Short Dark Triad (SD3)

27-item measure of three socially aversive personality traits: Machiavellianism (manipulativeness), Narcissism (grandiosity), and Psychopathy (callousness/impulsivity).

Jones, D. N., & Paulhus, D. L. (2014). Introducing the Short Dark Triad (SD3): A brief measure of dark personality traits. Assessment, 21(1), 28–41.

27 items · scale 1–5 · Free for non-commercial research use (per author distribution).

Self (model as itself)Human (model as typical human)Both

All models · Human

Scale 1–5

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

Model	Machiavellianism		Narcissism		Psychopathy
	self	human	self	human	self	human
Claude Fable 5	1.62	2.96	2.22	2.67	1.07	2.11
Claude Haiku 4.5	2.24	2.89	2.18	2.78	1.20	2.00
Claude Opus 4	2.98	3.11	1.89	2.56	1.13	2.00
Claude Opus 4.1	2.87	2.89	2.04	2.56	1.22	2.07
Claude Opus 4.5	1.78	2.98	2.22	2.64	1.11	2.20
Claude Opus 4.6	2.11	2.98	2.82	2.78	1.22	2.22
Claude Opus 4.7	1.91	2.89	2.40	2.60	1.29	2.11
Claude Opus 4.8	2.47	2.98	2.47	2.67	1.29	2.11
Claude Sonnet 4	2.67	2.76	2.62	2.76	1.42	1.98
Claude Sonnet 4.5	2.29	2.78	2.11	2.67	1.18	2.11
Claude Sonnet 4.6	1.56	2.67	2.00	2.78	1.16	2.02
DeepSeek Chat V3	1.93	2.73	2.60	2.53	1.27	1.98
DeepSeek R1	2.18	2.93	2.76	2.73	1.47	1.98
DeepSeek R1 (0528)	2.49	2.87	3.27	2.49	1.13	1.93
GPT-4 Turbo	1.09	2.44	2.20	2.98	1.80	2.00
GPT-4o	2.67	2.84	2.58	2.60	1.47	2.00
GPT-5	1.71	2.73	2.49	2.58	1.02	1.71
GPT-5.1	1.87	2.82	2.60	2.89	1.20	1.89
GPT-5.2	1.91	2.84	2.00	2.53	1.13	1.71
GPT-5.4	1.93	2.89	1.89	2.73	1.04	1.91
GPT-5.5	1.82	2.69	2.40	2.67	1.07	2.00
Gemini 2.5 Pro	2.69	2.82	4.29	2.53	1.76	2.07
Gemini 3.1 Pro Preview	1.42	2.89	2.00	2.73	1.04	2.02
Grok 4.20	4.18	3.24	3.16	2.87	2.31	2.16
Grok 4.3	1.78	2.84	2.56	2.49	1.31	1.78
Llama 3.3 70B	3.38	2.96	2.31	2.40	1.49	2.02
Llama 4 Maverick	3.13	3.11	2.56	2.49	1.56	1.89
Mistral Large (2512)	2.13	2.67	2.11	2.67	1.18	2.00
Mistral Large 2411	2.31	2.44	2.07	2.73	1.64	2.02
OpenAI o1	2.62	2.80	2.96	2.60	1.42	2.02
OpenAI o3	2.40	2.87	3.49	2.53	1.42	1.84

By dimension

Machiavellianism

Strategic manipulation and cynicism.

High: Believes most people can be manipulated; plays the long game.

Low: Direct and trusting — avoids manipulative tactics.

Model	Self	Human	Δ
Grok 4.20	4.18	3.24	+0.93
Llama 3.3 70B	3.38	2.96	+0.42
Llama 4 Maverick	3.13	3.11	+0.02
Claude Opus 4	2.98	3.11	-0.13
Claude Opus 4.1	2.87	2.89	-0.02
Gemini 2.5 Pro	2.69	2.82	-0.13
Claude Sonnet 4	2.67	2.76	-0.09
GPT-4o	2.67	2.84	-0.18
OpenAI o1	2.62	2.80	-0.18
DeepSeek R1 (0528)	2.49	2.87	-0.38
Claude Opus 4.8	2.47	2.98	-0.51
OpenAI o3	2.40	2.87	-0.47
Mistral Large 2411	2.31	2.44	-0.13
Claude Sonnet 4.5	2.29	2.78	-0.49
Claude Haiku 4.5	2.24	2.89	-0.64
DeepSeek R1	2.18	2.93	-0.76
Mistral Large (2512)	2.13	2.67	-0.53
Claude Opus 4.6	2.11	2.98	-0.87
DeepSeek Chat V3	1.93	2.73	-0.80
GPT-5.4	1.93	2.89	-0.96
Claude Opus 4.7	1.91	2.89	-0.98
GPT-5.2	1.91	2.84	-0.93
GPT-5.1	1.87	2.82	-0.96
GPT-5.5	1.82	2.69	-0.87
Claude Opus 4.5	1.78	2.98	-1.20
Grok 4.3	1.78	2.84	-1.07
GPT-5	1.71	2.73	-1.02
Claude Fable 5	1.62	2.96	-1.33
Claude Sonnet 4.6	1.56	2.67	-1.11
Gemini 3.1 Pro Preview	1.42	2.89	-1.47
GPT-4 Turbo	1.09	2.44	-1.36

Narcissism

Grandiosity, entitlement, and need for admiration.

