GPT-6.1 Sol vs Claude Opus 5.5: 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 Claude Opus 5.5 releases: 5 and 5 models respectively, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across all 10 models.

For intelligence, Claude Opus 5.5 scores highest: Claude Opus 5.5 (Max, Default Fallback) at 59, against GPT-6.1 Sol (Max) at 55 for GPT-6.1 Sol.
For time per task, GPT-6.1 Sol is fastest: GPT-6.1 Sol (Low) at 1.8 min, against Claude Opus 5.5 (Low, Default Fallback) at 3.1 min for Claude Opus 5.5.
For cost per task, GPT-6.1 Sol is cheapest: GPT-6.1 Sol (Low) at $0.16, against Claude Opus 5.5 (Low, Default Fallback) at $0.98 for Claude Opus 5.5.

Model Playground

Releases compared


	Claude Opus 5.5 (max)	Claude Opus 5.5 (xhigh)	GPT-6.1 Sol (max)	GPT-6.1 Sol (xhigh)	Claude Opus 5.5 (high)	GPT-6.1 Sol (high)	Claude Opus 5.5 (medium)	GPT-6.1 Sol (medium)	GPT-6.1 Sol (low)	Claude Opus 5.5 (low)
Intelligence Index	59	57	55	52	52	50	48	46	35	35
Finance & Accounting	59	56	56	55	53	53	51	51	44	42
Strategy & Ops	61	59	58	57	58	55	56	53	46	48
Legal	58	55	54	54	52	52	50	49	43	43
Healthcare & Medical	58	56	52	51	52	49	51	46	40	45
Engineering	65	63	59	57	58	55	54	52	43	43
Economics	60	58	56	55	55	53	53	50	43	44
AA-Briefcase v1.1	1800	1760	1555	1503	1682	1469	1620	1360	1114	1279
AutomationBench-AA	69.5%	65.0%	64.9%	66.6%	63.2%	64.5%	61.2%	62.6%	52.6%	52.9%
Terminal-Bench 4.0	59.6%	59.6%	56.1%	54.0%	56.6%	51.5%	52.5%	48.0%	30.8%	31.3%
FrontierCode 2.0	46.4%	43.8%	40.6%	38.5%	35.9%	36.7%	33.1%	33.4%	20.2%	15.8%
AA-Omniscience v1.1	48	43	42	42	42	41	40	40	38	39
GDP.pdf	26.2%	26.6%	31.0%	31.8%	28.8%	32.0%	25.6%	30.0%	27.0%	25.6%
HLE-Diamond	67.9%	64.0%	58.8%	55.8%	55.6%	51.9%	51.4%	46.0%	38.2%	41.7%
CritPt v2 (Hard Subset)	68.0%	67.5%	69.5%	69.5%	59.5%	68.5%	54.0%	67.0%	62.5%	36.0%
Terminal-Bench-Science 0.1	59.0%	61.9%	58.1%	50.5%	49.0%	46.2%	43.3%	37.1%	11.0%	24.3%

Cost per TaskUSD	$10.04	$6.05	$1.27	$0.76	$3.46	$0.59	$2.45	$0.36	$0.16	$0.98
Input PriceUSD/1M Tokens	$4.00	$4.00	$2.00	$2.00	$4.00	$2.00	$4.00	$2.00	$2.00	$4.00
Output PriceUSD/1M Tokens	$20.00	$20.00	$10.00	$10.00	$20.00	$10.00	$20.00	$10.00	$10.00	$20.00
Cache Hit PriceUSD/1M Tokens	$0.20	$0.20	$0.10	$0.10	$0.20	$0.10	$0.20	$0.10	$0.10	$0.20
Cache Write PriceUSD/1M Tokens	$5.00	$5.00	$2.50	$2.50	$5.00	$2.50	$5.00	$2.50	$2.50	$5.00

Time per TaskMinutes	25.4	16.3	19.9	9.2	9.6	6.5	7.2	3.8	1.8	3.1
Output Speedtok/s	114	106	57	55	104	58	102	60	55	104
Time to First Answer Tokens	415.35	93.90	176.93	70.31	31.89	36.93	14.82	4.36	2.46	6.47
Time to First Tokens	415.35	93.90	176.93	70.31	31.89	36.93	14.82	4.36	2.46	6.47
End-to-End TimeMean of Single-Request Workloads (s)	836.23	247.90	413.89	206.95	124.10	142.10	81.44	68.57	61.16	53.69

