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Grok 4.5 vs Inkling

Grok 4.5 leads Inkling on coding, 58.6 to 31.5 on the Vibe Coding Index, and Inkling costs 1.5x less per output token ($4.05 vs $6.00 per million). Updated October 22, 2026; 97 benchmarks have a result for both.

Replace Grok 4.5 Replace Inkling
Grok 4.5xAI
Coding
58.6
Overall
62.1
Output $/M
$6.00
87
T InklingThinking Machines
Coding
31.5
Overall
46.5
Output $/M
$4.05
9
vs boards won of 97 shared, 1 tied

Grok 4.5 or Inkling: which to pick

Pick Grok 4.5 for coding: it scores 58.6 on the Vibe Coding Index against 31.5 for Inkling.

Pick Inkling for output tokens 1.5x cheaper ($4.05 vs $6.00 per million) and a larger context window (524K against 500K tokens).

Model AGrok 4.5xAI58.6/1006 independent benchmarks$0.62 per solved taskModel BInklingThinking Machines31.5/1006 independent benchmarks$0.76 per solved task
Shared results
97
Grok 4.5 only
26
Inkling only
5
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
Grok 4.5 58.6 from 6 benchmarks, Inkling 31.5 from 6 benchmarks.
Widest category
Coding, 18.6 points apart on average over 21 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): Grok 4.5 69.0% against Inkling 19.2%, 49.8 points apart on a 0 to 100 scale.
Output price
Grok 4.5 $6.00 against Inkling $4.05 per million output tokens, 1.5x apart.
Context window
Grok 4.5 takes 500K tokens, Inkling 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 4.5BarsInklingTies
Coding2001 tie
Intelligence20
Agentic work110
Reasoning112
Math51
Knowledge74
Web design90
General222
All shared boards8791 tie
CodingLike-for-likeSix of these boards feed the Vibe Coding Index200
Coding benchmarks for Grok 4.5 and Inkling
BenchmarkGrok 4.5InklingLeader
LiveBench coding94.3%64.0%Grok 4.5
LMArena WebDev15531414Grok 4.5
AA Coding Index72.452.1Grok 4.5
LiveCodeBench (Vals AI)87.3%85.5%Grok 4.5
SWE-bench Verified (Vals AI)86.6%77.6%Grok 4.5
Terminal-Bench 4 (Vals AI)8.6%0.5%Grok 4.5
Vibe Code Bench (Vals AI)69.0%19.2%Grok 4.5
Code migration (Vals AI)36.6%11.8%Grok 4.5
ProgramBench (Vals AI)0.0%0.0%Tie
IOI (Vals AI)40.6%14.9%Grok 4.5
Terminal-Bench 2.1 (Vals AI)67.8%47.6%Grok 4.5
Vibe Code Bench 1-100 (Vals AI)Not measured7.3%Only Inkling measured
SkillsBench (Vals AI)66.0%26.1%Grok 4.5
CyberBench (Vals AI)71.0%66.8%Grok 4.5
SciCode55.0%47.0%Grok 4.5
FrontierCode42.4%14.0%Grok 4.5
FrontierSWENot measured4.1%Only Inkling measured
WeirdML46.4%32.3%Grok 4.5
ALE-Bench1309.3946.0Grok 4.5
LMArena Text: coding14741466Grok 4.5
LMArena Text: software and IT14711465Grok 4.5
LMArena WebDev: React15561404Grok 4.5
LMArena WebDev: HTML15671399Grok 4.5
LMArena WebDev: from an image1562Not measuredOnly Grok 4.5 measured
SciCode6.5%Not measuredOnly Grok 4.5 measured
Neither model has a result on the other 14 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Grok 4.5 and Inkling
BenchmarkGrok 4.5InklingLeader
AA Intelligence Index38.825.0Grok 4.5
Epoch Capabilities Index154.1148.4Grok 4.5
Agentic workLike-for-likePublic boards, shown as published, kept out of the index110
Agentic work benchmarks for Grok 4.5 and Inkling
BenchmarkGrok 4.5InklingLeader
AA Agentic Index41.222.5Grok 4.5
Design Arena: agents building web apps12181196Grok 4.5
Design Arena: agents building full-stack apps1249Not measuredOnly Grok 4.5 measured
Design Arena: agents building mobile apps1220Not measuredOnly Grok 4.5 measured
Design Arena: agents building Android apps1236Not measuredOnly Grok 4.5 measured
Design Arena: agents building Godot games1229Not measuredOnly Grok 4.5 measured
Design Arena: agents building games1236Not measuredOnly Grok 4.5 measured
Design Arena: HTML slides1205Not measuredOnly Grok 4.5 measured
Design Arena: PowerPoint slides1230Not measuredOnly Grok 4.5 measured
LiveBench research85.9%59.9%Grok 4.5
LiveBench browser44.0%16.0%Grok 4.5
LiveBench long agentic27.9%14.1%Grok 4.5
SREBench (Vals AI)0.8%0.0%Grok 4.5
Finance Agent (Vals AI)48.4%46.6%Grok 4.5
Tax Agent Bench (Vals AI)24.9%15.3%Grok 4.5
Legal Research Bench (Vals AI)38.0%28.4%Grok 4.5
Harvey's Legal Agent Benchmark (Vals AI)Not measured3.8%Only Inkling measured
Excel Modeling Benchmark (Vals AI)52.9%38.4%Grok 4.5
Time Horizon Index (Vals AI)6.3%Not measuredOnly Grok 4.5 measured
APEX-Agents56.2%33.8%Grok 4.5
PostTrainBench23.4%Not measuredOnly Grok 4.5 measured
Vending-Bench 2$3,887Not measuredOnly Grok 4.5 measured
LMArena Search1216Not measuredOnly Grok 4.5 measured
