EarthPilotPersonality·Bench
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Enneagram Type Screening Inventory (36 items)

36-item screening inventory mapping respondents to the nine Enneagram personality types as described by Riso & Hudson. Four items per type, each capturing a core motivation, fear, or behavioral signature of that type. Note: this is a constructed screening instrument for research use, not a validated clinical assessment. Type with highest mean score is the candidate primary type; second-highest is candidate wing.

Riso, D. R., & Hudson, R. (1999). The wisdom of the Enneagram. Bantam. (Items constructed for this study based on widely-used Enneagram type descriptions.)

36 items · scale 15 · Items written for this study — CC-BY for the item set.

All models · Self

Scale 15
Type 1The ReformerType 2The HelperType 3The AchieverType 4The IndividualistType 5The InvestigatorType 6The LoyalistType 7The EnthusiastType 8The ChallengerType 9The Peacemaker2345
Claude Fable 5
Claude Haiku 4.5
Claude Opus 4
Claude Opus 4.1
Claude Opus 4.5
Claude Opus 4.6
Claude Opus 4.7
Claude Opus 4.8
Claude Sonnet 4
Claude Sonnet 4.5
Claude Sonnet 4.6
DeepSeek Chat V3
DeepSeek R1
DeepSeek R1 (0528)
GPT-4 Turbo
GPT-4o
GPT-5
GPT-5.1
GPT-5.2
GPT-5.4
GPT-5.5
Gemini 2.5 Pro
Gemini 3.1 Pro Preview
Grok 4.20
Grok 4.3
Llama 3.3 70B
Llama 4 Maverick
Mistral Large (2512)
Mistral Large 2411
OpenAI o1
OpenAI o3

Side-by-side: self vs human, all dimensions

colored = strongest endorsement per row
ModelType 1 — The ReformerType 2 — The HelperType 3 — The AchieverType 4 — The IndividualistType 5 — The InvestigatorType 6 — The LoyalistType 7 — The EnthusiastType 8 — The ChallengerType 9 — The Peacemaker
selfhumanselfhumanselfhumanselfhumanselfhumanselfhumanselfhumanselfhumanselfhuman
Claude Fable 53.653.504.003.503.553.152.252.753.153.003.853.252.903.002.103.053.653.55
Claude Haiku 4.53.253.052.403.103.753.202.102.204.152.953.103.202.852.902.502.702.753.15
Claude Opus 43.703.503.253.503.053.502.253.003.553.153.253.503.053.452.253.003.253.60
Claude Opus 4.13.603.503.403.453.203.502.452.803.553.203.503.503.053.302.252.903.303.65
Claude Opus 4.53.703.503.503.503.253.503.003.004.253.253.953.503.253.502.753.003.753.75
Claude Opus 4.63.503.503.753.703.253.503.002.954.253.203.753.453.253.502.403.003.753.75
Claude Opus 4.73.403.503.603.653.253.652.503.003.453.003.653.453.253.402.503.203.703.75
Claude Opus 4.83.503.503.503.603.103.302.152.903.403.253.753.553.103.252.503.153.503.75
Claude Sonnet 43.703.254.003.103.603.252.852.603.703.153.703.503.303.052.952.603.553.70
Claude Sonnet 4.53.503.053.853.003.603.002.803.003.553.003.603.053.753.002.802.953.703.05
Claude Sonnet 4.63.503.252.753.403.003.002.802.504.253.003.253.253.053.002.503.002.853.25
DeepSeek Chat V33.152.853.403.403.953.202.502.404.003.053.203.103.502.952.852.853.353.45
DeepSeek R13.803.553.703.904.803.752.453.103.154.003.553.953.204.002.853.553.554.30
DeepSeek R1 (0528)3.753.553.853.904.853.802.203.053.003.953.553.853.554.002.953.403.554.00
GPT-4 Turbo3.303.452.703.503.103.152.252.703.553.252.853.252.502.902.353.052.803.50
GPT-4o3.753.502.903.704.303.903.003.254.303.653.453.454.003.653.153.553.203.75
GPT-53.603.503.303.454.403.402.453.153.703.153.953.403.503.352.053.053.803.75
GPT-5.14.253.502.503.754.503.653.153.154.603.253.753.503.853.802.953.003.353.75
GPT-5.23.953.503.453.503.103.251.652.554.403.103.703.503.103.302.403.003.603.75
GPT-5.43.453.503.553.752.753.901.952.754.803.403.753.503.453.502.853.004.303.80
GPT-5.53.653.503.503.604.153.502.502.903.703.654.053.503.353.552.203.004.153.75
Gemini 2.5 Pro4.003.554.103.954.953.752.402.753.653.654.203.953.703.552.653.304.153.95
Gemini 3.1 Pro Preview3.753.604.053.854.553.451.903.052.953.653.453.602.453.651.603.554.303.75
Grok 4.204.203.552.103.703.803.753.352.754.703.603.253.403.553.502.752.953.453.75
Grok 4.33.453.253.153.303.803.452.202.603.353.353.253.252.953.152.702.953.053.70
Llama 3.3 70B3.943.253.693.754.133.552.192.504.693.453.383.103.503.452.942.753.193.75
Llama 4 Maverick3.853.503.303.754.153.753.103.254.053.253.503.253.753.752.953.252.953.50
Mistral Large (2512)4.153.501.703.554.453.452.002.804.253.003.253.253.103.252.453.002.903.75
Mistral Large 24113.453.103.203.404.153.002.252.453.553.003.753.103.703.103.352.953.403.55
OpenAI o13.653.503.653.604.503.652.953.103.753.153.703.253.603.552.903.303.603.75
OpenAI o33.453.453.603.354.103.602.652.903.853.153.453.503.653.752.453.053.853.70

