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 45, against Gemini 3.8 Flash (High) at 41 for Gemini 3.8 Flash.
For output speed, Gemini 3.8 Flash is fastest: Gemini 3.8 Flash (High) at 139 t/s, against GLM-5.3 (Low) at 67 t/s for GLM-5.3.
For cost per task, GLM-5.3 is cheapest: GLM-5.3 (Low) at $0.85, against Gemini 3.8 Flash (Medium) at $0.93 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	45	41	40	34	33
Finance & Accounting	45	47	45	35	39
Strategy & Ops	48	48	48	39	39
Legal	42	52	51	33	45
Healthcare & Medical	47	42	--	--	--
Engineering	47	43	40	38	34
Economics	51	52	50	41	46
AA-Briefcase v1.1	1508	1203	1182	1187	1062
GDPval-AA v2.1	1650	1436	1421	1322	1307
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%
SciCode	59.0%	56.6%	55.1%	42.0%	55.0%
Humanity's Last Exam	42.3%	47.8%	42.1%	36.6%	37.1%
GDP.pdf	11.2%	21.0%	22.8%	8.8%	18.6%
CritPt	19.1%	18.3%	12.3%	14.6%	4.0%
AA-Omniscience	14	30	29	−8	21
AA-LCR v1.1	79.7%	81.3%	84.0%	72.7%	80.7%

Cost per TaskUSD	$2.01	$1.24	$0.93	$0.85	--
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	58	139	--	67	--
Time to First Tokens	3.46	24.48	--	3.28	--
Time to First Answer Tokens	37.84	24.48	--	33.31	--
End-to-End Response Times	46.44	28.08	--	40.82	--
Time per Tasks	775.59	507.00	--	445.34	--

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	+18

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 Intelligence Index 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

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

Gemini 3.8 Flash vs GLM-5.3: 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