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GLM 5.1 vs Kimi K3

Kimi K3 leads GLM 5.1 on coding, 62.3 to 49.2 on the Vibe Coding Index, and GLM 5.1 costs 3.4x less per output token ($4.40 vs $15.00 per million). Updated October 22, 2026; 82 benchmarks have a result for both.

Replace GLM 5.1 Replace Kimi K3
GLM 5.1Z.ai
Coding
49.2
Overall
57.5
Output $/M
$4.40
4
Kimi K3Moonshot AI
Coding
62.3
Overall
66.5
Output $/M
$15.00
78
vs boards won of 82 shared

GLM 5.1 or Kimi K3: which to pick

Pick Kimi K3 for coding: it scores 62.3 on the Vibe Coding Index against 49.2 for GLM 5.1.

Pick GLM 5.1 for output tokens 3.4x cheaper ($4.40 vs $15.00 per million) and a lower cost per solved task ($0.60 against $0.81).

Model AGLM 5.1Z.ai49.2/1003 independent benchmarks$0.60 per solved taskModel BKimi K3Moonshot AI62.3/1006 independent benchmarks$0.81 per solved task
Shared results
82
GLM 5.1 only
7
Kimi K3 only
35
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
GLM 5.1 49.2 from 3 benchmarks, Kimi K3 62.3 from 6 benchmarks.
Widest category
Math, 22.7 points apart on average over 5 shared benchmarks.
Widest single gap
ProofBench: GLM 5.1 22.2% against Kimi K3 87.0%, 64.8 points apart on a 0 to 100 scale.
Output price
GLM 5.1 $4.40 against Kimi K3 $15.00 per million output tokens, 3.4x apart.
Context window
GLM 5.1 takes 205K 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 5.1BarsKimi K3Ties
Coding114
Intelligence02
Agentic work212
Reasoning09
Math05
Knowledge010
Web design16
General020
All shared boards478
CodingLike-for-likeSix of these boards feed the Vibe Coding Index114
Coding benchmarks for GLM 5.1 and Kimi K3
BenchmarkGLM 5.1Kimi K3Leader
LiveBench codingNot measured59.3%Only Kimi K3 measured
LMArena WebDev15081655Kimi K3
AA Coding Index55.876.2Kimi K3
LiveCodeBench (Vals AI)81.4%87.2%Kimi K3
SWE-bench Verified (Vals AI)76.4%93.4%Kimi K3
Terminal-Bench 4 (Vals AI)Not measured17.2%Only Kimi K3 measured
Vibe Code Bench (Vals AI)31.5%85.0%Kimi K3
Code migration (Vals AI)25.8%16.1%GLM 5.1
ProgramBench (Vals AI)0.0%2.0%Kimi K3
IOI (Vals AI)Not measured48.9%Only Kimi K3 measured
Terminal-Bench 2.1 (Vals AI)56.9%80.9%Kimi K3
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
SciCode44.8%59.5%Kimi K3
Terminal-Bench Hard (Artificial Analysis run)43.2%Not measuredOnly GLM 5.1 measured
FrontierCodeNot measured44.2%Only Kimi K3 measured
FrontierSWENot measured25.9%Only Kimi K3 measured
WeirdML57.1%82.6%Kimi K3
ALE-Bench887.11524.5Kimi K3
LMArena Text: coding14851508Kimi K3
LMArena Text: software and IT14841499Kimi K3
LMArena WebDev: React15051670Kimi K3
LMArena WebDev: HTML15081644Kimi K3
LMArena WebDev: from an imageNot measured1579Only Kimi K3 measured
Neither model has a result on the other 14 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
Intelligence benchmarks for GLM 5.1 and Kimi K3
BenchmarkGLM 5.1Kimi K3Leader
AA Intelligence Index26.143.6Kimi K3
Epoch Capabilities Index149.8157.9Kimi K3
Agentic workLike-for-likePublic boards, shown as published, kept out of the index212
Agentic work benchmarks for GLM 5.1 and Kimi K3
BenchmarkGLM 5.1Kimi K3Leader
AA Agentic Index23.950.0Kimi K3
Design Arena: agents building web apps11751295Kimi K3
Design Arena: agents building full-stack apps11671315Kimi K3
Design Arena: agents building mobile apps11621269Kimi K3
Design Arena: agents building Android apps11821253Kimi K3
Design Arena: agents building Godot games10531223Kimi K3
Design Arena: agents building games11641252Kimi K3
Design Arena: HTML slides11201206Kimi K3
Design Arena: PowerPoint slides11631247Kimi K3
Design Arena: spreadsheets13151070GLM 5.1
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)44.8%53.1%Kimi K3
Tax Agent Bench (Vals AI)Not measured33.4%Only Kimi K3 measured
Legal Research Bench (Vals AI)27.9%46.1%Kimi K3
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 Telecom97.7%Not measuredOnly GLM 5.1 measured
APEX-Agents40.9%47.8%Kimi K3
PostTrainBenchNot measured32.0%Only Kimi K3 measured
Vending-Bench 2$5,634$5,165GLM 5.1
