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GPT-4.1 vs Grok 4.3

Updated October 21, 2026. 68 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace GPT-4.1 Replace Grok 4.3
GPT-4.1OpenAI
Coding
46.5
Overall
12.7
Output $/M
$8.00
5
Grok 4.3xAI
Coding
22.5
Overall
24.9
Output $/M
$2.50
63
vs boards won of 68 shared

Decision reading

Pick GPT-4.1 for coding: it scores 46.5 on the Vibe Coding Index against 22.5 for Grok 4.3.

Pick Grok 4.3 when output tokens cost 3.2x less, or when a solved task costs $0.31 against $0.37.

Model AGPT-4.1OpenAI46.5/1002 independent benchmarks$0.37 per solved taskModel BGrok 4.3xAI22.5/1001 independent benchmark$0.31 per solved task
Shared results
68
GPT-4.1 only
19
Grok 4.3 only
36
Like-for-like categories
8 of 9

Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.

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 46.5 from 2 benchmarks, Grok 4.3 22.5 from 1 benchmark.
Widest category
Agentic work, 50.6 points apart on average over 1 shared benchmark.
Widest single gap
OTIS Mock AIME: GPT-4.1 38.3% against Grok 4.3 93.3%, 55.0 points apart on a 0 to 100 scale.
Output price
GPT-4.1 $8.00 against Grok 4.3 $2.50 per million output tokens, 3.2x apart.
Context window
GPT-4.1 takes 1.05M tokens, Grok 4.3 1M.

