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GLM 4.5 Air vs Kimi K3

Kimi K3 leads GLM 4.5 Air on the Artificial Analysis Intelligence Index, 43.6 to 11.1, and GLM 4.5 Air costs 13.6x less per output token ($1.10 vs $15.00 per million). Updated October 21, 2026; 39 benchmarks have a result for both.

Replace GLM 4.5 Air Replace Kimi K3
GLM 4.5 AirZ.ai
Coding
No data
Overall
No data
Output $/M
$1.10
0
Kimi K3Moonshot AI
Coding
62.3
Overall
66.5
Output $/M
$15.00
39
vs boards won of 39 shared

GLM 4.5 Air or Kimi K3: which to pick

Only Kimi K3 has a coding score, 62.3 on the Vibe Coding Index; GLM 4.5 Air has none, so the two cannot be ranked on coding.

Pick GLM 4.5 Air for output tokens 13.6x cheaper ($1.10 vs $15.00 per million).

Model AGLM 4.5 AirZ.aiNot benchmarkedNo coding benchmarkNo cost per solved taskModel BKimi K3Moonshot AI62.3/1006 independent benchmarks$0.81 per solved task
Shared results
39
GLM 4.5 Air only
9
Kimi K3 only
78
Like-for-like categories
7 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
GLM 4.5 Air not benchmarked, Kimi K3 62.3 from 6 benchmarks.
Widest category
Intelligence, 32.5 points apart on average over 1 shared benchmark.
Widest single gap
Long context reasoning (AA-LCR): GLM 4.5 Air 46.7% against Kimi K3 88.7%, 42.0 points apart on a 0 to 100 scale.
Output price
GLM 4.5 Air $1.10 against Kimi K3 $15.00 per million output tokens, 13.6x apart.
Context window
GLM 4.5 Air takes 131K tokens, Kimi K3 1.05M.

