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DeepSeek · released 2026-10-17

DeepSeek V4.1 Flash 1017

Measured on 115 benchmarks across 3 reasoning efforts.

32.6

#21 of 68 models · best at max

Reasoning efforts in this ranking

max32.6#53 of 150
high28.6#74 of 150
none18.5#113 of 150

Strengths

  • DeepSeek V4.1 Flash 1017
  • Gemini 4 Carbon (#1)
  • Field median
bestField medianFrontierCode 2.0-…Terminal-Bench v4…AA-Briefcase v1.1AutomationBench-AATerminal-Bench-Sc…HLE-DiamondCritPt v2 Hard Su…AA-Omniscience v1…AA-Omniscience v1…GDP.pdf
  1. FrontierCode 2.0-AA15%28.5%#15 of 68
  2. Terminal-Bench v4-AA10%33.8%#21 of 68
  3. AA-Briefcase v1.115%1570#15 of 68
  4. AutomationBench-AA5%66.6%#14 of 68
  5. Terminal-Bench-Science-AA15%12.9%#18 of 68
  6. HLE-Diamond10%25.3%#25 of 68
  7. CritPt v2 Hard Subset10%25.0%#42 of 68
  8. AA-Omniscience v1.1 Accuracy10%39.6%#25 of 68
  9. AA-Omniscience v1.1 Non-hallucination5%35.9%#53 of 68
  10. GDP.pdf5%17.2%#31 of 68

Bars show where DeepSeek V4.1 Flash 1017 sits among the 68 ranked models on each benchmark (right is best); the tick is the field median.

Cost and speed

against 68 ranked models

Cost per task

cheapest of 50

freeat max

Time per task

#22 quickest of 49

14 minat max

Output speed

#9 fastest of 60

172 tok/sat max

Time to first token

#8 quickest of 60

1.4sat max

Output tokens per task

#46 fewest of 53

139kat max

Time per task: Artificial Analysis · computed, not timed: output tokens per Intelligence Index task divided by output speed, without tool time. Method changed Nov 4, 2026.

API default effort: high, per Artificial Analysis.

Token price

$0.019 per 1M tokens at API prices

97.0% cache read · 2.50% fresh input · 0.00% cache write · 0.50% output

Assumed mix: no measured T3 Code usage for this model.

This ranking’s benchmarks

10 of 10 measured

agentic

AutomationBench-AA

245 results
  1. #10high of 24568.5%
  2. #18max of 24566.6%
  3. #98none of 24548.8%

Leader: Gemini 4 Carbon · 77.8%

agentic

AA-Briefcase v1.1

250 results
  1. #25max of 2501570
  2. #61none of 2501425
  3. #65high of 2501416

Leader: Sonnet 5.5 · 1813

reasoning

CritPt v2 Hard Subset

116 results
  1. #71high of 11627.5%
  2. #76max of 11625.0%
  3. #109none of 1161.0%

Leader: GPT-6 Astra · 72.0%

coding

FrontierCode 2.0-AA

113 results
  1. #34max of 11328.5%
  2. #66high of 11316.8%
  3. #89none of 1136.1%

Leader: Opus 5.5 · 46.4%

economics

GDP.pdf

243 results
  1. #97max of 24317.2%
  2. #117high of 24314.2%
  3. #188none of 2434.4%

Leader: Muse Wonder Full · 32.6%

reasoning

HLE-Diamond

153 results
  1. #51max of 15325.3%
  2. #66high of 15320.8%
  3. #118none of 1537.1%

Leader: Gemini 4 Carbon · 69.1%

knowledge

AA-Omniscience v1.1 Accuracy

123 results
  1. #59max of 12339.6%
  2. #63high of 12338.9%
  3. #101none of 12321.9%

Leader: Fable 5.1 · 68.4%

knowledge

AA-Omniscience v1.1 Non-hallucination

123 results
  1. #19none of 12374.7%
  2. #78high of 12338.8%
  3. #83max of 12335.9%

Leader: Gemini 4 Carbon · 95.8%

reasoning

Terminal-Bench-Science-AA

126 results
  1. #46max of 12612.9%
  2. #52high of 12610.5%
  3. #86none of 1262.4%

Leader: Gemini 4 Carbon · 64.8%

coding

Terminal-Bench v4-AA

241 results
  1. #46max of 24133.8%
  2. #59high of 24128.8%
  3. #108none of 2419.1%

Leader: Kimi K3.1 · 67.2%

All 115 benchmarks

show 105 more