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Grok 4.3 vs Inkling Small

Grok 4.3 leads Inkling Small on coding, 37.4 to 27.3 on the Vibe Coding Index, and Inkling Small costs 2.1x less per output token ($1.20 vs $2.50 per million). Updated October 22, 2026; 75 benchmarks have a result for both.

Replace Grok 4.3 Replace Inkling Small
Grok 4.3xAI
Coding
37.4
Overall
53.1
Output $/M
$2.50
18
T Inkling SmallThinking Machines
Coding
27.3
Overall
43.6
Output $/M
$1.20
57
vs boards won of 75 shared

Grok 4.3 or Inkling Small: which to pick

Pick Grok 4.3 for coding: it scores 37.4 on the Vibe Coding Index against 27.3 for Inkling Small, though on 3 benchmarks against 4.

Pick Inkling Small for output tokens 2.1x cheaper ($1.20 vs $2.50 per million) and a lower cost per solved task ($0.16 against $0.31).

Model AGrok 4.3xAI37.4/1003 independent benchmarks$0.31 per solved taskModel BInkling SmallThinking Machines27.3/1004 independent benchmarks$0.16 per solved task
Shared results
75
Grok 4.3 only
30
Inkling Small only
9
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
Grok 4.3 37.4 from 3 benchmarks, Inkling Small 27.3 from 4 benchmarks.
Widest category
Agentic work, 8.8 points apart on average over 5 shared benchmarks.
Widest single gap
SimpleQA Verified: Grok 4.3 33.2% against Inkling Small 19.1%, 14.1 points apart on a 0 to 100 scale.
Output price
Grok 4.3 $2.50 against Inkling Small $1.20 per million output tokens, 2.1x apart.
Context window
Grok 4.3 takes 1M tokens, Inkling Small 524K.

