating clinical trials, starting with patient recruitment.
Company research
Public company, workplace, funding, and market signals
Updated Jul 30, 2026
Overview
Phases is a San Francisco-based, YC-backed healthtech startup building AI agents for clinical trial operations, starting with Polly, an AI recruiter that automates patient outreach, prescreening, scheduling, and trial oversight.
Primary product
Polly, an AI recruiter and operations agent for clinical trials.
Founded
2025
Headquarters
San Francisco, California, United States
Team size
1-10 employees
Industry
Healthcare IT
Sub-industry
Clinical trial operations and recruitment automation
Offices
San Francisco, California, United States
Business model
B2B SaaS
enterprise software
Funding
Stage
pre-seed
Total raised
$500K
Latest round
Pre-Seed · Oct 2025
Latest amount
$500K
Oct 2025 · Y Combinator
People & investors
Leadership
Co-Founder & CEO
Co-Founder & Chief AI Officer
Co-Founder & CTO
Work & culture
Founder-led and security/compliance-first, with public messaging centered on auditability, controlled access, cited outputs, human escalation, and customer-specific data isolation for clinical operations.
Product & market
Pricing
Not publicly listed; appears sales-led and demo/custom-contract based.
Differentiators
- —Specialized AI agents rather than generic copilots
- —Fits into existing EDC/TMF/CTMS workflows
- —24/7 patient outreach and prescreening
- —Human approval for critical actions
- —Cited outputs and independent verification
- —Dedicated isolated customer environments
- —No new tools or logins for users
Technology
EDC
TMF
CTMS
SMS
voice
chat
email
HIPAA
GDPR
SOC 2 Type II
21 CFR Part 11
ICH GCP
AES-256 encryption
TLS
isolated customer environments
audit trails
human-in-the-loop approvals
Customers
clinical research sites
CROs
pharmaceutical sponsors
Competitors
Deep 6 AI
Trialbee
Science 37
Antidote
Elligo Health Research
Careforce
HealthKey
Delineate
Convexia
Scale & contact
Estimated revenue
~$330K estimated ARR (third-party estimate)
Estimated monthly visits
3.5K
Traffic estimate as of Jul 2026
Latest news
Phases blog · Jul 2026
Argues that clinical-trial agents need controlled access, cited outputs, independent verification, human escalation, and regression evals.
LinkedIn post · Jul 2026
Highlights a 21 CFR Part 11 audit-trail risk case and reinforces Phases' compliance positioning.
LinkedIn post · Jun 2026
Frames AI as a way to make trial review and follow-through much cheaper, enabling broader oversight at scale.
LinkedIn post · Jun 2026
Says generic copilots are insufficient for clinical development and that specialized agents are needed for ClinOps workflows.
Jobs and careers at Phases
0 jobs at Phases
No open positions
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