GPT-6 Luna vs gpt-oss-20b: Release Comparison

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

Comparison of the GPT-6 Luna and gpt-oss-20b releases: 6 and 2 models respectively, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across all 8 models.

For intelligence, GPT-6 Luna scores highest: GPT-6 Luna (Max) at 38, against gpt-oss-20b (Low) at 10 for gpt-oss-20b.
For output speed, gpt-oss-20b is fastest: gpt-oss-20b (Low) at 296 t/s, against GPT-6 Luna (Max) at 134 t/s for GPT-6 Luna.
For cost per task, GPT-6 Luna is cheapest: GPT-6 Luna (Low) at $0.0045, against gpt-oss-20b (High) at $0.01 for gpt-oss-20b.

Model Playground

Releases compared


	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)	gpt-oss-20b (low)	gpt-oss-20b (high)
Intelligence Index	38	35	33	30	22	18	10*	9
Finance & Accounting	40	37	36	33	24	20	--	7
Strategy & Ops	46	43	41	37	23	20	--	5
Legal	40	37	35	33	25	19	--	7
Healthcare & Medical	37	--	--	--	--	--	--	7
Engineering	37	34	32	29	23	21	--	12
Economics	45	42	40	37	30	24	--	11
AA-Briefcase v1.1	1336	1237	1186	1099	741	903	--	0
GDPval-AA v2.1	1430	1364	1340	1262	1033	1045	--	339
AutomationBench-AA	53.2%	47.8%	47.8%	40.5%	12.0%	9.1%	--	0.2%
Terminal-Bench 4.0	12.6%	8.1%	4.5%	2.5%	0.0%	1.5%	--	0.0%
SciCode	54.6%	51.7%	50.3%	50.9%	46.9%	43.1%	--	38.9%
Humanity's Last Exam	38.5%	34.3%	32.9%	28.3%	20.3%	8.6%	5.3%	11.0%
GDP.pdf	22.8%	18.6%	18.2%	13.8%	9.0%	5.8%	--	2.0%
CritPt	19.4%	17.4%	15.4%	10.6%	2.6%	1.1%	0.0%	1.4%
AA-Omniscience	1	−2	−6	−5	−9	−22	−59	−63
AA-LCR v1.1	83.3%	80.0%	79.3%	78.3%	74.0%	39.7%	31.0%	34.7%

Cost per TaskUSD	$0.07	$0.04	$0.03	$0.02	$0.0045	$0.01	--	$0.01
Input PriceUSD/1M Tokens	$0.10	$0.10	$0.10	$0.10	$0.10	$0.10	$0.07	$0.07
Output PriceUSD/1M Tokens	$0.50	$0.50	$0.50	$0.50	$0.50	$0.50	$0.215	$0.18
Cache Hit PriceUSD/1M Tokens	$0.01	$0.01	$0.01	$0.01	$0.01	$0.01	--	--
Cache Write PriceUSD/1M Tokens	$0.125	$0.125	$0.125	$0.125	$0.125	$0.125	--	--

Output SpeedTokens/s	134	126	132	--	129	112	296	223
Time to First Tokens	113.29	41.15	17.73	--	2.52	0.88	0.76	0.75
Time to First Answer Tokens	113.29	41.15	17.73	--	2.52	0.88	7.52	9.70
End-to-End Response Times	117.02	45.13	21.52	--	6.39	5.33	9.21	11.93
Time per Tasks	373.02	220.80	151.37	--	16.84	33.42	--	68.48

Context Window	1M	1M	1M	1M	1M	1M	131k	131k
Creator	OpenAI	OpenAI	OpenAI	OpenAI	OpenAI	OpenAI	OpenAI	OpenAI
License	Proprietary	Proprietary	Proprietary	Proprietary	Proprietary	Proprietary	Open	Open
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	Supports: text
Output Modality	Supports: text	Supports: text	Supports: text	Supports: text	Supports: text	Supports: text	Supports: text	Supports: text
Providers							+2	+3

* Estimated

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

Estimate (independent evaluation forthcoming)

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 Intelligence Index Task

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

Most attractive quadrant

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 Artificial Analysis 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

GPT-6 Luna vs gpt-oss-20b: Release Comparison

Intelligence

Speed

Cost per Task

Intelligence

Artificial Analysis Intelligence Index

Artificial Analysis Intelligence Index

Intelligence Index vs. Cost per Intelligence Index 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