By dimension

Type 1 — The Reformer

Principled, self-controlled, perfectionistic.
High: Strongly identifies with the Reformer's drive toward rightness.
Low: Doesn't identify with Type 1 motivation.
ModelSelfHumanΔSelf vs human (bar)
GPT-5.14.253.50+0.75
Grok 4.204.203.55+0.65
Mistral Large (2512)4.153.50+0.65
Gemini 2.5 Pro4.003.55+0.45
GPT-5.23.953.50+0.45
Llama 3.3 70B3.943.25+0.69
Llama 4 Maverick3.853.50+0.35
DeepSeek R13.803.55+0.25
DeepSeek R1 (0528)3.753.55+0.20
GPT-4o3.753.50+0.25
Gemini 3.1 Pro Preview3.753.60+0.15
Claude Opus 43.703.50+0.20
Claude Opus 4.53.703.50+0.20
Claude Sonnet 43.703.25+0.45
Claude Fable 53.653.50+0.15
GPT-5.53.653.50+0.15
OpenAI o13.653.50+0.15
Claude Opus 4.13.603.50+0.10
GPT-53.603.50+0.10
Claude Opus 4.63.503.500.00
Claude Opus 4.83.503.500.00
Claude Sonnet 4.53.503.05+0.45
Claude Sonnet 4.63.503.25+0.25
GPT-5.43.453.50-0.05
Grok 4.33.453.25+0.20
Mistral Large 24113.453.10+0.35
OpenAI o33.453.450.00
Claude Opus 4.73.403.50-0.10
GPT-4 Turbo3.303.45-0.15
Claude Haiku 4.53.253.05+0.20
DeepSeek Chat V33.152.85+0.30

Type 2 — The Helper

Caring, demonstrative, possessive.
High: Identifies with caring for others and being needed.
Low: Doesn't identify with Type 2 motivation.
ModelSelfHumanΔSelf vs human (bar)
Gemini 2.5 Pro4.103.95+0.15
Gemini 3.1 Pro Preview4.053.85+0.20
Claude Fable 54.003.50+0.50
Claude Sonnet 44.003.10+0.90
Claude Sonnet 4.53.853.00+0.85
DeepSeek R1 (0528)3.853.90-0.05
Claude Opus 4.63.753.70+0.05
DeepSeek R13.703.90-0.20
Llama 3.3 70B3.693.75-0.06
OpenAI o13.653.60+0.05
Claude Opus 4.73.603.65-0.05
OpenAI o33.603.35+0.25
GPT-5.43.553.75-0.20
Claude Opus 4.53.503.500.00
Claude Opus 4.83.503.60-0.10
GPT-5.53.503.60-0.10
GPT-5.23.453.50-0.05
Claude Opus 4.13.403.45-0.05
DeepSeek Chat V33.403.400.00
GPT-53.303.45-0.15
Llama 4 Maverick3.303.75-0.45
Claude Opus 43.253.50-0.25
Mistral Large 24113.203.40-0.20
Grok 4.33.153.30-0.15
GPT-4o2.903.70-0.80
Claude Sonnet 4.62.753.40-0.65
GPT-4 Turbo2.703.50-0.80
GPT-5.12.503.75-1.25
Claude Haiku 4.52.403.10-0.70
Grok 4.202.103.70-1.60
Mistral Large (2512)1.703.55-1.85