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
CategoryGLM 4.5 AirBarsKimi K3Ties
Coding02
Intelligence01
Reasoning05
Math02
Knowledge04
Web design07
General018
All shared boards039
CodingLike-for-likeSix of these boards feed the Vibe Coding Index02
Coding benchmarks for GLM 4.5 Air and Kimi K3
BenchmarkGLM 4.5 AirKimi K3Leader
LiveBench codingNot measured59.3%Only Kimi K3 measured
LMArena WebDevNot measured1655Only Kimi K3 measured
AA Coding IndexNot measured76.2Only Kimi K3 measured
LiveCodeBench (Vals AI)Not measured87.2%Only Kimi K3 measured
SWE-bench Verified (Vals AI)Not measured93.4%Only Kimi K3 measured
Terminal-Bench 4 (Vals AI)Not measured17.2%Only Kimi K3 measured
Vibe Code Bench (Vals AI)Not measured85.0%Only Kimi K3 measured
Code migration (Vals AI)Not measured16.1%Only Kimi K3 measured
ProgramBench (Vals AI)Not measured2.0%Only Kimi K3 measured
IOI (Vals AI)Not measured48.9%Only Kimi K3 measured
Terminal-Bench 2.1 (Vals AI)Not measured80.9%Only Kimi K3 measured
SWE-bench Multimodal (Vals AI)Not measured44.2%Only Kimi K3 measured
Vibe Code Bench 1-100 (Vals AI)Not measured18.2%Only Kimi K3 measured
CyberBench (Vals AI)Not measured75.2%Only Kimi K3 measured
LiveCodeBench (Artificial Analysis run)68.4%Not measuredOnly GLM 4.5 Air measured
SciCodeNot measured59.5%Only Kimi K3 measured
Terminal-Bench Hard (Artificial Analysis run)20.5%Not measuredOnly GLM 4.5 Air measured
FrontierCodeNot measured44.2%Only Kimi K3 measured
FrontierSWENot measured25.9%Only Kimi K3 measured
GSO-Bench2.9%Not measuredOnly GLM 4.5 Air measured
WeirdMLNot measured82.6%Only Kimi K3 measured
ALE-BenchNot measured1524.5Only Kimi K3 measured
LMArena Text: coding13971508Kimi K3
LMArena Text: software and IT14011499Kimi K3
LMArena WebDev: ReactNot measured1670Only Kimi K3 measured
LMArena WebDev: HTMLNot measured1644Only Kimi K3 measured
LMArena WebDev: from an imageNot measured1579Only Kimi K3 measured
Neither model has a result on the other 12 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
Intelligence benchmarks for GLM 4.5 Air and Kimi K3
BenchmarkGLM 4.5 AirKimi K3Leader
AA Intelligence Index11.143.6Kimi K3
Epoch Capabilities IndexNot measured157.9Only Kimi K3 measured
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index25 boards, none shared
Agentic work benchmarks for GLM 4.5 Air and Kimi K3
BenchmarkGLM 4.5 AirKimi K3Leader
AA Agentic IndexNot measured50.0Only Kimi K3 measured
Design Arena: agents building web appsNot measured1295Only Kimi K3 measured
Design Arena: agents building full-stack appsNot measured1315Only Kimi K3 measured
Design Arena: agents building mobile appsNot measured1269Only Kimi K3 measured
Design Arena: agents building Android appsNot measured1250Only Kimi K3 measured
Design Arena: agents building Godot gamesNot measured1223Only Kimi K3 measured
Design Arena: agents building gamesNot measured1252Only Kimi K3 measured
Design Arena: HTML slidesNot measured1256Only Kimi K3 measured
Design Arena: PowerPoint slidesNot measured1273Only Kimi K3 measured
Design Arena: spreadsheetsNot measured1058Only Kimi K3 measured
LiveBench researchNot measured79.0%Only Kimi K3 measured
LiveBench browserNot measured16.0%Only Kimi K3 measured
LiveBench long agenticNot measured42.8%Only Kimi K3 measured
Finance Agent (Vals AI)Not measured53.1%Only Kimi K3 measured
Tax Agent Bench (Vals AI)Not measured33.4%Only Kimi K3 measured
Legal Research Bench (Vals AI)Not measured46.1%Only Kimi K3 measured
Harvey's Legal Agent Benchmark (Vals AI)Not measured12.9%Only Kimi K3 measured
Excel Modeling Benchmark (Vals AI)Not measured66.7%Only Kimi K3 measured
BioMysteryBench (Vals AI)Not measured72.6%Only Kimi K3 measured
Terminal-Bench-Science (Vals AI)Not measured1.4%Only Kimi K3 measured
Time Horizon Index (Vals AI)Not measured10.5%Only Kimi K3 measured
τ²-Bench Telecom46.5%Not measuredOnly GLM 4.5 Air measured
APEX-AgentsNot measured47.8%Only Kimi K3 measured
PostTrainBenchNot measured32.0%Only Kimi K3 measured
Vending-Bench 2Not measured$5,165Only Kimi K3 measured
Neither model has a result on the other 16 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index05
Reasoning benchmarks for GLM 4.5 Air and Kimi K3
BenchmarkGLM 4.5 AirKimi K3Leader
GPQA DiamondNot measured92.9%Only Kimi K3 measured
LiveBench reasoningNot measured90.7%Only Kimi K3 measured
MMMU Pro (Vals AI)Not measured88.2%Only Kimi K3 measured
GPQA Diamond (Artificial Analysis run)73.3%93.5%Kimi K3
Humanity's Last Exam (Artificial Analysis run)7.0%46.9%Kimi K3
GPQA Diamond (Epoch AI run)Not measured93.1%Only Kimi K3 measured
ARC-AGINot measured94.5%Only Kimi K3 measured
ARC-AGI-2Not measured60.4%Only Kimi K3 measured
SimpleBenchNot measured60.7%Only Kimi K3 measured
Chess puzzlesNot measured37.0%Only Kimi K3 measured
Mystery game puzzlesNot measured26.0%Only Kimi K3 measured
LMArena Text: hard prompts13791495Kimi K3
LMArena Text: expert13701520Kimi K3
LMArena Text: hard prompts in English13881496Kimi K3
Kagi LLM Benchmark43.0%Not measuredOnly GLM 4.5 Air measured
Neither model has a result on the other 7 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index02
Math benchmarks for GLM 4.5 Air and Kimi K3
BenchmarkGLM 4.5 AirKimi K3Leader
AA Math Index80.7Not measuredOnly GLM 4.5 Air measured
AIME 2025 (Artificial Analysis run)80.7%Not measuredOnly GLM 4.5 Air measured
OTIS Mock AIMENot measured97.2%Only Kimi K3 measured
FrontierMath, tiers 1 to 3Not measured72.2%Only Kimi K3 measured
FrontierMath, tier 4Not measured39.0%Only Kimi K3 measured
ProofBenchNot measured87.0%Only Kimi K3 measured
LMArena Text: math13961494Kimi K3
LMArena Text: mathematical work13961505Kimi K3
Neither model has a result on the other 5 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index04
Knowledge benchmarks for GLM 4.5 Air and Kimi K3
BenchmarkGLM 4.5 AirKimi K3Leader
MMLU ProNot measured88.0%Only Kimi K3 measured
LegalBench (Vals AI)Not measured86.2%Only Kimi K3 measured
CorpFin (Vals AI)Not measured71.6%Only Kimi K3 measured
TaxEval (Vals AI)Not measured75.7%Only Kimi K3 measured
MortgageTax (Vals AI)Not measured66.3%Only Kimi K3 measured
MedCode (Vals AI)Not measured49.4%Only Kimi K3 measured
MMLU Pro (Artificial Analysis run)81.5%Not measuredOnly GLM 4.5 Air measured
SimpleQA VerifiedNot measured50.6%Only Kimi K3 measured
LMArena Text: science14071508Kimi K3
LMArena Text: medicine and healthcare14021489Kimi K3
LMArena Text: legal and government13821503Kimi K3
LMArena Text: business and finance13711470Kimi K3
Neither model has a result on the other 6 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index07
Web design benchmarks for GLM 4.5 Air and Kimi K3
BenchmarkGLM 4.5 AirKimi K3Leader
Design Arena: websites11461335Kimi K3
Design Arena: UI components11231344Kimi K3
Design Arena: game dev10941359Kimi K3
Design Arena: data viz11861351Kimi K3
Design Arena: 3D11231388Kimi K3
Design Arena: all code categories11371360Kimi K3
Design Arena: SVG10711302Kimi K3
LiveBench designNot measured77.2%Only Kimi K3 measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index018
General benchmarks for GLM 4.5 Air and Kimi K3
BenchmarkGLM 4.5 AirKimi K3Leader
Vals IndexNot measured53.0%Only Kimi K3 measured
LiveBench data analysisNot measured78.7%Only Kimi K3 measured
Public Benefits Bench (Vals AI)Not measured68.2%Only Kimi K3 measured
SAGE (Vals AI)Not measured52.8%Only Kimi K3 measured
MedScribe (Vals AI)Not measured88.0%Only Kimi K3 measured
Vals Multimodal IndexNot measured73.4%Only Kimi K3 measured
IFBench37.6%Not measuredOnly GLM 4.5 Air measured
Long context reasoning (AA-LCR)46.7%88.7%Kimi K3
DTBenchNot measured91.2%Only Kimi K3 measured
LMCANot measured52.7%Only Kimi K3 measured
Surface Evolver BenchNot measured95.0%Only Kimi K3 measured
Furniture assemblyNot measured34.2%Only Kimi K3 measured
LMArena Text13841476Kimi K3
LMArena Text: instruction following13541485Kimi K3
LMArena Text: creative writing13431457Kimi K3
LMArena Text: English13971481Kimi K3
LMArena Text: non-English13661466Kimi K3
LMArena Text: Chinese14261529Kimi K3
LMArena Text: German13771490Kimi K3
LMArena Text: Japanese13481494Kimi K3
LMArena Text: Korean13081460Kimi K3
LMArena Text: French14001492Kimi K3
LMArena Text: Spanish13851472Kimi K3
LMArena Text: Russian13731485Kimi K3
LMArena Text: Polish13681458Kimi K3
LMArena Text: multi-turn13711489Kimi K3
LMArena Text: longer queries13661494Kimi K3
LMArena Text: writing and language13541471Kimi K3
LMArena Text: entertainment and media13391453Kimi K3
Neither model has a result on the other 17 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for GLM 4.5 Air and Kimi K3
BenchmarkGLM 4.5 AirKimi K3Leader
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