Context Window	1M	1M	1M	1M	1M	1M	1M	1M	1M	1M
Creator	Anthropic	Anthropic	OpenAI	OpenAI	Anthropic	OpenAI	Anthropic	OpenAI	OpenAI	Anthropic
License	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
Output Modality	Supports: text	Supports: text	Supports: text	Supports: text	Supports: text	Supports: text	Supports: text	Supports: text	Supports: text	Supports: text
Providers

Updated

Intelligence

Artificial Analysis Intelligence Index · Higher is better

Time per Task

Inference time (minutes) per Intelligence Index task · Lower is better

Cost per Task

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

IntelligenceUpdated

Artificial Analysis Intelligence Index

Artificial Analysis Intelligence Index v5.0.1 incorporates 9 evaluations: AA-Briefcase v1.1, AutomationBench-AA, Terminal-Bench 4.0, FrontierCode 2.0, AA-Omniscience v1.1, GDP.pdf, HLE-Diamond, CritPt v2 (Hard Subset), and Terminal-Bench-Science 0.1

No publicly available API

Artificial Analysis Intelligence Index v5.0.1 includes: AA-Briefcase v1.1, AutomationBench-AA, Terminal-Bench 4.0, FrontierCode 2.0, AA-Omniscience v1.1, GDP.pdf, HLE-Diamond, CritPt v2 (Hard Subset), Terminal-Bench-Science 0.1. 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

Claude Opus 5.5

Pareto line

AA-Briefcase v1.1

AutomationBench-AA

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

No publicly available API

Speed & Latency

Time per Intelligence Index Task

Output tokens divided by end-to-end output speed (minutes per Intelligence Index task) · Speed at the model's own endpoint or the median across providers · Lower is better

No publicly available API

The weighted average time (minutes) per Artificial Analysis Intelligence Index task: output tokens per task divided by output speed, weighted by each benchmark's weight in the Intelligence Index.

Speed and latency metrics average each endpoint's runs over the past 5 days, and the error rate pools them. We run the benchmark every 6 hours, and endpoints of deprecated models every 18 hours.

Capability Scores

Capability Indexes

Measures the performance of models on specific capabilities and industries

Finance & Accounting Index

Incorporates 5 evaluations: AA-Briefcase v1.1, AA-Omniscience v1.1, HLE-Diamond, AutomationBench-AA, GDP.pdf · Higher is better

Strategy & Ops Index

Incorporates 4 evaluations: AutomationBench-AA, AA-Briefcase v1.1, AA-Omniscience v1.1, GDP.pdf · Higher is better

Legal Index

Incorporates 5 evaluations: AA-Omniscience v1.1, AA-Briefcase v1.1, HLE-Diamond, GDP.pdf, AutomationBench-AA · Higher is better

Healthcare & Medical Index

Incorporates 5 evaluations: AA-Omniscience v1.1, AA-Briefcase v1.1, MLCR-AA, AutomationBench-AA, HLE-Diamond · Higher is better

Engineering Index

Incorporates 7 evaluations: AA-Omniscience v1.1, CritPt v2 (Hard Subset), Terminal-Bench-Science 0.1, HLE-Diamond, Terminal-Bench 4.0, FrontierCode 2.0, AA-Briefcase v1.1 · Higher is better

Economics Index

Incorporates 4 evaluations: AA-Omniscience v1.1, AA-Briefcase v1.1, HLE-Diamond, GDP.pdf · Higher is better

Benchmarks

AA-PersonalityBenchNew

Model AvsModel B

AA-PersonalityBench: Expressiveness Index, GPT-6.1 Sol (max) vs Claude Opus 5.5 (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)

Claude Opus 5.5 (max)

Lexically Varied

98%

Metaphorical

94%

Eloquent

16%

84%

Natural Sounding

39%

61%

Literate

42%

58%

GPT-6.1 Sol vs Claude Opus 5.5: Release Comparison

Intelligence

Time per Task

Cost per Task

IntelligenceUpdated

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

Time per Intelligence Index Task

Time per Intelligence Index Task

Time Period

Capability Scores

Capability Indexes

Benchmarks

AA-PersonalityBenchNew

AA-PersonalityBench: Expressiveness Index, GPT-6.1 Sol (max) vs Claude Opus 5.5 (max)