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 4.3BarsInkling SmallTies
Coding213
Intelligence01
Agentic work05
Reasoning45
Math24
Knowledge47
General622
All shared boards1857
CodingLike-for-likeSix of these boards feed the Vibe Coding Index213
Coding benchmarks for Grok 4.3 and Inkling Small
BenchmarkGrok 4.3Inkling SmallLeader
LMArena WebDev13581409Inkling Small
AA Coding Index42.252.9Inkling Small
LiveCodeBench (Vals AI)84.5%85.9%Inkling Small
SWE-bench Verified (Vals AI)71.4%82.2%Inkling Small
Terminal-Bench 4 (Vals AI)Not measured0.0%Only Inkling Small measured
Vibe Code Bench (Vals AI)19.4%19.1%Grok 4.3
Code migration (Vals AI)6.8%13.7%Inkling Small
ProgramBench (Vals AI)0.0%0.5%Inkling Small
IOI (Vals AI)Not measured9.3%Only Inkling Small measured
Terminal-Bench 2.1 (Vals AI)42.0%55.1%Inkling Small
SkillsBench (Vals AI)40.6%33.6%Grok 4.3
CyberBench (Vals AI)Not measured64.1%Only Inkling Small measured
SciCode48.3%49.7%Inkling Small
Terminal-Bench Hard (Artificial Analysis run)37.9%Not measuredOnly Grok 4.3 measured
WeirdML49.9%Not measuredOnly Grok 4.3 measured
ALE-Bench944.2Not measuredOnly Grok 4.3 measured
LMArena Text: coding14151450Inkling Small
LMArena Text: software and IT14161447Inkling Small
LMArena WebDev: React13531399Inkling Small
LMArena WebDev: HTML13671398Inkling Small
LMArena WebDev: from an image13751410Inkling Small
Neither model has a result on the other 18 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
Intelligence benchmarks for Grok 4.3 and Inkling Small
BenchmarkGrok 4.3Inkling SmallLeader
AA Intelligence Index24.925.7Inkling Small
Epoch Capabilities IndexNot measured150.3Only Inkling Small measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index05
Agentic work benchmarks for Grok 4.3 and Inkling Small
BenchmarkGrok 4.3Inkling SmallLeader
AA Agentic Index15.523.5Inkling Small
Design Arena: agents building web apps1126Not measuredOnly Grok 4.3 measured
Design Arena: agents building full-stack apps1006Not measuredOnly Grok 4.3 measured
Design Arena: agents building mobile apps1058Not measuredOnly Grok 4.3 measured
Design Arena: agents building Android apps962Not measuredOnly Grok 4.3 measured
Design Arena: agents building Godot games914Not measuredOnly Grok 4.3 measured
Design Arena: agents building games1007Not measuredOnly Grok 4.3 measured
Design Arena: HTML slides959Not measuredOnly Grok 4.3 measured
Design Arena: PowerPoint slides988Not measuredOnly Grok 4.3 measured
Design Arena: spreadsheets879Not measuredOnly Grok 4.3 measured
Finance Agent (Vals AI)37.7%41.3%Inkling Small
Tax Agent Bench (Vals AI)6.2%15.4%Inkling Small
Legal Research Bench (Vals AI)15.4%25.5%Inkling Small
Harvey's Legal Agent Benchmark (Vals AI)Not measured2.9%Only Inkling Small measured
Excel Modeling Benchmark (Vals AI)18.4%31.8%Inkling Small
τ²-Bench Telecom97.7%Not measuredOnly Grok 4.3 measured
Vending-Bench 2$35Not measuredOnly Grok 4.3 measured
LMArena Search1166Not measuredOnly Grok 4.3 measured
Neither model has a result on the other 23 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index45
Reasoning benchmarks for Grok 4.3 and Inkling Small
BenchmarkGrok 4.3Inkling SmallLeader
GPQA Diamond91.4%83.6%Grok 4.3
MMMU Pro (Vals AI)83.1%Not measuredOnly Grok 4.3 measured
GPQA Diamond (Artificial Analysis run)90.1%89.5%Grok 4.3
Humanity's Last Exam (Artificial Analysis run)37.2%33.3%Grok 4.3
GPQA Diamond (Epoch AI run)88.8%88.5%Grok 4.3
ARC-AGINot measured84.0%Only Inkling Small measured
ARC-AGI-2Not measured40.1%Only Inkling Small measured
Chess puzzles18.0%Not measuredOnly Grok 4.3 measured
Mystery game puzzlesNot measured6.0%Only Inkling Small measured
LMArena Text: hard prompts13961423Inkling Small
LMArena Text: expert13841441Inkling Small
LMArena Text: hard prompts in English14021429Inkling Small
LMArena Vision: diagrams12411251Inkling Small
LMArena Vision: homework12411257Inkling Small
Neither model has a result on the other 8 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index24
Math benchmarks for Grok 4.3 and Inkling Small
BenchmarkGrok 4.3Inkling SmallLeader
OTIS Mock AIME93.3%90.0%Grok 4.3
FrontierMath, tiers 1 to 342.8%46.3%Inkling Small
FrontierMath, tier 414.6%17.1%Inkling Small
ProofBench11.0%6.0%Grok 4.3
LMArena Text: math13871459Inkling Small
LMArena Text: mathematical work13961441Inkling Small
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 4.3 and Inkling Small
BenchmarkGrok 4.3Inkling SmallLeader
MMLU Pro85.8%85.6%Grok 4.3
LegalBench (Vals AI)84.5%83.0%Grok 4.3
CaseLaw (Vals AI)79.3%Not measuredOnly Grok 4.3 measured
CorpFin (Vals AI)68.5%69.6%Inkling Small
TaxEval (Vals AI)70.8%75.5%Inkling Small
MortgageTax (Vals AI)48.3%62.3%Inkling Small
MedCode (Vals AI)38.1%37.9%Grok 4.3
SimpleQA Verified33.2%19.1%Grok 4.3
LMArena Text: science13991428Inkling Small
LMArena Text: medicine and healthcare13841413Inkling Small
LMArena Text: legal and government13861415Inkling Small
LMArena Text: business and finance13811413Inkling Small
Neither model has a result on the other 6 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
Web design benchmarks for Grok 4.3 and Inkling Small
BenchmarkGrok 4.3Inkling SmallLeader
Design Arena: websites1196Not measuredOnly Grok 4.3 measured
Design Arena: UI components1190Not measuredOnly Grok 4.3 measured
Design Arena: game dev1173Not measuredOnly Grok 4.3 measured
Design Arena: data viz1179Not measuredOnly Grok 4.3 measured
Design Arena: 3D1124Not measuredOnly Grok 4.3 measured
Design Arena: all code categories1186Not measuredOnly Grok 4.3 measured
Design Arena: SVG1080Not measuredOnly Grok 4.3 measured
Design Arena: ASCII art1125Not measuredOnly Grok 4.3 measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index622
General benchmarks for Grok 4.3 and Inkling Small
BenchmarkGrok 4.3Inkling SmallLeader
Vals IndexNot measured27.6%Only Inkling Small measured
Public Benefits Bench (Vals AI)51.7%59.4%Inkling Small
SAGE (Vals AI)19.7%32.7%Inkling Small
MedScribe (Vals AI)74.4%84.1%Inkling Small
Vals Multimodal Index43.3%50.0%Inkling Small
IFBench83.3%Not measuredOnly Grok 4.3 measured
Long context reasoning (AA-LCR)75.0%75.7%Inkling Small
DTBench90.7%Not measuredOnly Grok 4.3 measured
LMCA38.3%Not measuredOnly Grok 4.3 measured
LMArena Text13971413Inkling Small
LMArena Text: instruction following13661399Inkling Small
LMArena Text: creative writing13801334Grok 4.3
LMArena Vision12291237Inkling Small
LMArena Text: English14041421Inkling Small
LMArena Text: non-English13851401Inkling Small
LMArena Text: Chinese14221464Inkling Small
LMArena Text: German13951408Inkling Small
LMArena Text: Japanese13791401Inkling Small
LMArena Text: Korean13541367Inkling Small
LMArena Text: French14111435Inkling Small
LMArena Text: Spanish13991422Inkling Small
LMArena Text: Russian13991394Grok 4.3
LMArena Text: Polish13981428Inkling Small
LMArena Text: multi-turn14061416Inkling Small
LMArena Text: longer queries13931402Inkling Small
LMArena Text: writing and language13851357Grok 4.3
LMArena Text: entertainment and media13701352Grok 4.3
LMArena Vision: English12351243Inkling Small
LMArena Vision: Chinese12571292Inkling Small
LMArena Vision: reading text12351243Inkling Small
LMArena Vision: humor12221207Grok 4.3
LMArena Vision: recognizing things1217Not measuredOnly Grok 4.3 measured
LMArena Vision: creative writing12371205Grok 4.3
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 Grok 4.3 and Inkling Small
BenchmarkGrok 4.3Inkling SmallLeader
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 4.3$0.0025Fits in one request
Inkling Small$0.0010Fits in one request

