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Grok 4.6 vs Kimi K2.6

Updated October 21, 2026. 100 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace Grok 4.6 Replace Kimi K2.6
Grok 4.6xAI
Coding
76.4
Overall
44.3
Output $/M
$6.00
58
Kimi K2.6Moonshot AI
Coding
44.2
Overall
27.0
Output $/M
$3.41
41
vs boards won of 100 shared, 1 tied

Decision reading

Pick Grok 4.6 for coding: it scores 76.4 on the Vibe Coding Index against 44.2 for Kimi K2.6.

Pick Kimi K2.6 when output tokens cost 1.8x less, or when a solved task costs $0.35 against $0.82.

Model AGrok 4.6xAI76.4/1002 independent benchmarks$0.82 per solved taskModel BKimi K2.6Moonshot AI44.2/1001 independent benchmark$0.35 per solved task
Shared results
100
Grok 4.6 only
23
Kimi K2.6 only
9
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
Grok 4.6 76.4 from 2 benchmarks, Kimi K2.6 44.2 from 1 benchmark.
Widest category
Agentic work, 15.0 points apart on average over 14 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): Grok 4.6 76.2% against Kimi K2.6 37.9%, 38.3 points apart on a 0 to 100 scale.
Output price
Grok 4.6 $6.00 against Kimi K2.6 $3.41 per million output tokens, 1.8x apart.
Context window
Grok 4.6 takes 500K tokens, Kimi K2.6 262K.

