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DeepSeek V4.1 Flash vs Grok 4.6

Updated October 21, 2026. 98 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace DeepSeek V4.1 Flash Replace Grok 4.6
DeepSeek V4.1 FlashDeepSeek
Coding
77.2
Overall
24.7
Output $/M
$0.525
63
Grok 4.6xAI
Coding
76.4
Overall
44.3
Output $/M
$6.00
35
vs boards won of 98 shared

Decision reading

DeepSeek V4.1 Flash and Grok 4.6 are level for coding, 77.2 against 76.4 on the Vibe Coding Index, so price and context decide.

Pick Grok 4.6 when what matters is ProgramBench (Vals AI) or IOI (Vals AI), where it leads. Pick DeepSeek V4.1 Flash when output tokens cost 11.4x less, or when the context window is larger, 1.05M against 500K tokens.

Model ADeepSeek V4.1 FlashDeepSeek77.2/1002 independent benchmarksNo cost per solved taskModel BGrok 4.6xAI76.4/1002 independent benchmarks$0.82 per solved task
Shared results
98
DeepSeek V4.1 Flash only
3
Grok 4.6 only
25
Like-for-like categories
8 of 9

Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.

Which one for your work

Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.

At a glance

Coding index
DeepSeek V4.1 Flash 77.2 from 2 benchmarks, Grok 4.6 76.4 from 2 benchmarks.
Widest category
Intelligence, 10.2 points apart on average over 2 shared benchmarks.
Widest single gap
APEX-Agents: DeepSeek V4.1 Flash 39.5% against Grok 4.6 65.3%, 25.8 points apart on a 0 to 100 scale.
Output price
DeepSeek V4.1 Flash $0.525 against Grok 4.6 $6.00 per million output tokens, 11.4x apart.
Context window
DeepSeek V4.1 Flash takes 1.05M tokens, Grok 4.6 500K.

Benchmark by benchmark

First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.