GLM 4.5 Air$0.0008Fits in one request
Kimi K3$0.011Fits in one request

GLM 4.5 Air costs less

Repository review

50K input + 3K output tokens

GLM 4.5 Air$0.013Fits in one request
Kimi K3$0.195Fits in one request

GLM 4.5 Air costs less

Agent loop

200K input + 10K output tokens

GLM 4.5 Air$0.051Exceeds the context window
Kimi K3$0.750Fits in one request

GLM 4.5 Air 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 GLM 4.5 Air and Kimi K3
SpecificationZ.ai GLM 4.5 AirMoonshotAI Kimi K3
MakerZ.aiMoonshot AI
WeightsOpen weightsOpen weights
ReleasedJuly 25, 2025July 16, 2026
Context window131K1.05M
Input $/Mtok$0.20$3.00
Output $/Mtok$1.10$15.00
Coding indexNot benchmarked62.3
Independent measurements behind it06
Cost per solved taskNot computable$0.81
SourceOpenRouter listingOpenRouter listing

Questions

Is GLM 4.5 Air better than Kimi K3 for coding?

Only Kimi K3 has a coding score, 62.3 on the Vibe Coding Index; GLM 4.5 Air has none, so the two cannot be ranked on coding. Pick GLM 4.5 Air for output tokens 13.6x cheaper ($1.10 vs $15.00 per million).

Which is cheaper, GLM 4.5 Air or Kimi K3?

GLM 4.5 Air costs $0.20 per million input tokens and $1.10 per million output tokens; Kimi K3 costs $3.00 and $15.00. Cost per solved task is known for Kimi K3 only.

Which has the bigger context window, GLM 4.5 Air or Kimi K3?

Kimi K3, with 1.05M tokens against 131K.

How many benchmarks is the GLM 4.5 Air vs Kimi K3 comparison based on?

39 benchmarks have a result for both models as of October 21, 2026. GLM 4.5 Air's coding index rests on 0 independent benchmarks and Kimi K3's on 6. Where only one model has a result, the page says so instead of naming a winner.

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