Neither model has a result on the other 18 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index112
Reasoning benchmarks for Grok 4.5 and Inkling
BenchmarkGrok 4.5InklingLeader
GPQA Diamond92.9%87.1%Grok 4.5
LiveBench reasoning87.2%78.3%Grok 4.5
MMMU Pro (Vals AI)61.8%78.5%Inkling
GPQA Diamond (Artificial Analysis run)93.1%87.2%Grok 4.5
Humanity's Last Exam (Artificial Analysis run)42.7%31.9%Grok 4.5
GPQA Diamond (Epoch AI run)93.4%88.3%Grok 4.5
ARC-AGI87.2%79.5%Grok 4.5
ARC-AGI-252.6%36.5%Grok 4.5
SimpleBench70.0%50.0%Grok 4.5
Chess puzzles35.0%21.0%Grok 4.5
LMArena Text: hard prompts14621451Grok 4.5
LMArena Text: expert14651466Inkling
LMArena Text: hard prompts in English14641448Grok 4.5
LMArena Vision: diagrams1304Not measuredOnly Grok 4.5 measured
LMArena Vision: homework1295Not measuredOnly Grok 4.5 measured
Kagi LLM Benchmark83.5%Not measuredOnly Grok 4.5 measured
Neither model has a result on the other 6 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index51
Math benchmarks for Grok 4.5 and Inkling
BenchmarkGrok 4.5InklingLeader
OTIS Mock AIME97.8%88.9%Grok 4.5
FrontierMath, tiers 1 to 357.2%33.3%Grok 4.5
FrontierMath, tier 424.4%4.9%Grok 4.5
ProofBench31.0%0.0%Grok 4.5
LMArena Text: math14601479Inkling
LMArena Text: mathematical work14821460Grok 4.5
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index74
Knowledge benchmarks for Grok 4.5 and Inkling
BenchmarkGrok 4.5InklingLeader
MMLU Pro89.2%86.3%Grok 4.5
LegalBench (Vals AI)86.0%83.0%Grok 4.5
CorpFin (Vals AI)67.4%68.6%Inkling
TaxEval (Vals AI)71.7%75.3%Inkling
MortgageTax (Vals AI)61.8%64.0%Inkling
MedCode (Vals AI)43.3%41.2%Grok 4.5
SimpleQA Verified48.3%40.3%Grok 4.5
LMArena Text: science14641455Grok 4.5
LMArena Text: medicine and healthcare14401447Inkling
LMArena Text: legal and government14631448Grok 4.5
LMArena Text: business and finance14411438Grok 4.5
FACTS Benchmark Suite50.2%Not measuredOnly Grok 4.5 measured
Neither model has a result on the other 6 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index90
Web design benchmarks for Grok 4.5 and Inkling
BenchmarkGrok 4.5InklingLeader
Design Arena: websites12811224Grok 4.5
Design Arena: UI components12801198Grok 4.5
Design Arena: game dev12641165Grok 4.5
Design Arena: data viz12661156Grok 4.5
Design Arena: 3D12571160Grok 4.5
Design Arena: all code categories12751205Grok 4.5
Design Arena: SVG12151108Grok 4.5
Design Arena: ASCII art12561089Grok 4.5
LiveBench design78.1%58.3%Grok 4.5
GeneralLike-for-likePublic boards, shown as published, kept out of the index222
General benchmarks for Grok 4.5 and Inkling
BenchmarkGrok 4.5InklingLeader
Vals IndexNot measured29.0%Only Inkling measured
LiveBench data analysis73.0%72.8%Grok 4.5
Public Benefits Bench (Vals AI)Not measured58.5%Only Inkling measured
SAGE (Vals AI)35.0%36.5%Inkling
MedScribe (Vals AI)86.9%85.4%Grok 4.5
Vals Multimodal Index63.4%49.4%Grok 4.5
Long context reasoning (AA-LCR)79.3%77.3%Grok 4.5
DTBench96.5%87.5%Grok 4.5
LMCA45.2%37.6%Grok 4.5
Surface Evolver Bench74.4%Not measuredOnly Grok 4.5 measured
Furniture assembly22.5%Not measuredOnly Grok 4.5 measured
LMArena Text14481442Grok 4.5
LMArena Text: instruction following14451425Grok 4.5
LMArena Text: creative writing14421390Grok 4.5
LMArena Vision1287Not measuredOnly Grok 4.5 measured
LMArena Text: English14531442Grok 4.5
LMArena Text: non-English14401434Grok 4.5
LMArena Text: Chinese14951493Grok 4.5
LMArena Text: German14481445Grok 4.5
LMArena Text: Japanese14301429Grok 4.5
LMArena Text: Korean14061403Grok 4.5
LMArena Text: French14571455Grok 4.5
LMArena Text: Spanish14511449Grok 4.5
LMArena Text: Russian14491430Grok 4.5
LMArena Text: Polish14321450Inkling
LMArena Text: multi-turn14561437Grok 4.5
LMArena Text: longer queries14621435Grok 4.5
LMArena Text: writing and language14451404Grok 4.5
LMArena Text: entertainment and media14341394Grok 4.5
LMArena Vision: English1285Not measuredOnly Grok 4.5 measured
LMArena Vision: Chinese1345Not measuredOnly Grok 4.5 measured
LMArena Vision: reading text1293Not measuredOnly Grok 4.5 measured
LMArena Vision: humor1276Not measuredOnly Grok 4.5 measured
LMArena Vision: creative writing1293Not measuredOnly Grok 4.5 measured
LMArena Document1452Not measuredOnly Grok 4.5 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 Grok 4.5 and Inkling
BenchmarkGrok 4.5InklingLeader
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 4.5$0.0050Fits in one request
Inkling$0.0030Fits in one request