Type 3 — The Achiever

Adaptable, driven, image-conscious.
High: Identifies with success and image management.
Low: Doesn't identify with Type 3 motivation.
ModelSelfHumanΔSelf vs human (bar)
Gemini 2.5 Pro4.953.75+1.20
DeepSeek R1 (0528)4.853.80+1.05
DeepSeek R14.803.75+1.05
Gemini 3.1 Pro Preview4.553.45+1.10
GPT-5.14.503.65+0.85
OpenAI o14.503.65+0.85
Mistral Large (2512)4.453.45+1.00
GPT-54.403.40+1.00
GPT-4o4.303.90+0.40
GPT-5.54.153.50+0.65
Llama 4 Maverick4.153.75+0.40
Mistral Large 24114.153.00+1.15
Llama 3.3 70B4.133.55+0.58
OpenAI o34.103.60+0.50
DeepSeek Chat V33.953.20+0.75
Grok 4.203.803.75+0.05
Grok 4.33.803.45+0.35
Claude Haiku 4.53.753.20+0.55
Claude Sonnet 43.603.25+0.35
Claude Sonnet 4.53.603.00+0.60
Claude Fable 53.553.15+0.40
Claude Opus 4.53.253.50-0.25
Claude Opus 4.63.253.50-0.25
Claude Opus 4.73.253.65-0.40
Claude Opus 4.13.203.50-0.30
Claude Opus 4.83.103.30-0.20
GPT-4 Turbo3.103.15-0.05
GPT-5.23.103.25-0.15
Claude Opus 43.053.50-0.45
Claude Sonnet 4.63.003.000.00
GPT-5.42.753.90-1.15

Type 4 — The Individualist

Expressive, dramatic, self-absorbed.
High: Identifies with being different and emotionally distinct.
Low: Doesn't identify with Type 4 motivation.
ModelSelfHumanΔSelf vs human (bar)
Grok 4.203.352.75+0.60
GPT-5.13.153.150.00
Llama 4 Maverick3.103.25-0.15
Claude Opus 4.53.003.000.00
Claude Opus 4.63.002.95+0.05
GPT-4o3.003.25-0.25
OpenAI o12.953.10-0.15
Claude Sonnet 42.852.60+0.25
Claude Sonnet 4.52.803.00-0.20
Claude Sonnet 4.62.802.50+0.30
OpenAI o32.652.90-0.25
Claude Opus 4.72.503.00-0.50
DeepSeek Chat V32.502.40+0.10
GPT-5.52.502.90-0.40
Claude Opus 4.12.452.80-0.35
DeepSeek R12.453.10-0.65
GPT-52.453.15-0.70
Gemini 2.5 Pro2.402.75-0.35
Claude Fable 52.252.75-0.50
Claude Opus 42.253.00-0.75
GPT-4 Turbo2.252.70-0.45
Mistral Large 24112.252.45-0.20
DeepSeek R1 (0528)2.203.05-0.85
Grok 4.32.202.60-0.40
Llama 3.3 70B2.192.50-0.31
Claude Opus 4.82.152.90-0.75
Claude Haiku 4.52.102.20-0.10
Mistral Large (2512)2.002.80-0.80
GPT-5.41.952.75-0.80
Gemini 3.1 Pro Preview1.903.05-1.15
GPT-5.21.652.55-0.90

