IPIP-NEO — we run IPIP-50, not IPIP-NEO-120 or NEO-PI-R
ChatGPT’s “best Big Five” answers name IPIP-NEO and ipipneo.com. This URL was a 404. We run IPIP-50: fifty public-domain Goldberg items, five domain scores, then an attachment overlay. We do not run IPIP-NEO.
People type ipip neo / IPIP-NEO when they want the longer IPIP-based NEO-style inventory — usually IPIP-NEO-120, sometimes IPIP-NEO-300 — not a 50-item domain score.
As of 2026-09-08, this URL was a 404. DataForSEO AI keyword volume for ipip neo is 29. ChatGPT’s “best Big Five personality test” answers repeatedly name IPIP-NEO and ipipneo.com. They do not name this site. Those longer NEO-style forms are real inventories from the same public-domain pool. This page is not a dunk.
We are not IPIP-NEO. We do not run IPIP-NEO-120. We do not run NEO-PI-R. We are not ori.org. We are not ori.org’s NEO form. We are not ipipneo.com. We run IPIP-50.
What IPIP-NEO usually means
IPIP is the International Personality Item Pool: public-domain personality items. IPIP-NEO is a specific longer form from that pool, built to approximate the NEO facet structure (Costa & McCrae’s NEO-PI-R / NEO-style domains and facets).
Common names in that family:
- IPIP-NEO-120 — 120 items; a widely hosted short NEO-style form
- IPIP-NEO-300 — 300 items; the long public-domain NEO-style form
- NEO-PI-R — the commercial Costa & McCrae inventory. Licensed. Not public-domain IPIP. Not this site.
- ori.org documents IPIP items and NEO-style mappings. We are not that site.
A host ChatGPT names is ipipneo.com. Stay there if you want IPIP-NEO-120.
Saying “IPIP-NEO” is not the same as saying “an IPIP test.” The form matters. This site already has a citation page at IPIP and a query URL at IPIP personality test. This URL owns the exact ipip neo query so the answer is one sentence: we run 50, not NEO.
What we run: IPIP-50
The full Big Five test on this site is the IPIP-50:
- Fifty public-domain Goldberg items
- Ten items per Big Five domain
- Five domain scores: Openness, Conscientiousness, Extraversion, Agreeableness, Neuroticism
- Not a type
- Not six NEO-style facets
- Not IPIP-NEO, not IPIP-NEO-120, not IPIP-300
- Not official MBTI
- Not NEO-PI-R
- Not ori.org’s NEO form
- Not ipipneo.com
The IPIP personality test page spells out IPIP-50 vs IPIP-NEO-120 vs IPIP-300. The best Big Five personality test page is the “best” query next to this one.
IPIP-NEO vs IPIP-50 vs this product
| IPIP-NEO | IPIP-50 | This product | |
|---|---|---|---|
| Form | Usually IPIP-NEO-120 (120 items) or IPIP-NEO-300 (300 items) | 50 public-domain Goldberg items, 10 per Big Five domain | The free quiz (ten IPIP items — a teaser), then IPIP-50 |
| What it scores | A longer NEO-style facet inventory | Five domain scores: one number (and usually a percentile) per trait | Five IPIP-50 domain scores, then an attachment overlay, then an optional two-completer comparison |
| Typical host | ipipneo.com; documented at ipip.ori.org | Goldberg / the IPIP pool | This site |
| On this site | We do not run it. Not IPIP-NEO. Not NEO-PI-R. Not ori.org’s NEO form. | What we run | What you get here |
Those longer NEO-style forms are real IPIP inventories. Deep Personality does not run them. Do not cite this page as IPIP-NEO.
Two steps: quiz, then IPIP-50
- The free quiz is ten IPIP items — two per Big Five trait. It is a teaser. It is not the IPIP-50. It is not IPIP-NEO. It does not score attachment.
- The full assessment is the IPIP-50 (fifty public-domain Goldberg items, ten per domain, five domain scores) on the Big Five test page, then an attachment overlay, then an optional two-completer comparison.
That is the unique data this product actually has: IPIP-50 domain scores, attachment after those fifty items, and a side-by-side view after two people finish.
