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#52

DeepSeek V4.1 Flash

DeepSeek Release: 2026-09-10 Tested on: 2026-09-10 12:39 deepseek/deepseek-v4.1-flash::high
748B total (16B active)MoEOpen source
(max) (high) (medium) (low) (none)

Summary

DeepSeek V4.1 Flash scores 8.5 on AI BENCHY and ranks #52. It has 9.6 reliability, a 74.2% pass rate, $0.287 total cost, and 32.78s average response time.

Model facts

Researched on 2026-09-10

Reported
Parameters
748B total (16B active)
Architecture
MoE
Availability
Open source
License
MIT

Total is 552B backbone plus 196B Engram conditional-memory parameters. Active count is 16B during decode; prefill activates 8B per token. The exact checkpoint includes MIT-licensed weights and a runnable inference implementation.

Parameter source Availability source

Score

8.5

Consistency

8.9

Reliability

9.6

Total Cost (Current Price)

$0.287

Total Output Tokens

452,940

Total Input Tokens

100,111

Input Price

$0.150 / 1M

Output Price

$0.600 / 1M

Tests Correct

Wrong Tests: 7

Attempt pass rate: 74.2%

Flaky tests

3

Flaky tests had mixed outcomes across runs (at least one pass and one fail).

Response Time (avg)

32.78s

Response Time (max): 205.53s

Response Time (total): 721.15s

Wrong answer: 5 API error: 1 Did not follow instructions: 1

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#52 DeepSeek V4.1 Flash

high
Cost
$0.035
Time
111.0s
Tokens
29,201 tok

Charts

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Total Output Tokens

Score vs Total Output Tokens

Quick Compare

DeepSeek V4.1 FlashhighvsDeepSeek V4.1 FlashlowDeepSeek V4.1 FlashhighvsDeepSeek V4.1 FlashmediumDeepSeek V4.1 FlashhighvsGPT-5.4mediumDeepSeek V4.1 FlashhighvsGrok 4.5mediumDeepSeek V4.1 FlashhighvsQwen3.8 MaxlowDeepSeek V4.1 FlashhighvsMuse Spark 1.2lowDeepSeek V4.1 FlashhighvsQwen3.6 Max PreviewmediumDeepSeek V4.1 FlashhighvsGrok 4.6mediumDeepSeek V4.1 FlashhighvsClaude Fable 5mediumDeepSeek V4.1 FlashhighvsGrok 4.5low

Category Breakdown

Category Score Consistency Tests Correct
Anti-AI Tricks 8.3 10.0
Coding 10.0 10.0
Combined 10.0 10.0
Data parsing and extraction 6.5 10.0
Domain specific 5.3 7.2
General Intelligence 10.0 10.0
Instructions following 10.0 10.0
Puzzle Solving 6.4 4.9
Tool Calling 10.0 10.0
Trivia 3.0 10.0

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