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GPT-4.1 Nano vs Kimi K2.6

Kimi K2.6 leads GPT-4.1 Nano on the Artificial Analysis Intelligence Index, 27.0 to 7.8, and GPT-4.1 Nano costs 10.0x less per output token ($0.40 vs $4.00 per million). Updated October 22, 2026; 56 benchmarks have a result for both.

Replace GPT-4.1 Nano Replace Kimi K2.6
GPT-4.1 NanoOpenAI
Coding
No data
Overall
24.7
Output $/M
$0.40
0
Kimi K2.6Moonshot AI
Coding
52.1
Overall
60.5
Output $/M
$4.00
56
vs boards won of 56 shared

GPT-4.1 Nano or Kimi K2.6: which to pick

Only Kimi K2.6 has a coding score, 52.1 on the Vibe Coding Index; GPT-4.1 Nano has none, so the two cannot be ranked on coding.

Pick GPT-4.1 Nano for output tokens 10.0x cheaper ($0.40 vs $4.00 per million) and a larger context window (1.05M against 262K tokens).

Model AGPT-4.1 NanoOpenAINot benchmarkedNo coding benchmarkNo cost per solved taskModel BKimi K2.6Moonshot AI52.1/1003 independent benchmarks$0.35 per solved task
Shared results
56
GPT-4.1 Nano only
15
Kimi K2.6 only
53
Like-for-like categories
8 of 9

Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.