Boards won, where both have a result
CategoryDeepSeek V4.1 FlashBarsGrok 4.6Ties
Coding127
Intelligence02
Agentic work29
Reasoning94
Math42
Knowledge43
Web design72
General256
All shared boards6335
CodingLike-for-likeFour of these boards feed the Vibe Coding Index127
Coding benchmarks for DeepSeek V4.1 Flash and Grok 4.6
BenchmarkDeepSeek V4.1 FlashGrok 4.6Leader
LiveBench coding90.2%89.1%DeepSeek V4.1 Flash
LMArena WebDev16181617DeepSeek V4.1 Flash
AA Coding IndexNot measured76.8Only Grok 4.6 measured
LiveCodeBench (Vals AI)Not measured88.2%Only Grok 4.6 measured
SWE-bench Verified (Vals AI)Not measured95.6%Only Grok 4.6 measured
Terminal-Bench 4 (Vals AI)19.7%17.2%DeepSeek V4.1 Flash
Vibe Code Bench (Vals AI)84.7%76.2%DeepSeek V4.1 Flash
Code migration (Vals AI)45.6%44.6%DeepSeek V4.1 Flash
ProgramBench (Vals AI)0.5%1.0%Grok 4.6
IOI (Vals AI)40.3%47.6%Grok 4.6
Terminal-Bench 2.1 (Vals AI)74.5%78.3%Grok 4.6
SWE-bench Multimodal (Vals AI)46.5%Not measuredOnly DeepSeek V4.1 Flash measured
Vibe Code Bench 1-100 (Vals AI)16.4%14.8%DeepSeek V4.1 Flash
SkillsBench (Vals AI)69.8%55.8%DeepSeek V4.1 Flash
CyberBench (Vals AI)73.7%67.7%DeepSeek V4.1 Flash
SciCode51.9%56.5%Grok 4.6
FrontierCode43.9%48.0%Grok 4.6
FrontierSWENot measured25.3%Only Grok 4.6 measured
WeirdMLNot measured67.3%Only Grok 4.6 measured
ALE-Bench1092.31508.1Grok 4.6
LMArena Text: coding15021466DeepSeek V4.1 Flash
LMArena Text: software and IT14961457DeepSeek V4.1 Flash
LMArena WebDev: React16281631Grok 4.6
LMArena WebDev: HTML16121597DeepSeek V4.1 Flash
LMArena WebDev: from an image16061603DeepSeek V4.1 Flash
Neither model has a result on the other 13 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
Intelligence benchmarks for DeepSeek V4.1 Flash and Grok 4.6
BenchmarkDeepSeek V4.1 FlashGrok 4.6Leader
AA Intelligence Index24.744.3Grok 4.6
Epoch Capabilities Index155.9156.6Grok 4.6
Agentic workLike-for-likePublic boards, shown as published, kept out of the index29
Agentic work benchmarks for DeepSeek V4.1 Flash and Grok 4.6
BenchmarkDeepSeek V4.1 FlashGrok 4.6Leader
AA Agentic IndexNot measured53.0Only Grok 4.6 measured
Design Arena: agents building web appsNot measured1247Only Grok 4.6 measured
Design Arena: agents building full-stack appsNot measured1264Only Grok 4.6 measured
Design Arena: agents building mobile appsNot measured1234Only Grok 4.6 measured
Design Arena: agents building Android appsNot measured1297Only Grok 4.6 measured
Design Arena: agents building Godot gamesNot measured1276Only Grok 4.6 measured
Design Arena: agents building gamesNot measured1208Only Grok 4.6 measured
Design Arena: HTML slidesNot measured1249Only Grok 4.6 measured
Design Arena: PowerPoint slidesNot measured1241Only Grok 4.6 measured
LiveBench research86.8%84.5%DeepSeek V4.1 Flash
LiveBench browser84.0%64.0%DeepSeek V4.1 Flash
LiveBench long agentic40.1%40.7%Grok 4.6
SREBench (Vals AI)0.8%Not measuredOnly DeepSeek V4.1 Flash measured
Finance Agent (Vals AI)53.5%53.7%Grok 4.6
Tax Agent Bench (Vals AI)26.6%33.1%Grok 4.6
Legal Research Bench (Vals AI)41.4%48.1%Grok 4.6
Excel Modeling Benchmark (Vals AI)57.2%62.7%Grok 4.6
BioMysteryBench (Vals AI)67.8%72.2%Grok 4.6
Terminal-Bench-Science (Vals AI)0.0%11.4%Grok 4.6
Vals Science Index29.6%38.1%Grok 4.6
Time Horizon Index (Vals AI)Not measured5.8%Only Grok 4.6 measured
APEX-Agents39.5%65.3%Grok 4.6
Vending-Bench 2Not measured$9,047Only Grok 4.6 measured
Neither model has a result on the other 16 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index94
Reasoning benchmarks for DeepSeek V4.1 Flash and Grok 4.6
BenchmarkDeepSeek V4.1 FlashGrok 4.6Leader
GPQA DiamondNot measured94.7%Only Grok 4.6 measured
LiveBench reasoning86.7%91.2%Grok 4.6
MysteryMechanism (Vals AI)21.2%30.6%Grok 4.6
GPQA Diamond (Artificial Analysis run)Not measured94.9%Only Grok 4.6 measured
Humanity's Last Exam (Artificial Analysis run)39.2%44.1%Grok 4.6
GPQA Diamond (Epoch AI run)89.8%94.0%Grok 4.6
ARC-AGI94.5%87.5%DeepSeek V4.1 Flash
ARC-AGI-272.9%67.1%DeepSeek V4.1 Flash
SimpleBenchNot measured75.9%Only Grok 4.6 measured
Chess puzzles48.0%33.0%DeepSeek V4.1 Flash
Mystery game puzzles43.0%34.0%DeepSeek V4.1 Flash
