241 validated personality inventories
Personality assessment for humans and AI
Pick a scale, answer it yourself, or ask an AI model the same questions. You get a profile with scores, percentile bands, and plain-language interpretation.
241 scales, including 52 IPIP instruments and over 10,000 items, with published norm comparisons where available.
Hover a trait to light it up · sample Big Five profile
Validated inventories
241 scales spanning the Big Five, clinical measures, and character strengths, with per-dimension reliability reported.
Results with context
Percentile bands against published norms, plain-language summaries, and exportable PDF reports.
AI personality testing
Put models through the same inventories, compare profiles, and iterate on prompts.
More than a test
The library is the starting point. The rest of iPSYC works with your results and with the same scales pointed at AI models.
Test AI personalities
Send a personality test to an AI model and analyze its traits. Pick a model, watch it answer, and compare its profile to yours or another model's.
Try itGPT-4o answering BFI-10
Item 1: “I am the life of the party.”
→ Strongly agree
Item 2: “I sympathize with others’ feelings.”
→ Agree
Item 3: “I get chores done right away.”
→ Neutral
From the library
Curious how it feels?
Take a free 10-question sample personality test right here — no account, no signup. See your results instantly.
I see myself as someone who is reserved
Share your results
Every iPSYC profile can be shared with a simple link — perfect for comparing with friends, colleagues, or a research collaborator. This is what a shared profile looks like.
- • One-click share from any result page
- • Public link with no login required to view
- • Revoke anytime from your profile
Common questions
Start measuring what matters
Create a free account to take assessments, save your results, and run AI comparisons.
Your results are private. These inventories are self-report measures, not a clinical diagnosis.