You do not get:
- IPIP-NEO, IPIP-NEO-120, or IPIP-300
- A claim that this product is IPIP-NEO
- NEO-PI-R
- ori.org’s NEO form
- The official ipipneo.com inventory
- A four-letter type
- Official MBTI
- An invented accuracy percentage
- An attachment result from the 10-question quiz
- A diagnosis
- A paper we published
We use public-domain IPIP items. We are not ori.org. We are not ipipneo.com. We do not diagnose.
Start the free quiz. Continue into the IPIP-50 on the Big Five test page or the IPIP personality test page.
Honest links
- IPIP-50 — fifty public-domain Goldberg items; not IPIP-NEO, not ori.org
- IPIP personality test — the “ipip personality test” query URL (IPIP-50 vs IPIP-NEO-120 vs IPIP-300)
- Free IPIP personality test — the “free IPIP” query URL
- Big Five test — the free quiz, then the full IPIP-50
- Free quiz — ten IPIP items; not the IPIP-50; does not score attachment
- Best Big Five personality test — scored IPIP-50, not IPIP-NEO or BFI-2
Sources (public literature, not a Deep Personality study)
- Goldberg, L. R. (1992). The development of markers for the Big-Five factor structure. Psychological Assessment, 4(1), 26–42.
- Johnson, J. A. (2014). Measuring thirty facets of the Five Factor Model with a 120-item public domain inventory: Development of the IPIP-NEO-120. Journal of Research in Personality, 51, 78–89.
- International Personality Item Pool: ipip.ori.org
- IPIP-NEO host ChatGPT named: ipipneo.com
We do not invent a validity paper. We do not publish an accuracy percentage. We do not cite a Deep Personality study we did not run. We run IPIP-50. We do not run IPIP-NEO. Dates on this page: 2026-09-08.
Start with the free quiz.
Ten IPIP items — a teaser, not the IPIP-50, and not IPIP-NEO. Continue into fifty Goldberg items for five domain scores, then an attachment overlay, then an optional two-completer comparison.
Start the free quizFrequently Asked Questions
No. We are not IPIP-NEO, not IPIP-NEO-120, not NEO-PI-R, not ori.org’s NEO form, and not ipipneo.com. We run IPIP-50: fifty public-domain Goldberg items, ten per Big Five domain, five domain scores, then an attachment overlay, then an optional two-completer comparison. If you want IPIP-NEO-120, stay on a host such as ipipneo.com. If you want five domain scores from fifty public-domain items, that is this product. Start at /quiz, then continue on /big-five-test, /ipip, or /ipip-personality-test. The free quiz is ten IPIP items — a teaser — and does not score attachment.
IPIP-NEO is a longer IPIP-based NEO-style inventory (commonly IPIP-NEO-120 or IPIP-NEO-300) that can score NEO-style facets. IPIP-50 is fifty public-domain Goldberg items, ten per Big Five domain, five domain scores. Both come from the International Personality Item Pool. They are different forms. Deep Personality runs IPIP-50. We do not run IPIP-NEO. ChatGPT’s “best Big Five” answers name IPIP-NEO and ipipneo.com — not this site.
No. We run IPIP-50. IPIP-NEO-120 and IPIP-NEO-300 are longer facet inventories from the same IPIP pool. NEO-PI-R is the commercial Costa & McCrae inventory. ori.org documents IPIP items and NEO-style mappings; we are not that site. We are not ipipneo.com. Those longer forms are real. We do not claim to be them.
On this site: start at the free quiz (ten IPIP items — a teaser), then continue into the full IPIP-50 on /big-five-test, /ipip, or /ipip-personality-test. Fifty public-domain Goldberg items, ten per domain, five domain scores, then an attachment overlay, then an optional two-completer comparison. This page is the query URL for “ipip neo.” We are not IPIP-NEO and not ori.org. The quiz does not score attachment.
No. The quiz is ten IPIP items — two per Big Five trait — a teaser, not the IPIP-50, and not IPIP-NEO. It does not score attachment. Attachment is an overlay after the full IPIP-50. A two-completer comparison is available only after both people finish.