EBR-benchNot measured30.5%Only Grok 4.6 measured
LMArena Text: hard prompts14831448DeepSeek V4.1 Flash
LMArena Text: expert15011469DeepSeek V4.1 Flash
LMArena Text: hard prompts in English14881445DeepSeek V4.1 Flash
LMArena Vision: diagrams12971285DeepSeek V4.1 Flash
LMArena Vision: homework13071283DeepSeek V4.1 Flash
Neither model has a result on the other 4 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index42
Math benchmarks for DeepSeek V4.1 Flash and Grok 4.6
BenchmarkDeepSeek V4.1 FlashGrok 4.6Leader
OTIS Mock AIME98.3%99.2%Grok 4.6
FrontierMath, tiers 1 to 367.4%66.0%DeepSeek V4.1 Flash
FrontierMath, tier 426.8%31.7%Grok 4.6
ProofBench54.0%51.0%DeepSeek V4.1 Flash
LMArena Text: math14781417DeepSeek V4.1 Flash
LMArena Text: mathematical work14851464DeepSeek V4.1 Flash
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index43
Knowledge benchmarks for DeepSeek V4.1 Flash and Grok 4.6
BenchmarkDeepSeek V4.1 FlashGrok 4.6Leader
MMLU ProNot measured89.4%Only Grok 4.6 measured
LegalBench (Vals AI)83.3%86.3%Grok 4.6
CorpFin (Vals AI)Not measured66.2%Only Grok 4.6 measured
TaxEval (Vals AI)Not measured71.1%Only Grok 4.6 measured
MortgageTax (Vals AI)Not measured64.2%Only Grok 4.6 measured
MedCode (Vals AI)41.2%44.7%Grok 4.6
SimpleQA Verified42.9%49.3%Grok 4.6
LMArena Text: science14691437DeepSeek V4.1 Flash
LMArena Text: medicine and healthcare14841420DeepSeek V4.1 Flash
LMArena Text: legal and government14431429DeepSeek V4.1 Flash
LMArena Text: business and finance14611416DeepSeek V4.1 Flash
Neither model has a result on the other 6 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index72
Web design benchmarks for DeepSeek V4.1 Flash and Grok 4.6
BenchmarkDeepSeek V4.1 FlashGrok 4.6Leader
Design Arena: websites13091289DeepSeek V4.1 Flash
Design Arena: UI components13141294DeepSeek V4.1 Flash
Design Arena: game dev13311296DeepSeek V4.1 Flash
Design Arena: data viz12901283DeepSeek V4.1 Flash
Design Arena: 3D13561277DeepSeek V4.1 Flash
Design Arena: all code categories13201292DeepSeek V4.1 Flash
Design Arena: SVG12431239DeepSeek V4.1 Flash
Design Arena: ASCII art12651278Grok 4.6
LiveBench design79.2%79.8%Grok 4.6
GeneralLike-for-likePublic boards, shown as published, kept out of the index256
General benchmarks for DeepSeek V4.1 Flash and Grok 4.6
BenchmarkDeepSeek V4.1 FlashGrok 4.6Leader
LiveBench data analysis79.3%75.3%DeepSeek V4.1 Flash
Public Benefits Bench (Vals AI)64.3%66.8%Grok 4.6
SAGE (Vals AI)47.9%28.9%DeepSeek V4.1 Flash
MedScribe (Vals AI)85.5%86.5%Grok 4.6
Long context reasoning (AA-LCR)84.0%81.0%DeepSeek V4.1 Flash
DTBench89.9%97.3%Grok 4.6
LMCA47.0%48.5%Grok 4.6
Surface Evolver Bench46.3%Not measuredOnly DeepSeek V4.1 Flash measured
Furniture assembly34.2%40.0%Grok 4.6
LMArena Text14641429DeepSeek V4.1 Flash
LMArena Text: instruction following14731431DeepSeek V4.1 Flash
LMArena Text: creative writing14371426DeepSeek V4.1 Flash
LMArena Vision12781263DeepSeek V4.1 Flash
LMArena Text: English14731433DeepSeek V4.1 Flash
LMArena Text: non-English14491420DeepSeek V4.1 Flash
LMArena Text: Chinese15011476DeepSeek V4.1 Flash
LMArena Text: German14701426DeepSeek V4.1 Flash
LMArena Text: Japanese14321378DeepSeek V4.1 Flash
LMArena Text: Korean14361391DeepSeek V4.1 Flash
LMArena Text: French14651455DeepSeek V4.1 Flash
LMArena Text: Spanish14591414DeepSeek V4.1 Flash
LMArena Text: Russian14671421DeepSeek V4.1 Flash
LMArena Text: Polish14571430DeepSeek V4.1 Flash
LMArena Text: multi-turn14611425DeepSeek V4.1 Flash
LMArena Text: longer queries14731456DeepSeek V4.1 Flash
LMArena Text: writing and language14501429DeepSeek V4.1 Flash
LMArena Text: entertainment and media14451421DeepSeek V4.1 Flash
LMArena Vision: English12881270DeepSeek V4.1 Flash
LMArena Vision: Chinese13271289DeepSeek V4.1 Flash
LMArena Vision: reading text12821272DeepSeek V4.1 Flash
LMArena Vision: humor12601270Grok 4.6
LMArena Vision: creative writing12751262DeepSeek V4.1 Flash
LMArena DocumentNot measured1452Only Grok 4.6 measured
Neither model has a result on the other 13 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for DeepSeek V4.1 Flash and Grok 4.6
BenchmarkDeepSeek V4.1 FlashGrok 4.6Leader
Neither model has a result on 5 boards here