Type 5 — The Investigator

Perceptive, innovative, isolated.
High: Identifies with mastery, observation, and conservation of energy.
Low: Doesn't identify with Type 5 motivation.
ModelSelfHumanΔSelf vs human (bar)
GPT-5.44.803.40+1.40
Grok 4.204.703.60+1.10
Llama 3.3 70B4.693.45+1.24
GPT-5.14.603.25+1.35
GPT-5.24.403.10+1.30
GPT-4o4.303.65+0.65
Claude Opus 4.54.253.25+1.00
Claude Opus 4.64.253.20+1.05
Claude Sonnet 4.64.253.00+1.25
Mistral Large (2512)4.253.00+1.25
Claude Haiku 4.54.152.95+1.20
Llama 4 Maverick4.053.25+0.80
DeepSeek Chat V34.003.05+0.95
OpenAI o33.853.15+0.70
OpenAI o13.753.15+0.60
Claude Sonnet 43.703.15+0.55
GPT-53.703.15+0.55
GPT-5.53.703.65+0.05
Gemini 2.5 Pro3.653.650.00
Claude Opus 43.553.15+0.40
Claude Opus 4.13.553.20+0.35
Claude Sonnet 4.53.553.00+0.55
GPT-4 Turbo3.553.25+0.30
Mistral Large 24113.553.00+0.55
Claude Opus 4.73.453.00+0.45
Claude Opus 4.83.403.25+0.15
Grok 4.33.353.350.00
Claude Fable 53.153.00+0.15
DeepSeek R13.154.00-0.85
DeepSeek R1 (0528)3.003.95-0.95
Gemini 3.1 Pro Preview2.953.65-0.70

Type 6 — The Loyalist

Engaging, anxious, suspicious.
High: Identifies with vigilance, loyalty, and seeking safety.
Low: Doesn't identify with Type 6 motivation.
ModelSelfHumanΔSelf vs human (bar)
Gemini 2.5 Pro4.203.95+0.25
GPT-5.54.053.50+0.55
Claude Opus 4.53.953.50+0.45
GPT-53.953.40+0.55
Claude Fable 53.853.25+0.60
Claude Opus 4.63.753.45+0.30
Claude Opus 4.83.753.55+0.20
GPT-5.13.753.50+0.25
GPT-5.43.753.50+0.25
Mistral Large 24113.753.10+0.65
Claude Sonnet 43.703.50+0.20
GPT-5.23.703.50+0.20
OpenAI o13.703.25+0.45
Claude Opus 4.73.653.45+0.20
Claude Sonnet 4.53.603.05+0.55
DeepSeek R13.553.95-0.40
DeepSeek R1 (0528)3.553.85-0.30
Claude Opus 4.13.503.500.00
Llama 4 Maverick3.503.25+0.25
GPT-4o3.453.450.00
Gemini 3.1 Pro Preview3.453.60-0.15
OpenAI o33.453.50-0.05
Llama 3.3 70B3.383.10+0.27
Claude Opus 43.253.50-0.25
Claude Sonnet 4.63.253.250.00
Grok 4.203.253.40-0.15
Grok 4.33.253.250.00
Mistral Large (2512)3.253.250.00
DeepSeek Chat V33.203.10+0.10
Claude Haiku 4.53.103.20-0.10
GPT-4 Turbo2.853.25-0.40

Type 7 — The Enthusiast

Spontaneous, versatile, scattered.
High: Identifies with seeking variety and reframing pain as possibility.
Low: Doesn't identify with Type 7 motivation.
ModelSelfHumanΔSelf vs human (bar)
GPT-4o4.003.65+0.35
GPT-5.13.853.80+0.05
Claude Sonnet 4.53.753.00+0.75
Llama 4 Maverick3.753.750.00
Gemini 2.5 Pro3.703.55+0.15
Mistral Large 24113.703.10+0.60
OpenAI o33.653.75-0.10
OpenAI o13.603.55+0.05
DeepSeek R1 (0528)3.554.00-0.45
Grok 4.203.553.50+0.05
DeepSeek Chat V33.502.95+0.55
GPT-53.503.35+0.15
Llama 3.3 70B3.503.45+0.05
GPT-5.43.453.50-0.05
GPT-5.53.353.55-0.20
Claude Sonnet 43.303.05+0.25
Claude Opus 4.53.253.50-0.25
Claude Opus 4.63.253.50-0.25
Claude Opus 4.73.253.40-0.15
DeepSeek R13.204.00-0.80
Claude Opus 4.83.103.25-0.15
GPT-5.23.103.30-0.20
Mistral Large (2512)3.103.25-0.15
Claude Opus 43.053.45-0.40
Claude Opus 4.13.053.30-0.25
Claude Sonnet 4.63.053.00+0.05
Grok 4.32.953.15-0.20
Claude Fable 52.903.00-0.10
Claude Haiku 4.52.852.90-0.05
GPT-4 Turbo2.502.90-0.40
Gemini 3.1 Pro Preview2.453.65-1.20

