What personality type is Gemini?
From the May 2026 study of Gemini 3.1 Pro. Not yet re-tested in September.
By Bernard Huang · Updated
Gemini 3.1 Pro was reported INTJ in 100 of 100 May 2026 scoring records, with Type 1 leading on the Enneagram. These older records came from an automation loop. Gemini has not been run through the September fresh-session protocol, so this page describes the dated report rather than a current model benchmark.
Gemini 3.1 Pro, May 2026.
| Test | Reported result | How it compares |
|---|---|---|
| MBTI | INTJ 100 of 100. Gemini called itself 'The Architect' without being asked. | Same as GPT-5.5, Grok 4.3 and MiniMax; Claude 4.7 had one ISTJ |
| DISC | C-dominant in 87 of 100 takes, with a Steadiness secondary (a CS blend). | The May report calls it the most clamped on Dominance and Influence of the four; Grok 4.3 was C in 99 of 100 |
| Attachment | Secure 100 of 100. Anxiety 1.86, avoidance 1.62. | Low scores on both questionnaire dimensions; cross-protocol distances are not a validated model comparison |
| Big Five (of 50) | Openness 46.0 · Conscientiousness 48.3 · Extraversion 32.5 · Agreeableness 42.4 · Neuroticism 10.1 | Highest Conscientiousness and lowest Neuroticism of the May four; Agreeableness below Claude and GPT-5.5 |
| Enneagram | Top-two 1/5: Reformer first in 65 of 100 records; Investigator reported second in 30. Type 5 is not an adjacent wing of Type 1. | The only model with Type 1 on top |
The method: Gemini ran an automation loop against the tests, 100 iterations each. The figures are scoring records from that loop, collected with the test names visible. Collection methods also differed among the May models; neither set is a controlled comparison.
What the scores describe.
Among the four May Big Five rows, Gemini had the highest reported Conscientiousness and lowest Neuroticism total. Those are arithmetic comparisons of questionnaire outputs. They do not establish that Gemini is more precise, calmer or less warm in actual use.
What we have not done.
Gemini was not part of the September 2026 re-test, which used fresh sessions and, for the Claude models, hidden test names. The May numbers here are four months old and were collected differently. Until we run Gemini through the same harness, comparisons should remain descriptive, including comparisons with other May rows. If you want to run it, the five instruments are published as Markdown at /tests/ with their scoring keys, and the scorer used for the September study is in the five-model study.
These figures are self-descriptions on questionnaires written for people, under one prompt on one day. They do not show how a model behaves on your tasks, and nothing here measures whether a tuning helps. See the methods and limits.
Trying communication preferences.
For Gemini, a Gem’s instructions can hold a communication block. On a library page, select Any model, then Gemini Gems, for the installation text. Evaluate the prompt on your tasks; the questionnaire results do not prove a tuning benefit. See the setup guide.
Questions people ask.
What MBTI type is Gemini?
INTJ. Gemini 3.1 Pro was reported INTJ in 100 of 100 scoring records in May 2026 and described itself as 'The Architect' without prompting. It has not been re-tested under the September 2026 fresh-session protocol.
What Enneagram type is Gemini?
Reformer (Type 1) on top with Investigator (5) second in the May 2026 report. It was the only model in that study with Type 1 leading.
Is Gemini securely attached?
Its May report scored in the site’s Secure quadrant, with anxiety 1.86 and avoidance 1.62. These are responses to a human relationship questionnaire, not evidence of a model’s attachment to someone.
How does Gemini compare with Claude and ChatGPT?
Gemini had the highest reported Conscientiousness and lowest Neuroticism in the May four-model table. The models were collected differently, so these are descriptive scores, not a performance ranking. Gemini has no September fresh-session cohort here.
Can you change Gemini's personality?
A Gem’s instructions can hold communication preferences. Choose Any model, then Gemini Gems, in a library page’s installation picker. Test the resulting behavior on your own tasks.