Claude Haiku 5.5 vs Claude Sonnet 5.5: Release Comparison

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

Comparison of the Claude Haiku 5.5 and Claude Sonnet 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 Sonnet 5.5 scores highest: Claude Sonnet 5.5 (Max, Default Fallback) at 54, against Claude Haiku 5.5 (Max) at 36 for Claude Haiku 5.5.
For output speed, Claude Haiku 5.5 is fastest: Claude Haiku 5.5 (Max) at 241 t/s, against Claude Sonnet 5.5 (Max, Default Fallback) at 140 t/s for Claude Sonnet 5.5.
For cost per task, Claude Haiku 5.5 is cheapest: Claude Haiku 5.5 (Low) at $0.04, against Claude Sonnet 5.5 (Low, Default Fallback) at $0.51 for Claude Sonnet 5.5.

Model Playground

Releases compared


	Claude Sonnet 5.5 (max with fallback)	Claude Sonnet 5.5 (xhigh with fallback)	Claude Sonnet 5.5 (high with fallback)	Claude Haiku 5.5 (max)	Claude Haiku 5.5 (xhigh)	Claude Sonnet 5.5 (medium with fallback)	Claude Haiku 5.5 (high)	Claude Sonnet 5.5 (low with fallback)	Claude Haiku 5.5 (medium)	Claude Haiku 5.5 (low)
Intelligence Index	54	50	41	36	34	30	30	25	25	19
Finance & Accounting	56	49	44	44	41	41	38	36	35	29
Strategy & Ops	58	54	51	39	39	47	37	42	33	27
Legal	52	47	44	39	37	39	35	37	33	27
Healthcare & Medical	54	47	44	37	34	40	32	37	31	25
Engineering	58	53	46	42	40	37	36	33	32	27
Economics	56	50	46	44	43	41	39	36	36	30
AA-Briefcase v1.1	1812	1743	1634	1575	1524	1438	1440	1268	1369	1114
AutomationBench-AA	71.8%	65.5%	59.4%	35.4%	36.0%	54.9%	33.7%	49.4%	28.6%	22.9%
Terminal-Bench 4.0	63.6%	57.1%	43.9%	32.8%	29.3%	29.8%	21.7%	20.7%	15.2%	12.6%
FrontierCode 2.0	41.7%	35.6%	25.7%	34.9%	29.9%	11.0%	23.2%	7.1%	16.1%	8.0%
AA-Omniscience v1.1	30	21	19	12	8	19	5	20	4	2
GDP.pdf	25.8%	24.6%	25.2%	20.8%	18.2%	20.2%	17.2%	16.0%	15.2%	11.2%
HLE-Diamond	53.3%	44.1%	33.8%	29.6%	28.8%	23.8%	23.7%	20.6%	16.8%	14.1%
CritPt v2 (Hard Subset)	56.0%	54.0%	47.5%	41.0%	44.5%	28.5%	42.5%	22.5%	30.0%	21.5%
Terminal-Bench-Science 0.1	53.3%	52.4%	34.3%	20.0%	18.1%	16.2%	10.0%	10.5%	7.1%	1.9%

Cost per TaskUSD	$10.02	$4.09	$1.64	$0.41	$0.25	$0.78	$0.16	$0.51	$0.09	$0.04
Input PriceUSD/1M Tokens	$2.00	$2.00	$2.00	$0.10	$0.10	$2.00	$0.10	$2.00	$0.10	$0.10
Output PriceUSD/1M Tokens	$10.00	$10.00	$10.00	$0.50	$0.50	$10.00	$0.50	$10.00	$0.50	$0.50
Cache Hit PriceUSD/1M Tokens	$0.10	$0.10	$0.10	$0.01	$0.01	$0.10	$0.01	$0.10	$0.01	$0.01
Cache Write PriceUSD/1M Tokens	$2.50	$2.50	$2.50	$0.125	$0.125	$2.50	$0.125	$2.50	$0.125	$0.125

Output SpeedTokens/s	140	113	115	241	196	109	187	109	175	185
Time to First Tokens	455.03	28.63	11.08	310.72	67.20	3.02	24.31	1.29	10.36	7.51
Time to First Answer Tokens	455.03	28.63	11.08	310.72	67.20	3.02	24.31	1.29	10.36	7.51
End-to-End Response Times	458.60	33.06	15.42	312.80	69.75	7.62	26.99	5.86	13.21	10.22
Time per Tasks	1,325.71	690.72	331.57	593.47	441.28	177.64	298.26	120.54	192.95	97.99

Context Window	1M	1M	1M	1M	1M	1M	1M	1M	1M	1M
Creator	Anthropic	Anthropic	Anthropic	Anthropic	Anthropic	Anthropic	Anthropic	Anthropic	Anthropic	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

Speed

Output tokens per second · Higher 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 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

Artificial Analysis Intelligence Index v5.0 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

Claude Haiku 5.5

Claude Sonnet 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

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

Benchmarks

AA-PersonalityBenchNew

Model AvsModel B

AA-PersonalityBench: Expressiveness Index, Claude Haiku 5.5 (max) vs Claude Sonnet 5.5 (max with fallback)

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

Claude Haiku 5.5 (max)

Claude Sonnet 5.5 (max with fallback)

Natural Sounding

79%

21%

Metaphorical

36%

64%

Literate

61%

39%

Lexically Varied

57%

43%

Eloquent

51%

49%

Claude Haiku 5.5 vs Claude Sonnet 5.5: Release Comparison

Intelligence

Speed

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

Output Speed

Output Speed

Model Performance Representation

Capability Scores

Capability Indexes

Benchmarks

AA-PersonalityBenchNew

AA-PersonalityBench: Expressiveness Index, Claude Haiku 5.5 (max) vs Claude Sonnet 5.5 (max with fallback)