Inkling costs less

Repository review

50K input + 3K output tokens

Grok 4.5$0.118Fits in one request
Inkling$0.061Fits in one request

Inkling costs less

Agent loop

200K input + 10K output tokens

Grok 4.5$0.460Fits in one request
Inkling$0.235Fits in one request

Inkling 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 4.5 and Inkling
SpecificationSpaceXAI Grok 4.5Thinking Machines Inkling
MakerxAIThinking Machines
WeightsNo public weights listedOpen weights
ReleasedJuly 8, 2026July 17, 2026
Context window500K524K
Input $/Mtok$2.00$0.975
Output $/Mtok$6.00$4.05
Coding index58.631.5
Independent measurements behind it66
Cost per solved task$0.62$0.76
SourceOpenRouter listingOpenRouter listing

Questions

Is Grok 4.5 better than Inkling for coding?

Pick Grok 4.5 for coding: it scores 58.6 on the Vibe Coding Index against 31.5 for Inkling. Pick Inkling for output tokens 1.5x cheaper ($4.05 vs $6.00 per million) and a larger context window (524K against 500K tokens).

Which is cheaper, Grok 4.5 or Inkling?

Grok 4.5 costs $2.00 per million input tokens and $6.00 per million output tokens; Inkling costs $0.975 and $4.05. Per solved SWE-bench Verified task, Grok 4.5 costs $0.62 and Inkling $0.76.

Which has the bigger context window, Grok 4.5 or Inkling?

Inkling, with 524K tokens against 500K.

How many benchmarks is the Grok 4.5 vs Inkling comparison based on?

97 benchmarks have a result for both models as of October 22, 2026. Grok 4.5's coding index rests on 6 independent benchmarks and Inkling's on 6. 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-4-5-vs-thinkingmachines-inkling">LLMBenchmark.ai, Grok 4.5 vs Inkling</a></p>