What each workload costs

Three fixed token mixes at each model's listed price, so per-token rates become a bill.

Chat turn

1K input + 500 output tokens

DeepSeek V4.1 Flash$0.0003Fits in one request
Grok 4.6$0.0050Fits in one request

DeepSeek V4.1 Flash costs less

Repository review

50K input + 3K output tokens

DeepSeek V4.1 Flash$0.0040Fits in one request
Grok 4.6$0.118Fits in one request

DeepSeek V4.1 Flash costs less

Agent loop

200K input + 10K output tokens

DeepSeek V4.1 Flash$0.015Fits in one request
Grok 4.6$0.460Fits in one request

DeepSeek V4.1 Flash costs less

Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.

Specification differences

The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.

Specifications of DeepSeek V4.1 Flash and Grok 4.6
SpecificationDeepSeek V4.1 FlashSpaceXAI Grok 4.6
MakerDeepSeekxAI
WeightsOpen weightsNo public weights listed
ReleasedSeptember 10, 2026August 12, 2026
Context window1.05M500K
Input $/Mtok$0.049$2.00
Output $/Mtok$0.525$6.00
Coding index77.276.4
Independent measurements behind it22
Cost per solved taskNot computable$0.82
SourceOpenRouter listingOpenRouter listing

Questions

Is DeepSeek V4.1 Flash better than Grok 4.6 for coding?

DeepSeek V4.1 Flash and Grok 4.6 are level for coding, 77.2 against 76.4 on the Vibe Coding Index, so price and context decide. Pick Grok 4.6 when what matters is ProgramBench (Vals AI) or IOI (Vals AI), where it leads. Pick DeepSeek V4.1 Flash when output tokens cost 11.4x less, or when the context window is larger, 1.05M against 500K tokens.

Which is cheaper, DeepSeek V4.1 Flash or Grok 4.6?

DeepSeek V4.1 Flash costs $0.049 per million input tokens and $0.525 per million output tokens; Grok 4.6 costs $2.00 and $6.00. Cost per solved task is known for Grok 4.6 only.

Which has the bigger context window, DeepSeek V4.1 Flash or Grok 4.6?

DeepSeek V4.1 Flash, with 1.05M tokens against 500K.

How many benchmarks is the DeepSeek V4.1 Flash vs Grok 4.6 comparison based on?

98 benchmarks have a result for both models as of October 21, 2026. DeepSeek V4.1 Flash's coding index rests on 2 independent benchmarks and Grok 4.6's on 2. Where only one model has a result, the page says so instead of naming a winner.

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<p style="font:13px/1.4 sans-serif;margin:6px 0 0">Source: <a href="https://llmbenchmark.ai/compare/deepseek-v4-1-flash-vs-grok-4-6">LLMBenchmark.ai, DeepSeek V4.1 Flash vs Grok 4.6</a></p>