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DeepSeek V4.1 Flash vs JT-4.1 Flash 236B A21B: Release Comparison

Comparison of the DeepSeek V4.1 Flash and JT-4.1 Flash 236B A21B releases: 2 and 2 models respectively, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across all 4 models.

  • For intelligence, DeepSeek V4.1 Flash scores highest: DeepSeek V4.1 Flash (Reasoning, Max Effort) at 39, against JT-4.1 Flash 236B A21B at 34 for JT-4.1 Flash 236B A21B.
Model Playground

Releases compared

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)

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
DeepSeek V4.1 Flash
Pareto line

Cost per Task (USD, Log Scale)

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

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: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, 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

Further details

Input modality
Output modality
Weights
Provider Benchmarks
DeepSeek V4.1 Flash (Reasoning, Max Effort)
DeepSeek logoDeepSeek
39
45
52
41
41
39
44
$0.27
$0.2
$0.30
$1.20
$0.006
$477
89k
63k
253M
209
0.94s
10.49s
12.88s
319.01s
552B
16B active at inference time
1M
Sep 2026
-
Yes

Supports: text and image

Supports: text

NebiusLithosAICoreWeave
+16
JT-4.1 Flash 236B A21B
China Mobile logoChina Mobile
34
40
41
44
-
36
47
-
-
-
-
-
-
86k
54k
185M
-
-
-
-
-
236B
21B active at inference time
262k
Jul 2026
-
Yes

Supports: text

Supports: text

Not available
-
-
JT-4.1 Flash 236B A21B (non-reasoning)
China Mobile logoChina Mobile
27
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
236B
21B active at inference time
256k
Jul 2026
-
No

Supports: text and image

Supports: text

Not available
-
-
DeepSeek V4.1 Flash (Non-Reasoning)
DeepSeek logoDeepSeek
25
30
36
30
-
25
32
$0.15
$0.2
$0.30
$1.20
$0.006
$156
34k
0
45M
207
0.99s
0.99s
3.41s
164.16s
552B
16B active at inference time
1M
Sep 2026
-
No

Supports: text and image

Supports: text

DeepSeekModalLithosAICoreWeave