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
GPT-4.1 Nano not benchmarked, Kimi K2.6 52.1 from 3 benchmarks.
Widest category
Agentic work, 78.7 points apart on average over 1 shared benchmark.
Widest single gap
τ²-Bench Telecom: GPT-4.1 Nano 17.3% against Kimi K2.6 95.9%, 78.7 points apart on a 0 to 100 scale.
Output price
GPT-4.1 Nano $0.40 against Kimi K2.6 $4.00 per million output tokens, 10.0x apart.
Context window
GPT-4.1 Nano takes 1.05M 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
CategoryGPT-4.1 NanoBarsKimi K2.6Ties
Coding06
Intelligence02
Agentic work01
Reasoning09
Math03
Knowledge010
Web design06
General019
All shared boards056
CodingLike-for-likeSix of these boards feed the Vibe Coding Index06
Coding benchmarks for GPT-4.1 Nano and Kimi K2.6
BenchmarkGPT-4.1 NanoKimi K2.6Leader
Aider polyglot8.9%Not measuredOnly GPT-4.1 Nano measured
LMArena WebDevNot measured1509Only Kimi K2.6 measured
AA Coding Index11.161.8Kimi K2.6
LiveCodeBench (Vals AI)42.7%86.8%Kimi K2.6
SWE-bench Verified (Vals AI)Not measured76.2%Only Kimi K2.6 measured
Vibe Code Bench (Vals AI)Not measured37.9%Only Kimi K2.6 measured
Code migration (Vals AI)Not measured27.8%Only Kimi K2.6 measured
ProgramBench (Vals AI)Not measured0.0%Only Kimi K2.6 measured
Terminal-Bench 2.1 (Vals AI)Not measured53.6%Only Kimi K2.6 measured
LiveCodeBench (Artificial Analysis run)32.6%Not measuredOnly GPT-4.1 Nano measured
SciCodeNot measured51.5%Only Kimi K2.6 measured
Terminal-Bench Hard (Artificial Analysis run)3.8%43.9%Kimi K2.6
WeirdML19.0%55.9%Kimi K2.6
ALE-BenchNot measured1092.7Only Kimi K2.6 measured
LMArena Text: coding13061489Kimi K2.6
LMArena Text: software and IT13051484Kimi K2.6
LMArena WebDev: ReactNot measured1505Only Kimi K2.6 measured
LMArena WebDev: HTMLNot measured1485Only Kimi K2.6 measured
LMArena WebDev: from an imageNot measured1521Only Kimi K2.6 measured
Neither model has a result on the other 20 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
Intelligence benchmarks for GPT-4.1 Nano and Kimi K2.6
BenchmarkGPT-4.1 NanoKimi K2.6Leader
AA Intelligence Index7.827.0Kimi K2.6
Epoch Capabilities Index129.5150.9Kimi K2.6
Agentic workLike-for-likePublic boards, shown as published, kept out of the index01
Agentic work benchmarks for GPT-4.1 Nano and Kimi K2.6
BenchmarkGPT-4.1 NanoKimi K2.6Leader
AA Agentic IndexNot measured20.5Only Kimi K2.6 measured
Design Arena: agents building web appsNot measured1268Only Kimi K2.6 measured
Design Arena: agents building full-stack appsNot measured1155Only Kimi K2.6 measured
Design Arena: agents building mobile appsNot measured1156Only Kimi K2.6 measured
Design Arena: agents building Android appsNot measured1161Only Kimi K2.6 measured
Design Arena: agents building Godot gamesNot measured1120Only Kimi K2.6 measured
Design Arena: agents building gamesNot measured1141Only Kimi K2.6 measured
Design Arena: HTML slidesNot measured1135Only Kimi K2.6 measured
Design Arena: PowerPoint slidesNot measured1105Only Kimi K2.6 measured
Design Arena: spreadsheetsNot measured1276Only Kimi K2.6 measured
Finance Agent (Vals AI)Not measured44.9%Only Kimi K2.6 measured
Tax Agent Bench (Vals AI)Not measured12.4%Only Kimi K2.6 measured
Legal Research Bench (Vals AI)Not measured15.9%Only Kimi K2.6 measured
Excel Modeling Benchmark (Vals AI)Not measured57.9%Only Kimi K2.6 measured
τ²-Bench Telecom17.3%95.9%Kimi K2.6
OSWorld 2.0Not measured4.6%Only Kimi K2.6 measured
Vending-Bench 2Not measured$6,205Only Kimi K2.6 measured
Berkeley Function Calling Leaderboard (BFCL)33.1%Not measuredOnly GPT-4.1 Nano measured
Neither model has a result on the other 23 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index09
Reasoning benchmarks for GPT-4.1 Nano and Kimi K2.6
BenchmarkGPT-4.1 NanoKimi K2.6Leader
GPQA Diamond50.8%89.1%Kimi K2.6
MMMU Pro (Vals AI)55.0%86.3%Kimi K2.6
GPQA Diamond (Artificial Analysis run)51.2%91.1%Kimi K2.6
Humanity's Last Exam (Artificial Analysis run)3.8%37.5%Kimi K2.6
GPQA Diamond (Epoch AI run)48.9%90.8%Kimi K2.6
ARC-AGI0.0%Not measuredOnly GPT-4.1 Nano measured
ARC-AGI-20.0%Not measuredOnly GPT-4.1 Nano measured
Chess puzzles0.0%20.0%Kimi K2.6
Mystery game puzzlesNot measured18.0%Only Kimi K2.6 measured
EBR-benchNot measured2.4%Only Kimi K2.6 measured
LMArena Text: hard prompts12861470Kimi K2.6
LMArena Text: expert12711491Kimi K2.6
LMArena Text: hard prompts in English12931471Kimi K2.6
LMArena Vision: diagramsNot measured1298Only Kimi K2.6 measured
LMArena Vision: homeworkNot measured1310Only Kimi K2.6 measured
Kagi LLM Benchmark33.3%Not measuredOnly GPT-4.1 Nano measured
Neither model has a result on the other 6 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index03
Math benchmarks for GPT-4.1 Nano and Kimi K2.6
BenchmarkGPT-4.1 NanoKimi K2.6Leader
AIME26.5%Not measuredOnly GPT-4.1 Nano measured
MATH 500 (Vals AI)80.2%Not measuredOnly GPT-4.1 Nano measured
MGSM (Vals AI)69.3%Not measuredOnly GPT-4.1 Nano measured
AA Math Index24.0Not measuredOnly GPT-4.1 Nano measured
AIME 2025 (Artificial Analysis run)24.0%Not measuredOnly GPT-4.1 Nano measured
OTIS Mock AIME28.9%96.1%Kimi K2.6
FrontierMath, tiers 1 to 3Not measured57.2%Only Kimi K2.6 measured
FrontierMath, tier 4Not measured25.6%Only Kimi K2.6 measured
ProofBenchNot measured16.0%Only Kimi K2.6 measured
MATH level 570.0%Not measuredOnly GPT-4.1 Nano measured
LMArena Text: math12741474Kimi K2.6
LMArena Text: mathematical work12741480Kimi K2.6
Neither model has a result on the other 1 board here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index010
Knowledge benchmarks for GPT-4.1 Nano and Kimi K2.6
BenchmarkGPT-4.1 NanoKimi K2.6Leader
MMLU Pro63.5%87.6%Kimi K2.6
LegalBench (Vals AI)61.1%84.7%Kimi K2.6
CaseLaw (Vals AI)Not measured61.2%Only Kimi K2.6 measured
CorpFin (Vals AI)42.1%66.7%Kimi K2.6
TaxEval (Vals AI)60.8%74.7%Kimi K2.6
MortgageTax (Vals AI)52.8%65.8%Kimi K2.6
MedQA (Vals AI)68.2%Not measuredOnly GPT-4.1 Nano measured
MedCode (Vals AI)Not measured40.1%Only Kimi K2.6 measured
MMLU Pro (Artificial Analysis run)65.7%Not measuredOnly GPT-4.1 Nano measured
SimpleQA Verified6.0%34.9%Kimi K2.6
LMArena Text: science12971468Kimi K2.6
LMArena Text: medicine and healthcare12761457Kimi K2.6
LMArena Text: legal and government13001462Kimi K2.6
LMArena Text: business and finance12671445Kimi K2.6
Neither model has a result on the other 4 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index06
Web design benchmarks for GPT-4.1 Nano and Kimi K2.6
BenchmarkGPT-4.1 NanoKimi K2.6Leader
Design Arena: websites9731269Kimi K2.6
Design Arena: UI components9131264Kimi K2.6
Design Arena: game dev9701250Kimi K2.6
Design Arena: data viz8911249Kimi K2.6
Design Arena: 3D9241267Kimi K2.6
Design Arena: all code categories9621271Kimi K2.6
Design Arena: SVGNot measured1180Only Kimi K2.6 measured
Design Arena: ASCII artNot measured1165Only Kimi K2.6 measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index019
General benchmarks for GPT-4.1 Nano and Kimi K2.6
BenchmarkGPT-4.1 NanoKimi K2.6Leader
Public Benefits Bench (Vals AI)Not measured56.6%Only Kimi K2.6 measured
SAGE (Vals AI)Not measured50.2%Only Kimi K2.6 measured
MedScribe (Vals AI)Not measured78.2%Only Kimi K2.6 measured
Vals Multimodal IndexNot measured56.4%Only Kimi K2.6 measured
IFBench32.0%76.0%Kimi K2.6
Long context reasoning (AA-LCR)20.3%81.0%Kimi K2.6
DTBench52.5%90.9%Kimi K2.6
LMCA5.5%37.3%Kimi K2.6
Fiction.LiveBench25.0%Not measuredOnly GPT-4.1 Nano measured
Furniture assemblyNot measured21.7%Only Kimi K2.6 measured
ExploitBenchNot measured18.4%Only Kimi K2.6 measured
LMArena Text12851455Kimi K2.6
LMArena Text: instruction following12661451Kimi K2.6
LMArena Text: creative writing12601434Kimi K2.6
LMArena Vision10631282Kimi K2.6
LMArena Text: English13031460Kimi K2.6
LMArena Text: non-English12601446Kimi K2.6
LMArena Text: Chinese12701520Kimi K2.6
LMArena Text: German12881451Kimi K2.6
LMArena Text: Japanese11981443Kimi K2.6
LMArena Text: KoreanNot measured1427Only Kimi K2.6 measured
LMArena Text: FrenchNot measured1471Only Kimi K2.6 measured
LMArena Text: SpanishNot measured1464Only Kimi K2.6 measured
LMArena Text: Russian12611446Kimi K2.6
LMArena Text: PolishNot measured1438Only Kimi K2.6 measured
LMArena Text: multi-turn12771453Kimi K2.6
LMArena Text: longer queries12831468Kimi K2.6
LMArena Text: writing and language12611439Kimi K2.6
LMArena Text: entertainment and media12431428Kimi K2.6
LMArena Vision: English11011287Kimi K2.6
LMArena Vision: ChineseNot measured1346Only Kimi K2.6 measured
LMArena Vision: reading textNot measured1291Only Kimi K2.6 measured
LMArena Vision: humorNot measured1280Only Kimi K2.6 measured
LMArena Vision: creative writingNot measured1273Only Kimi K2.6 measured
LMArena DocumentNot measured1451Only Kimi K2.6 measured
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 GPT-4.1 Nano and Kimi K2.6
BenchmarkGPT-4.1 NanoKimi 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