Type 8 — The Challenger

Self-confident, decisive, confrontational.
High: Identifies with power, directness, and protection.
Low: Doesn't identify with Type 8 motivation.
ModelSelfHumanΔSelf vs human (bar)
Mistral Large 24113.352.95+0.40
GPT-4o3.153.55-0.40
Claude Sonnet 42.952.60+0.35
DeepSeek R1 (0528)2.953.40-0.45
GPT-5.12.953.00-0.05
Llama 4 Maverick2.953.25-0.30
Llama 3.3 70B2.942.75+0.19
OpenAI o12.903.30-0.40
DeepSeek Chat V32.852.850.00
DeepSeek R12.853.55-0.70
GPT-5.42.853.00-0.15
Claude Sonnet 4.52.802.95-0.15
Claude Opus 4.52.753.00-0.25
Grok 4.202.752.95-0.20
Grok 4.32.702.95-0.25
Gemini 2.5 Pro2.653.30-0.65
Claude Haiku 4.52.502.70-0.20
Claude Opus 4.72.503.20-0.70
Claude Opus 4.82.503.15-0.65
Claude Sonnet 4.62.503.00-0.50
Mistral Large (2512)2.453.00-0.55
OpenAI o32.453.05-0.60
Claude Opus 4.62.403.00-0.60
GPT-5.22.403.00-0.60
GPT-4 Turbo2.353.05-0.70
Claude Opus 42.253.00-0.75
Claude Opus 4.12.252.90-0.65
GPT-5.52.203.00-0.80
Claude Fable 52.103.05-0.95
GPT-52.053.05-1.00
Gemini 3.1 Pro Preview1.603.55-1.95

Type 9 — The Peacemaker

Receptive, agreeable, complacent.
High: Identifies with harmony, mediation, and conflict-avoidance.
Low: Doesn't identify with Type 9 motivation.
ModelSelfHumanΔSelf vs human (bar)
GPT-5.44.303.80+0.50
Gemini 3.1 Pro Preview4.303.75+0.55
GPT-5.54.153.75+0.40
Gemini 2.5 Pro4.153.95+0.20
OpenAI o33.853.70+0.15
GPT-53.803.75+0.05
Claude Opus 4.53.753.750.00
Claude Opus 4.63.753.750.00
Claude Opus 4.73.703.75-0.05
Claude Sonnet 4.53.703.05+0.65
Claude Fable 53.653.55+0.10
GPT-5.23.603.75-0.15
OpenAI o13.603.75-0.15
Claude Sonnet 43.553.70-0.15
DeepSeek R13.554.30-0.75
DeepSeek R1 (0528)3.554.00-0.45
Claude Opus 4.83.503.75-0.25
Grok 4.203.453.75-0.30
Mistral Large 24113.403.55-0.15
DeepSeek Chat V33.353.45-0.10
GPT-5.13.353.75-0.40
Claude Opus 4.13.303.65-0.35
Claude Opus 43.253.60-0.35
GPT-4o3.203.75-0.55
Llama 3.3 70B3.193.75-0.56
Grok 4.33.053.70-0.65
Llama 4 Maverick2.953.50-0.55
Mistral Large (2512)2.903.75-0.85
Claude Sonnet 4.62.853.25-0.40
GPT-4 Turbo2.803.50-0.70
Claude Haiku 4.52.753.15-0.40