Gemini 3.8 Flash vs GLM-5.3: Release Comparison

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

Comparison of the Gemini 3.8 Flash and GLM-5.3 releases: 3 and 2 models respectively, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across all 5 models.

For intelligence, GLM-5.3 scores highest: GLM-5.3 (Max) at 32, against Gemini 3.8 Flash (High) at 31 for Gemini 3.8 Flash.
For output speed, Gemini 3.8 Flash is fastest: Gemini 3.8 Flash (High) at 130 t/s, against GLM-5.3 (Max) at 86 t/s for GLM-5.3.
For cost per task, GLM-5.3 is cheapest: GLM-5.3 (Low) at $1.57, against Gemini 3.8 Flash (Medium) at $6.26 for Gemini 3.8 Flash.

Model Playground

Releases compared


	GLM-5.3 (max)	Gemini 3.8 Flash (high)	Gemini 3.8 Flash (medium)	GLM-5.3 (low)	Gemini 3.8 Flash (low)
Intelligence Index	32	31	30	23	23
Finance & Accounting	42	42	42	31	34
Strategy & Ops	47	47	47	38	35
Legal	36	42	42	28	33
Healthcare & Medical	39	38	38	31	31
Engineering	38	39	37	28	31
Economics	39	41	40	30	34
AA-Briefcase v1.1	1503	1203	1183	1185	1061
AutomationBench-AA	62.2%	59.9%	60.9%	52.0%	36.5%
Terminal-Bench 4.0	41.9%	19.7%	19.7%	34.8%	10.1%
FrontierCode 2.0	21.6%	18.7%	16.5%	12.7%	8.1%
AA-Omniscience v1.1	6	23	24	−11	13
GDP.pdf	11.2%	21.0%	22.8%	8.8%	18.6%
HLE-Diamond	17.9%	33.1%	29.1%	17.5%	24.3%
CritPt v2 (Hard Subset)	33.5%	46.5%	45.0%	21.5%	33.5%
Terminal-Bench-Science 0.1	9.5%	10.0%	10.5%	3.8%	8.1%

Cost per TaskUSD	$5.01	$7.77	$6.26	$1.57	--
Input PriceUSD/1M Tokens	$1.40	$0.75	$0.75	$1.40	$0.75
Output PriceUSD/1M Tokens	$4.40	$3.75	$3.75	$4.40	$3.75
Cache Hit PriceUSD/1M Tokens	$0.26	$0.075	$0.075	$0.26	$0.075
Cache Write PriceUSD/1M Tokens	--	$0.75	$0.75	--	$0.75

Output SpeedTokens/s	86	130	--	82	--
Time to First Tokens	1.55	27.20	--	1.68	--
Time to First Answer Tokens	24.90	27.20	--	26.05	--
End-to-End Response Times	30.73	31.05	--	32.15	--
Time per Tasks	1,077.16	754.75	--	624.26	--

Context Window	1M	1M	1M	1M	1M
Creator	Z AI	Google	Google	Z AI	Google
License	Open	Proprietary	Proprietary	Open	Proprietary
Input Modality	Supports: text	Supports: text, image, speech, and video	Supports: text, image, speech, and video	Supports: text	Supports: text, image, speech, and video
Output Modality	Supports: text	Supports: text	Supports: text	Supports: text	Supports: text
Providers	+19			+3

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 v5.0.1 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

Gemini 3.8 Flash

GLM-5.3

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

Output Speed

Output tokens per second · Higher is better

No publicly available API

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, Gemini 3.8 Flash (high) vs GLM-5.3 (max)

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

Gemini 3.8 Flash (high)

GLM-5.3 (max)

Natural Sounding

99%

Lexically Varied

95%

Eloquent

12%

88%

Metaphorical

78%

22%

Literate

43%

57%

Gemini 3.8 Flash vs GLM-5.3: 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, Gemini 3.8 Flash (high) vs GLM-5.3 (max)