# How much of League's code is written by AI agents?

> League, which builds software for health plans and providers, went company-wide on Claude. Anthropic's Q&A says roughly 98% of League's code is AI-authored and Claude adoption reached 98%, up from 80% at rollout.

- **Evidence grade:** B — Named organization with a quantified outcome, from the vendor or the organization's own announcement.
- **Organization:** League (healthcare consumer-experience software company)
- **Industry:** Software, Internet & Media — Health tech SaaS (health plans and providers)
- **Roles:** Software Engineering
- **Tools:** Claude Enterprise / Claude Code (Anthropic)
- **Status:** production · **Agent pattern:** autonomous-agent · **Autonomy:** 2/4
- **Last verified:** 2026-10-17

## Reported outcomes
- AI-authored code: roughly 98% [1] (self-reported)
- adoption: 98%, up from 80% [1] (self-reported)

## How it works
1. Company-wide Claude Enterprise rollout.
2. Engineers delegate most code authoring to AI with human review.

## Risks & compliance
- AI-written code or fixes need review before production
- Access to production systems and logs
- Vendor-published results; not independently audited
- Regulated healthcare data in products

## Sources
1. Anthropic, "Case Study: League" (undated; accessed 2026-10-17) <https://claude.com/customers/league-qa>
   > "yet roughly 98% of League's code is AI-authored."

Canonical: https://agentcasefile.com/cases/league-claude-ai-authored-code/ · License: CC BY 4.0 (summary) · Source: Agent Casefile