Inkling Small costs less

Repository review

50K input + 3K output tokens

Grok 4.3$0.070Fits in one request
Inkling Small$0.026Fits in one request

Inkling Small costs less

Agent loop

200K input + 10K output tokens

Grok 4.3$0.275Fits in one request
Inkling Small$0.102Fits in one request

Inkling Small 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 4.3 and Inkling Small
SpecificationSpaceXAI Grok 4.3Thinking Machines Inkling Small
MakerxAIThinking Machines
WeightsNo public weights listedOpen weights
ReleasedApril 30, 2026July 30, 2026
Context window1M524K
Input $/Mtok$1.25$0.45
Output $/Mtok$2.50$1.20
Coding index37.427.3
Independent measurements behind it34
Cost per solved task$0.31$0.16
SourceOpenRouter listingOpenRouter listing

Questions

Is Grok 4.3 better than Inkling Small for coding?

Pick Grok 4.3 for coding: it scores 37.4 on the Vibe Coding Index against 27.3 for Inkling Small, though on 3 benchmarks against 4. Pick Inkling Small for output tokens 2.1x cheaper ($1.20 vs $2.50 per million) and a lower cost per solved task ($0.16 against $0.31).

Which is cheaper, Grok 4.3 or Inkling Small?

Grok 4.3 costs $1.25 per million input tokens and $2.50 per million output tokens; Inkling Small costs $0.45 and $1.20. Per solved SWE-bench Verified task, Grok 4.3 costs $0.31 and Inkling Small $0.16.

Which has the bigger context window, Grok 4.3 or Inkling Small?

Grok 4.3, with 1M tokens against 524K.

How many benchmarks is the Grok 4.3 vs Inkling Small comparison based on?

75 benchmarks have a result for both models as of October 22, 2026. Grok 4.3's coding index rests on 3 independent benchmarks and Inkling Small's on 4. 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/grok-4-3-vs-thinkingmachines-inkling-small">LLMBenchmark.ai, Grok 4.3 vs Inkling Small</a></p>