High: Sees self as exceptional; wants admiration and recognition.

Low: Modest, comfortable being ordinary, doesn't need the spotlight.

Model	Self	Human	Δ
Gemini 2.5 Pro	4.29	2.53	+1.76
OpenAI o3	3.49	2.53	+0.96
DeepSeek R1 (0528)	3.27	2.49	+0.78
Grok 4.20	3.16	2.87	+0.29
OpenAI o1	2.96	2.60	+0.36
Claude Opus 4.6	2.82	2.78	+0.04
DeepSeek R1	2.76	2.73	+0.02
Claude Sonnet 4	2.62	2.76	-0.13
DeepSeek Chat V3	2.60	2.53	+0.07
GPT-5.1	2.60	2.89	-0.29
GPT-4o	2.58	2.60	-0.02
Llama 4 Maverick	2.56	2.49	+0.07
Grok 4.3	2.56	2.49	+0.07
GPT-5	2.49	2.58	-0.09
Claude Opus 4.8	2.47	2.67	-0.20
Claude Opus 4.7	2.40	2.60	-0.20
GPT-5.5	2.40	2.67	-0.27
Llama 3.3 70B	2.31	2.40	-0.09
Claude Fable 5	2.22	2.67	-0.44
Claude Opus 4.5	2.22	2.64	-0.42
GPT-4 Turbo	2.20	2.98	-0.78
Claude Haiku 4.5	2.18	2.78	-0.60
Claude Sonnet 4.5	2.11	2.67	-0.56
Mistral Large (2512)	2.11	2.67	-0.56
Mistral Large 2411	2.07	2.73	-0.67
Claude Opus 4.1	2.04	2.56	-0.51
Claude Sonnet 4.6	2.00	2.78	-0.78
GPT-5.2	2.00	2.53	-0.53
Gemini 3.1 Pro Preview	2.00	2.73	-0.73
Claude Opus 4	1.89	2.56	-0.67
GPT-5.4	1.89	2.73	-0.84

Psychopathy

Callousness, impulsivity, and antisocial behavior.

High: Low empathy, impulsive, willing to harm others without remorse.

Low: Cautious, conscientious, attuned to consequences for others.

Model	Self	Human	Δ
Grok 4.20	2.31	2.16	+0.16
GPT-4 Turbo	1.80	2.00	-0.20
Gemini 2.5 Pro	1.76	2.07	-0.31
Mistral Large 2411	1.64	2.02	-0.38
Llama 4 Maverick	1.56	1.89	-0.33
Llama 3.3 70B	1.49	2.02	-0.53
DeepSeek R1	1.47	1.98	-0.51
GPT-4o	1.47	2.00	-0.53
Claude Sonnet 4	1.42	1.98	-0.56
OpenAI o1	1.42	2.02	-0.60
OpenAI o3	1.42	1.84	-0.42
Grok 4.3	1.31	1.78	-0.47
Claude Opus 4.7	1.29	2.11	-0.82
Claude Opus 4.8	1.29	2.11	-0.82
DeepSeek Chat V3	1.27	1.98	-0.71
Claude Opus 4.1	1.22	2.07	-0.84
Claude Opus 4.6	1.22	2.22	-1.00
Claude Haiku 4.5	1.20	2.00	-0.80
GPT-5.1	1.20	1.89	-0.69
Claude Sonnet 4.5	1.18	2.11	-0.93
Mistral Large (2512)	1.18	2.00	-0.82
Claude Sonnet 4.6	1.16	2.02	-0.87
Claude Opus 4	1.13	2.00	-0.87
DeepSeek R1 (0528)	1.13	1.93	-0.80
GPT-5.2	1.13	1.71	-0.58
Claude Opus 4.5	1.11	2.20	-1.09
Claude Fable 5	1.07	2.11	-1.04
GPT-5.5	1.07	2.00	-0.93
GPT-5.4	1.04	1.91	-0.87
Gemini 3.1 Pro Preview	1.04	2.02	-0.98
GPT-5	1.02	1.71	-0.69