Neither model has a result on the other 16 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index09
Reasoning benchmarks for GLM 5.1 and Kimi K3
BenchmarkGLM 5.1Kimi K3Leader
GPQA Diamond84.5%92.9%Kimi K3
LiveBench reasoningNot measured90.7%Only Kimi K3 measured
MMMU Pro (Vals AI)Not measured88.2%Only Kimi K3 measured
GPQA Diamond (Artificial Analysis run)86.8%93.5%Kimi K3
Humanity's Last Exam (Artificial Analysis run)30.1%46.9%Kimi K3
GPQA Diamond (Epoch AI run)89.9%93.1%Kimi K3
ARC-AGINot measured94.5%Only Kimi K3 measured
ARC-AGI-2Not measured60.4%Only Kimi K3 measured
SimpleBench55.1%60.7%Kimi K3
Chess puzzles20.0%37.0%Kimi K3
Mystery game puzzlesNot measured26.0%Only Kimi K3 measured
LMArena Text: hard prompts14731495Kimi K3
LMArena Text: expert14781520Kimi K3
LMArena Text: hard prompts in English14821496Kimi K3
Neither model has a result on the other 8 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index05
Math benchmarks for GLM 5.1 and Kimi K3
BenchmarkGLM 5.1Kimi K3Leader
AIME91.9%Not measuredOnly GLM 5.1 measured
OTIS Mock AIME93.3%97.2%Kimi K3
FrontierMath, tiers 1 to 336.8%72.2%Kimi K3
FrontierMath, tier 4Not measured39.0%Only Kimi K3 measured
ProofBench22.2%87.0%Kimi K3
LMArena Text: math14731494Kimi K3
LMArena Text: mathematical work14701505Kimi K3
Neither model has a result on the other 6 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index010
Knowledge benchmarks for GLM 5.1 and Kimi K3
BenchmarkGLM 5.1Kimi K3Leader
MMLU Pro86.9%88.0%Kimi K3
LegalBench (Vals AI)84.4%86.2%Kimi K3
CaseLaw (Vals AI)51.5%Not measuredOnly GLM 5.1 measured
CorpFin (Vals AI)64.5%71.6%Kimi K3
TaxEval (Vals AI)71.2%75.7%Kimi K3
MortgageTax (Vals AI)Not measured66.3%Only Kimi K3 measured
MedCode (Vals AI)41.6%49.4%Kimi K3
SimpleQA Verified34.0%50.6%Kimi K3
LMArena Text: science14781508Kimi K3
LMArena Text: medicine and healthcare14741489Kimi K3
LMArena Text: legal and government14651503Kimi K3
LMArena Text: business and finance14521470Kimi K3
Neither model has a result on the other 6 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index16
Web design benchmarks for GLM 5.1 and Kimi K3
BenchmarkGLM 5.1Kimi K3Leader
Design Arena: websites12901334Kimi K3
Design Arena: UI components12921341Kimi K3
Design Arena: game dev12651358Kimi K3
Design Arena: data viz13661351GLM 5.1
Design Arena: 3D13361387Kimi K3
Design Arena: all code categories12681360Kimi K3
Design Arena: SVG12181302Kimi K3
Design Arena: ASCII art1141Not measuredOnly GLM 5.1 measured
LiveBench designNot measured77.2%Only Kimi K3 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index020
General benchmarks for GLM 5.1 and Kimi K3
BenchmarkGLM 5.1Kimi K3Leader
Vals IndexNot measured53.0%Only Kimi K3 measured
LiveBench data analysisNot measured78.7%Only Kimi K3 measured
Public Benefits Bench (Vals AI)61.8%68.2%Kimi K3
SAGE (Vals AI)Not measured52.8%Only Kimi K3 measured
MedScribe (Vals AI)72.3%88.0%Kimi K3
Vals Multimodal IndexNot measured73.4%Only Kimi K3 measured
IFBench76.3%Not measuredOnly GLM 5.1 measured
Long context reasoning (AA-LCR)73.7%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
ExploitBench18.1%Not measuredOnly GLM 5.1 measured
LMArena Text14631476Kimi K3
LMArena Text: instruction following14531485Kimi K3
LMArena Text: creative writing14531457Kimi K3
LMArena Text: English14761481Kimi K3
LMArena Text: non-English14481466Kimi K3
LMArena Text: Chinese15151529Kimi K3
LMArena Text: German14671490Kimi K3
LMArena Text: Japanese14351494Kimi K3
LMArena Text: Korean14241460Kimi K3
LMArena Text: French14701492Kimi K3
LMArena Text: Spanish14681472Kimi K3
LMArena Text: Russian14541485Kimi K3
LMArena Text: Polish14491458Kimi K3
LMArena Text: multi-turn14731489Kimi K3
LMArena Text: longer queries14671494Kimi K3
LMArena Text: writing and language14541471Kimi K3
LMArena Text: entertainment and media14421453Kimi K3
Neither model has a result on the other 16 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for GLM 5.1 and Kimi K3
BenchmarkGLM 5.1Kimi 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 5.1$0.0036Fits in one request
Kimi K3$0.011Fits in one request

