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#36

DeepSeek V4.1 Flash 1017

DeepSeek Release: 2026-10-18 Tested on: 2026-10-18 00:10 deepseek/deepseek-v4.1-flash-1017::low
~748B total (~16B active)MoEOpen sourceEstimated
(max) (high) (low) (none)

Summary

DeepSeek V4.1 Flash 1017 scores 9.2 on AI BENCHY and ranks #36. It has 10.0 reliability, a 78.3% pass rate, $0.355 total cost, and 32.55s average response time.

What makes DeepSeek V4.1 Flash 1017 unique: Its total benchmark cost is unusually low for its score range.

Model facts

Researched on 2026-10-18

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

Best estimate from public evidence; the vendor did not disclose every value. The exact 1017 checkpoint publishes MIT weights, prompt encoding and runnable inference code. Its card describes a minor update to V4.1 Flash and links the family technical report. Size estimates use the family 552B backbone plus 196B Engram memory and 16B active decode (8B prefill), supported by the exact checkpoint MoE/Engram configuration; the 1017 card does not separately restate counts. General multimodal LLM, not a vision specialist. OpenRouter declares none, low, high and max reasoning modes. Seven current providers publish no-training endpoint policies; routing uses existing OpenRouter account guardrails as requested. Fallback release date is the onboarding request date.

Parameter source 1 Parameter source 2 Parameter source 3 Availability source

Score

9.2

Consistency

9.0

Reliability

10.0

Total Cost (Current Price)

$0.355

Total Output Tokens

523,482

Total Input Tokens

267,122

Input Price

$0.150 / 1M

Output Price

$0.600 / 1M

Cache Read Price

$0.003 / 1M

Cache Write Price

N/A

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Tests Correct

Wrong Tests: 7

Attempt pass rate: 78.3%

Flaky tests

3

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

Response Time (avg)

32.55s

Response Time (max): 443.63s

Response Time (total): 748.62s

Wrong answer: 5 Did not follow instructions: 1 No answer: 1

Hamster playing table tennis

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

#36 DeepSeek V4.1 Flash 1017

low
Cost
$0.006
Time
63.8s
Tokens
11,236 tok

Charts

Choose the first model, then click a second model to open a side-by-side page.

Total Output Tokens

Score vs Total Output Tokens

Quick Compare

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Category Breakdown

Category Score Consistency Tests Correct
Agentic 10.0 10.0
Anti-AI Tricks 8.3 10.0
Coding 10.0 10.0
Combined 10.0 10.0
Data parsing and extraction 10.0 10.0
Domain specific 3.6 7.2
General Intelligence 10.0 10.0
Instructions following 10.0 10.0
Puzzle Solving 6.9 4.9
Tool Calling 10.0 10.0
Trivia 3.0 10.0

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