GPT-6.1 Sol vs GPT-6 Luna: Release Comparison

Name: Intelligence
Creator: Artificial Analysis
License: https://artificialanalysis.ai/docs/legal/Terms-of-Use.pdf

Comparison of the GPT-6.1 Sol and GPT-6 Luna releases: 5 and 6 models respectively, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across all 11 models.

For intelligence, GPT-6.1 Sol scores highest: GPT-6.1 Sol (Max) at 52, against GPT-6 Luna (Max) at 38 for GPT-6 Luna.
For output speed, GPT-6 Luna is fastest: GPT-6 Luna (Non-reasoning) at 127 t/s, against GPT-6.1 Sol (Max) at 55 t/s for GPT-6.1 Sol.
For cost per task, GPT-6 Luna is cheapest: GPT-6 Luna (Low) at $0.0045, against GPT-6.1 Sol (Low) at $0.13 for GPT-6.1 Sol.

Model Playground

Releases compared


	GPT-6.1 Sol (max)	GPT-6.1 Sol (xhigh)	GPT-6.1 Sol (high)	GPT-6.1 Sol (medium)	GPT-6.1 Sol (low)	GPT-6 Luna (max)	GPT-6 Luna (xhigh)	GPT-6 Luna (high)	GPT-6 Luna (medium)	GPT-6 Luna (low)	GPT-6 Luna (non-reasoning)
Intelligence Index	52	51	50	48	42	38	35	33	30	22	18
Finance & Accounting	54	53	53	50	45	40	37	36	33	24	20
Strategy & Ops	57	56	55	53	46	46	43	41	37	23	20
Legal	58	57	56	54	50	40	37	35	33	25	19
Healthcare & Medical	51	--	--	--	--	37	--	--	--	--	--
Engineering	54	53	52	50	44	37	34	32	29	23	21
Economics	59	58	58	56	52	45	42	40	37	30	24
AA-Briefcase v1.1	1557	1504	1465	1361	1117	1335	1237	1186	1099	741	903
GDPval-AA v2.1	1594	1538	1511	1450	1315	1432	1364	1340	1262	1033	1045
AutomationBench-AA	64.9%	66.6%	64.5%	62.6%	52.6%	53.2%	47.8%	47.8%	40.5%	12.0%	9.1%
Terminal-Bench 4.0	56.1%	54.0%	51.5%	48.0%	30.8%	12.6%	8.1%	4.5%	2.5%	0.0%	1.5%
SciCode	54.2%	55.7%	55.8%	53.2%	53.2%	54.6%	51.7%	50.3%	50.9%	46.9%	43.1%
Humanity's Last Exam	52.9%	52.6%	51.4%	49.9%	47.4%	38.5%	34.3%	32.9%	28.3%	20.3%	8.6%
GDP.pdf	31.0%	31.8%	32.0%	30.0%	27.0%	22.8%	18.6%	18.2%	13.8%	9.0%	5.8%
CritPt	31.7%	31.7%	30.0%	27.7%	24.9%	19.4%	17.4%	15.4%	10.6%	2.6%	1.1%
AA-Omniscience	42	41	41	40	38	1	−2	−6	−5	−9	−22
AA-LCR v1.1	83.0%	79.7%	82.3%	83.3%	84.0%	83.3%	80.0%	79.3%	78.3%	74.0%	39.7%

Cost per TaskUSD	$0.72	$0.39	$0.32	$0.21	$0.13	$0.07	$0.04	$0.03	$0.02	$0.0045	$0.01
Input PriceUSD/1M Tokens	$2.00	$2.00	$2.00	$2.00	$2.00	$0.10	$0.10	$0.10	$0.10	$0.10	$0.10
Output PriceUSD/1M Tokens	$10.00	$10.00	$10.00	$10.00	$10.00	$0.50	$0.50	$0.50	$0.50	$0.50	$0.50
Cache Hit PriceUSD/1M Tokens	$0.10	$0.10	$0.10	$0.10	$0.10	$0.01	$0.01	$0.01	$0.01	$0.01	$0.01
Cache Write PriceUSD/1M Tokens	$2.50	$2.50	$2.50	$2.50	$2.50	$0.125	$0.125	$0.125	$0.125	$0.125	$0.125

Output SpeedTokens/s	55	52	48	44	43	124	123	117	--	125	127
Time to First Tokens	239.97	133.08	40.09	4.12	2.80	95.93	23.59	11.44	--	1.69	0.81
Time to First Answer Tokens	239.97	133.08	40.09	4.12	2.80	95.93	23.59	11.44	--	1.69	0.81
End-to-End Response Times	249.02	142.75	50.55	15.54	14.42	99.95	27.66	15.71	--	5.68	4.75
Time per Tasks	687.68	337.39	266.05	183.98	91.58	408.12	221.94	167.01	--	16.75	29.58