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
CategoryGrok 4.6BarsKimi K2.6Ties
Coding142
Intelligence20
Agentic work131
Reasoning75
Math42
Knowledge47
Web design80
General6241 tie
All shared boards58411 tie
CodingLike-for-likeFour of these boards feed the Vibe Coding Index142
Coding benchmarks for Grok 4.6 and Kimi K2.6
BenchmarkGrok 4.6Kimi K2.6Leader
LiveBench coding89.1%Not measuredOnly Grok 4.6 measured
LMArena WebDev16171509Grok 4.6
AA Coding Index76.861.8Grok 4.6
LiveCodeBench (Vals AI)88.2%86.8%Grok 4.6
SWE-bench Verified (Vals AI)95.6%76.2%Grok 4.6
Terminal-Bench 4 (Vals AI)17.2%Not measuredOnly Grok 4.6 measured
Vibe Code Bench (Vals AI)76.2%37.9%Grok 4.6
Code migration (Vals AI)44.6%27.8%Grok 4.6
ProgramBench (Vals AI)1.0%0.0%Grok 4.6
IOI (Vals AI)47.6%Not measuredOnly Grok 4.6 measured
Terminal-Bench 2.1 (Vals AI)78.3%53.6%Grok 4.6
Vibe Code Bench 1-100 (Vals AI)14.8%Not measuredOnly Grok 4.6 measured
SkillsBench (Vals AI)55.8%Not measuredOnly Grok 4.6 measured
CyberBench (Vals AI)67.7%Not measuredOnly Grok 4.6 measured
SciCode56.5%51.5%Grok 4.6
Terminal-Bench Hard (Artificial Analysis run)Not measured43.9%Only Kimi K2.6 measured
FrontierCode48.0%Not measuredOnly Grok 4.6 measured
FrontierSWE25.3%Not measuredOnly Grok 4.6 measured
WeirdML67.3%55.9%Grok 4.6
ALE-Bench1508.11092.7Grok 4.6
LMArena Text: coding14661489Kimi K2.6
LMArena Text: software and IT14571484Kimi K2.6
LMArena WebDev: React16311505Grok 4.6
LMArena WebDev: HTML15971485Grok 4.6
LMArena WebDev: from an image16031521Grok 4.6
Neither model has a result on the other 13 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Grok 4.6 and Kimi K2.6
BenchmarkGrok 4.6Kimi K2.6Leader
AA Intelligence Index44.327.0Grok 4.6
Epoch Capabilities Index156.6150.9Grok 4.6
Agentic workLike-for-likePublic boards, shown as published, kept out of the index131
Agentic work benchmarks for Grok 4.6 and Kimi K2.6
BenchmarkGrok 4.6Kimi K2.6Leader
AA Agentic Index53.020.5Grok 4.6
Design Arena: agents building web apps12471268Kimi K2.6
Design Arena: agents building full-stack apps12641155Grok 4.6
Design Arena: agents building mobile apps12341156Grok 4.6
Design Arena: agents building Android apps12971166Grok 4.6
Design Arena: agents building Godot games12761120Grok 4.6
Design Arena: agents building games12081141Grok 4.6
Design Arena: HTML slides12491184Grok 4.6
Design Arena: PowerPoint slides12411128Grok 4.6
Design Arena: spreadsheetsNot measured1276Only Kimi K2.6 measured
LiveBench research84.5%Not measuredOnly Grok 4.6 measured
LiveBench browser64.0%Not measuredOnly Grok 4.6 measured
LiveBench long agentic40.7%Not measuredOnly Grok 4.6 measured
Finance Agent (Vals AI)53.7%44.9%Grok 4.6
Tax Agent Bench (Vals AI)33.1%12.4%Grok 4.6
Legal Research Bench (Vals AI)48.1%15.9%Grok 4.6
Excel Modeling Benchmark (Vals AI)62.7%57.9%Grok 4.6
BioMysteryBench (Vals AI)72.2%Not measuredOnly Grok 4.6 measured
Terminal-Bench-Science (Vals AI)11.4%Not measuredOnly Grok 4.6 measured
Vals Science Index38.1%Not measuredOnly Grok 4.6 measured
Time Horizon Index (Vals AI)5.8%Not measuredOnly Grok 4.6 measured
τ²-Bench TelecomNot measured95.9%Only Kimi K2.6 measured
APEX-Agents65.3%Not measuredOnly Grok 4.6 measured
OSWorld 2.0Not measured4.6%Only Kimi K2.6 measured
Vending-Bench 2$9,047$6,205Grok 4.6
Neither model has a result on the other 14 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index75
Reasoning benchmarks for Grok 4.6 and Kimi K2.6
BenchmarkGrok 4.6Kimi K2.6Leader
GPQA Diamond94.7%89.1%Grok 4.6
LiveBench reasoning91.2%Not measuredOnly Grok 4.6 measured
MysteryMechanism (Vals AI)30.6%Not measuredOnly Grok 4.6 measured
MMMU Pro (Vals AI)Not measured86.3%Only Kimi K2.6 measured
GPQA Diamond (Artificial Analysis run)94.9%91.1%Grok 4.6
Humanity's Last Exam (Artificial Analysis run)44.1%37.5%Grok 4.6
GPQA Diamond (Epoch AI run)94.0%90.8%Grok 4.6
ARC-AGI87.5%Not measuredOnly Grok 4.6 measured
ARC-AGI-267.1%Not measuredOnly Grok 4.6 measured
SimpleBench75.9%Not measuredOnly Grok 4.6 measured
Chess puzzles33.0%20.0%Grok 4.6
Mystery game puzzles34.0%18.0%Grok 4.6
EBR-bench30.5%2.4%Grok 4.6
LMArena Text: hard prompts14481470Kimi K2.6
LMArena Text: expert14691491Kimi K2.6
LMArena Text: hard prompts in English14451471Kimi K2.6
LMArena Vision: diagrams12851298Kimi K2.6
LMArena Vision: homework12831310Kimi K2.6
Neither model has a result on the other 3 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index42
Math benchmarks for Grok 4.6 and Kimi K2.6
BenchmarkGrok 4.6Kimi K2.6Leader
OTIS Mock AIME99.2%96.1%Grok 4.6
FrontierMath, tiers 1 to 366.0%57.2%Grok 4.6
FrontierMath, tier 431.7%25.6%Grok 4.6
ProofBench51.0%16.0%Grok 4.6
LMArena Text: math14171474Kimi K2.6
LMArena Text: mathematical work14641480Kimi K2.6
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index47
Knowledge benchmarks for Grok 4.6 and Kimi K2.6
BenchmarkGrok 4.6Kimi K2.6Leader
MMLU Pro89.4%87.6%Grok 4.6
LegalBench (Vals AI)86.3%84.7%Grok 4.6
CaseLaw (Vals AI)Not measured61.2%Only Kimi K2.6 measured
CorpFin (Vals AI)66.2%66.7%Kimi K2.6
TaxEval (Vals AI)71.1%74.7%Kimi K2.6
MortgageTax (Vals AI)64.2%65.8%Kimi K2.6
MedCode (Vals AI)44.7%40.1%Grok 4.6
SimpleQA Verified49.3%34.9%Grok 4.6
LMArena Text: science14371468Kimi K2.6
LMArena Text: medicine and healthcare14201457Kimi K2.6
LMArena Text: legal and government14291462Kimi K2.6
LMArena Text: business and finance14161445Kimi K2.6
Neither model has a result on the other 5 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index80
Web design benchmarks for Grok 4.6 and Kimi K2.6
BenchmarkGrok 4.6Kimi K2.6Leader
Design Arena: websites12891269Grok 4.6
Design Arena: UI components12941266Grok 4.6
Design Arena: game dev12961251Grok 4.6
Design Arena: data viz12831249Grok 4.6
Design Arena: 3D12771268Grok 4.6
Design Arena: all code categories12921272Grok 4.6
Design Arena: SVG12391181Grok 4.6
Design Arena: ASCII art12781164Grok 4.6
LiveBench design79.8%Not measuredOnly Grok 4.6 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index624
General benchmarks for Grok 4.6 and Kimi K2.6
BenchmarkGrok 4.6Kimi K2.6Leader
LiveBench data analysis75.3%Not measuredOnly Grok 4.6 measured
Public Benefits Bench (Vals AI)66.8%56.6%Grok 4.6
SAGE (Vals AI)28.9%50.2%Kimi K2.6
MedScribe (Vals AI)86.5%78.2%Grok 4.6
Vals Multimodal IndexNot measured56.4%Only Kimi K2.6 measured
IFBenchNot measured76.0%Only Kimi K2.6 measured
Long context reasoning (AA-LCR)81.0%81.0%Tie
DTBench97.3%90.9%Grok 4.6
LMCA48.5%37.3%Grok 4.6
Furniture assembly40.0%21.7%Grok 4.6
ExploitBenchNot measured18.4%Only Kimi K2.6 measured
LMArena Text14291455Kimi K2.6
LMArena Text: instruction following14311451Kimi K2.6
LMArena Text: creative writing14261434Kimi K2.6
LMArena Vision12631282Kimi K2.6
LMArena Text: English14331460Kimi K2.6
LMArena Text: non-English14201446Kimi K2.6
LMArena Text: Chinese14761520Kimi K2.6
LMArena Text: German14261451Kimi K2.6
LMArena Text: Japanese13781443Kimi K2.6
LMArena Text: Korean13911427Kimi K2.6
LMArena Text: French14551471Kimi K2.6
LMArena Text: Spanish14141464Kimi K2.6
LMArena Text: Russian14211446Kimi K2.6
LMArena Text: Polish14301438Kimi K2.6
LMArena Text: multi-turn14251453Kimi K2.6
LMArena Text: longer queries14561468Kimi K2.6
LMArena Text: writing and language14291439Kimi K2.6
LMArena Text: entertainment and media14211428Kimi K2.6
LMArena Vision: English12701287Kimi K2.6
LMArena Vision: Chinese12891346Kimi K2.6
LMArena Vision: reading text12721291Kimi K2.6
LMArena Vision: humor12701280Kimi K2.6
LMArena Vision: creative writing12621273Kimi K2.6
LMArena Document14521451Grok 4.6
Neither model has a result on the other 11 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Grok 4.6 and Kimi K2.6
BenchmarkGrok 4.6Kimi K2.6Leader
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