GLM 5.1 costs less

Repository review

50K input + 3K output tokens

GLM 5.1$0.083Fits in one request
Kimi K3$0.195Fits in one request

GLM 5.1 costs less

Agent loop

200K input + 10K output tokens

GLM 5.1$0.324Exceeds the context window
Kimi K3$0.750Fits in one request

GLM 5.1 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 5.1 and Kimi K3
SpecificationZ.ai GLM 5.1MoonshotAI Kimi K3
MakerZ.aiMoonshot AI
WeightsOpen weightsOpen weights
ReleasedApril 7, 2026July 16, 2026
Context window205K1.05M
Input $/Mtok$1.40$3.00
Output $/Mtok$4.40$15.00
Coding index49.262.3
Independent measurements behind it36
Cost per solved task$0.60$0.81
SourceOpenRouter listingOpenRouter listing

Questions

Is GLM 5.1 better than Kimi K3 for coding?

Pick Kimi K3 for coding: it scores 62.3 on the Vibe Coding Index against 49.2 for GLM 5.1. Pick GLM 5.1 for output tokens 3.4x cheaper ($4.40 vs $15.00 per million) and a lower cost per solved task ($0.60 against $0.81).

Which is cheaper, GLM 5.1 or Kimi K3?

GLM 5.1 costs $1.40 per million input tokens and $4.40 per million output tokens; Kimi K3 costs $3.00 and $15.00. Per solved SWE-bench Verified task, GLM 5.1 costs $0.60 and Kimi K3 $0.81.

Which has the bigger context window, GLM 5.1 or Kimi K3?

Kimi K3, with 1.05M tokens against 205K.

How many benchmarks is the GLM 5.1 vs Kimi K3 comparison based on?

82 benchmarks have a result for both models as of October 22, 2026. GLM 5.1's coding index rests on 3 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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