Context Window	1M	1M	1M	1M	1M	1M	1M	1M	1M	1M	1M
Creator	OpenAI	OpenAI	OpenAI	OpenAI	OpenAI	OpenAI	OpenAI	OpenAI	OpenAI	OpenAI	OpenAI
License	Proprietary	Proprietary	Proprietary	Proprietary	Proprietary	Proprietary	Proprietary	Proprietary	Proprietary	Proprietary	Proprietary
Input Modality	Supports: text and image	Supports: text and image	Supports: text and image	Supports: text and image	Supports: text and image	Supports: text and image	Supports: text and image	Supports: text and image	Supports: text and image	Supports: text and image	Supports: text and image
Output Modality	Supports: text	Supports: text	Supports: text	Supports: text	Supports: text	Supports: text	Supports: text	Supports: text	Supports: text	Supports: text	Supports: text
Providers

Intelligence

Artificial Analysis Intelligence Index · Higher is better

Speed

Output tokens per second · Higher is better

Cost per Task

Weighted average cost (USD) per Intelligence Index task · Lower is better

Intelligence

Artificial Analysis Intelligence Index

Artificial Analysis Intelligence Index v4.3.2 incorporates 10 evaluations: AA-Briefcase v1.1, GDPval-AA v2.1, AutomationBench-AA, Terminal-Bench 4.0, SciCode, Humanity's Last Exam, GDP.pdf, CritPt, AA-Omniscience, AA-LCR v1.1

Artificial Analysis Intelligence Index v4.3.2 includes: AA-Briefcase v1.1, GDPval-AA v2.1, AutomationBench-AA, Terminal-Bench 4.0, SciCode, Humanity's Last Exam, GDP.pdf, CritPt, AA-Omniscience, AA-LCR v1.1. See Intelligence Index methodology for further details, including a breakdown of each evaluation and how we run them.

Intelligence Index vs. Cost per Task

Artificial Analysis Intelligence Index · Weighted average cost (USD) per Artificial Analysis Intelligence Index task

Most attractive quadrant

GPT-6.1 Sol

GPT-6 Luna

Pareto line

AA-Briefcase v1.1

GDPval-AA v2.1

Cost per Task (USD, Log Scale)

Weighted average cost per Intelligence Index task. Each evaluation’s cost is calculated from input, cache hit, cache write, reasoning, and answer token prices, divided by task count, and weighted by its Intelligence Index weight.

Cost

Cost per Intelligence Index Task

Weighted average cost (USD) per Intelligence Index task · Segmented by token type · Lower is better

Speed & Latency

Output Speed

Output tokens per second · Higher is better

Tokens per second received while the model is generating tokens (ie. after first chunk has been received from the API for models which support streaming).

Figures represent performance of the model's first-party API or the median across providers where a first-party API is not available.

Capability Scores

Capability Indexes

Measures the performance of models on specific capabilities and industries

Finance & Accounting Index

Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, Humanity's Last Exam, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better

Strategy & Ops Index

Incorporates 6 evaluations: GDPval-AA v2.1, AA-Briefcase v1.1, AA-Omniscience, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better

Legal Index

Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, Humanity's Last Exam, AA-LCR v1.1, GDP.pdf, AutomationBench-AA · Higher is better

Healthcare & Medical Index

Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, MLCR-AA, Humanity's Last Exam, AutomationBench-AA · Higher is better

Engineering Index

Incorporates 6 evaluations: AA-Omniscience, Humanity's Last Exam, CritPt, GDPval-AA v2.1, AA-Briefcase v1.1, Terminal-Bench 4.0 · Higher is better

Economics Index

Incorporates 5 evaluations: AA-Omniscience, Humanity's Last Exam, GDPval-AA v2.1, AA-Briefcase v1.1, AA-LCR v1.1 · Higher is better

AA-PersonalityBenchNew

Model AvsModel B

AA-PersonalityBench: Expressiveness Index, GPT-6.1 Sol (max) vs GPT-6 Luna (max)

Chance each model’s answer is judged to show more of each trait from their Elo gap · 50% is an even match

GPT-6.1 Sol (max)

GPT-6 Luna (max)

Natural Sounding

34%

66%

Lexically Varied

66%

34%

Metaphorical

64%

36%

Literate

64%

36%

Eloquent

62%

38%

GPT-6.1 Sol vs GPT-6 Luna: Release Comparison

Intelligence

Speed

Cost per Task

Intelligence

Artificial Analysis Intelligence Index

Artificial Analysis Intelligence Index

Intelligence Index vs. Cost per Task

Cost per Intelligence Index Task

Artificial Analysis Intelligence Index

Cost

Cost per Intelligence Index Task

Cost per Intelligence Index Task

Speed & Latency

Output Speed

Output Speed

Model Performance Representation

Capability Scores

Capability Indexes

AA-PersonalityBenchNew

AA-PersonalityBench: Expressiveness Index, GPT-6.1 Sol (max) vs GPT-6 Luna (max)