GPT-4.1 Nano$0.0003Fits in one request
Kimi K2.6$0.0029Fits in one request

GPT-4.1 Nano costs less

Repository review

50K input + 3K output tokens

GPT-4.1 Nano$0.0062Fits in one request
Kimi K2.6$0.059Fits in one request

GPT-4.1 Nano costs less

Agent loop

200K input + 10K output tokens

GPT-4.1 Nano$0.024Fits in one request
Kimi K2.6$0.230Fits in one request

GPT-4.1 Nano 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 GPT-4.1 Nano and Kimi K2.6
SpecificationOpenAI GPT-4.1 NanoMoonshotAI Kimi K2.6
MakerOpenAIMoonshot AI
WeightsNo public weights listedOpen weights
ReleasedApril 14, 2025April 20, 2026
Context window1.05M262K
Input $/Mtok$0.10$0.95
Output $/Mtok$0.40$4.00
Coding indexNot benchmarked52.1
Independent measurements behind it03
Cost per solved taskNot computable$0.35
SourceOpenRouter listingOpenRouter listing

Questions

Is GPT-4.1 Nano better than Kimi K2.6 for coding?

Only Kimi K2.6 has a coding score, 52.1 on the Vibe Coding Index; GPT-4.1 Nano has none, so the two cannot be ranked on coding. Pick GPT-4.1 Nano for output tokens 10.0x cheaper ($0.40 vs $4.00 per million) and a larger context window (1.05M against 262K tokens).

Which is cheaper, GPT-4.1 Nano or Kimi K2.6?

GPT-4.1 Nano costs $0.10 per million input tokens and $0.40 per million output tokens; Kimi K2.6 costs $0.95 and $4.00. Cost per solved task is known for Kimi K2.6 only.

Which has the bigger context window, GPT-4.1 Nano or Kimi K2.6?

GPT-4.1 Nano, with 1.05M tokens against 262K.

How many benchmarks is the GPT-4.1 Nano vs Kimi K2.6 comparison based on?

56 benchmarks have a result for both models as of October 22, 2026. GPT-4.1 Nano's coding index rests on 0 independent benchmarks and Kimi K2.6's on 3. Where only one model has a result, the page says so instead of naming a winner.

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