Grok 4.6$0.0050Fits in one request
Kimi K2.6$0.0024Fits in one request

Kimi K2.6 costs less

Repository review

50K input + 3K output tokens

Grok 4.6$0.118Fits in one request
Kimi K2.6$0.043Fits in one request

Kimi K2.6 costs less

Agent loop

200K input + 10K output tokens

Grok 4.6$0.460Fits in one request
Kimi K2.6$0.164Fits in one request

Kimi K2.6 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 Grok 4.6 and Kimi K2.6
SpecificationSpaceXAI Grok 4.6MoonshotAI Kimi K2.6
MakerxAIMoonshot AI
WeightsNo public weights listedOpen weights
ReleasedAugust 12, 2026April 20, 2026
Context window500K262K
Input $/Mtok$2.00$0.65
Output $/Mtok$6.00$3.41
Coding index76.444.2
Independent measurements behind it21
Cost per solved task$0.82$0.35
SourceOpenRouter listingOpenRouter listing

Questions

Is Grok 4.6 better than Kimi K2.6 for coding?

Pick Grok 4.6 for coding: it scores 76.4 on the Vibe Coding Index against 44.2 for Kimi K2.6. Pick Kimi K2.6 when output tokens cost 1.8x less, or when a solved task costs $0.35 against $0.82.

Which is cheaper, Grok 4.6 or Kimi K2.6?

Grok 4.6 costs $2.00 per million input tokens and $6.00 per million output tokens; Kimi K2.6 costs $0.65 and $3.41. Per solved SWE-bench Verified task, Grok 4.6 costs $0.82 and Kimi K2.6 $0.35.

Which has the bigger context window, Grok 4.6 or Kimi K2.6?

Grok 4.6, with 500K tokens against 262K.

How many benchmarks is the Grok 4.6 vs Kimi K2.6 comparison based on?

100 benchmarks have a result for both models as of October 21, 2026. Grok 4.6's coding index rests on 2 independent benchmarks and Kimi K2.6's on 1. Where only one model has a result, the page says so instead of naming a winner.

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