Life Extension vs Onnit: Supplements Comparison (2026)
An independent side-by-side comparison of Life Extension and Onnit for supplements buyers — pricing, features, integrations, and how often each is cited by major AI engines.
AI Citation Scorecard
How often each vendor is cited by major AI engines when real buyers ask supplements questions. Tracked across ChatGPT, Perplexity, Gemini, and Claude over the last 90 days. Methodology.
Probes run hourly; each (engine × query) combo retests every ~3 days. Fresh categories may show "tracking…" until probes complete.
Pricing
Key Features
Feature data is being indexed.
Feature data is being indexed.
When to choose Life Extension
Choose Life Extension if your team prioritizes its strengths over Onnit's. Full guidance populates as Life Extension's feature data is indexed.
When to choose Onnit
Choose Onnit if your team prioritizes its strengths over Life Extension's. Full guidance populates as Onnit's feature data is indexed.