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-4.1BarsGrok 4.3Ties
Coding06
Intelligence01
Agentic work01
Reasoning110
Math04
Knowledge38
Web design06
General127
All shared boards563
CodingLike-for-likeFour of these boards feed the Vibe Coding Index06
Coding benchmarks for GPT-4.1 and Grok 4.3
BenchmarkGPT-4.1Grok 4.3Leader
Aider polyglot52.4%Not measuredOnly GPT-4.1 measured
SWE-bench Verified39.6%Not measuredOnly GPT-4.1 measured
SWE-bench Multimodal31.1%Not measuredOnly GPT-4.1 measured
LMArena WebDevNot measured1358Only Grok 4.3 measured
AA Coding IndexNot measured42.2Only Grok 4.3 measured
LiveCodeBench (Vals AI)54.7%84.5%Grok 4.3
SWE-bench Verified (Vals AI)Not measured71.4%Only Grok 4.3 measured
Vibe Code Bench (Vals AI)Not measured19.4%Only Grok 4.3 measured
Code migration (Vals AI)Not measured6.8%Only Grok 4.3 measured
ProgramBench (Vals AI)Not measured0.0%Only Grok 4.3 measured
Terminal-Bench 2.1 (Vals AI)Not measured42.0%Only Grok 4.3 measured
SkillsBench (Vals AI)Not measured40.6%Only Grok 4.3 measured
LiveCodeBench (Artificial Analysis run)45.7%Not measuredOnly GPT-4.1 measured
SciCodeNot measured48.3%Only Grok 4.3 measured
Terminal-Bench Hard (Artificial Analysis run)13.6%37.9%Grok 4.3
WeirdML39.0%49.9%Grok 4.3
ALE-Bench558.1944.2Grok 4.3
LMArena Text: coding13901415Grok 4.3
LMArena Text: software and IT13911416Grok 4.3
LMArena WebDev: ReactNot measured1353Only Grok 4.3 measured
LMArena WebDev: HTMLNot measured1367Only Grok 4.3 measured
LMArena WebDev: from an imageNot measured1375Only Grok 4.3 measured
Neither model has a result on the other 16 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
Intelligence benchmarks for GPT-4.1 and Grok 4.3
BenchmarkGPT-4.1Grok 4.3Leader
AA Intelligence Index12.724.9Grok 4.3
Epoch Capabilities Index136.7Not measuredOnly GPT-4.1 measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index01
Agentic work benchmarks for GPT-4.1 and Grok 4.3
BenchmarkGPT-4.1Grok 4.3Leader
AA Agentic IndexNot measured15.5Only Grok 4.3 measured
Design Arena: agents building web appsNot measured1126Only Grok 4.3 measured
Design Arena: agents building full-stack appsNot measured1006Only Grok 4.3 measured
Design Arena: agents building mobile appsNot measured1059Only Grok 4.3 measured
Design Arena: agents building Android appsNot measured967Only Grok 4.3 measured
Design Arena: agents building Godot gamesNot measured914Only Grok 4.3 measured
Design Arena: agents building gamesNot measured1007Only Grok 4.3 measured
Design Arena: HTML slidesNot measured1008Only Grok 4.3 measured
Design Arena: PowerPoint slidesNot measured1012Only Grok 4.3 measured
Finance Agent (Vals AI)Not measured37.7%Only Grok 4.3 measured
Tax Agent Bench (Vals AI)Not measured6.2%Only Grok 4.3 measured
Legal Research Bench (Vals AI)Not measured15.4%Only Grok 4.3 measured
Excel Modeling Benchmark (Vals AI)Not measured18.4%Only Grok 4.3 measured
τ²-Bench Telecom47.1%97.7%Grok 4.3
Vending-Bench 2Not measured$35Only Grok 4.3 measured
LMArena SearchNot measured1166Only 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 index110
Reasoning benchmarks for GPT-4.1 and Grok 4.3
BenchmarkGPT-4.1Grok 4.3Leader
GPQA Diamond65.4%91.4%Grok 4.3
MMMU Pro (Vals AI)72.4%83.1%Grok 4.3
GPQA Diamond (Artificial Analysis run)66.6%90.1%Grok 4.3
Humanity's Last Exam (Artificial Analysis run)4.2%37.2%Grok 4.3
GPQA Diamond (Epoch AI run)66.9%88.8%Grok 4.3
ARC-AGI5.5%Not measuredOnly GPT-4.1 measured
ARC-AGI-20.4%Not measuredOnly GPT-4.1 measured
SimpleBench27.0%Not measuredOnly GPT-4.1 measured
Chess puzzles3.0%18.0%Grok 4.3
LMArena Text: hard prompts13841396Grok 4.3
LMArena Text: expert13641384Grok 4.3
LMArena Text: hard prompts in English13931402Grok 4.3
LMArena Vision: diagrams12151241Grok 4.3
LMArena Vision: homework12481241GPT-4.1
Neither model has a result on the other 7 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index04
Math benchmarks for GPT-4.1 and Grok 4.3
BenchmarkGPT-4.1Grok 4.3Leader
AIME39.6%Not measuredOnly GPT-4.1 measured
MATH 500 (Vals AI)87.2%Not measuredOnly GPT-4.1 measured
MGSM (Vals AI)87.7%Not measuredOnly GPT-4.1 measured
AA Math Index34.7Not measuredOnly GPT-4.1 measured
AIME 2025 (Artificial Analysis run)34.7%Not measuredOnly GPT-4.1 measured
OTIS Mock AIME38.3%93.3%Grok 4.3
FrontierMath, tiers 1 to 36.0%42.8%Grok 4.3
FrontierMath, tier 4Not measured14.6%Only Grok 4.3 measured
ProofBenchNot measured11.0%Only Grok 4.3 measured
MATH level 583.0%Not measuredOnly GPT-4.1 measured
LMArena Text: math13691387Grok 4.3
LMArena Text: mathematical work13601396Grok 4.3
Neither model has a result on the other 1 board here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index38
Knowledge benchmarks for GPT-4.1 and Grok 4.3
BenchmarkGPT-4.1Grok 4.3Leader
MMLU Pro80.5%85.8%Grok 4.3
LegalBench (Vals AI)83.1%84.5%Grok 4.3
CaseLaw (Vals AI)69.9%79.3%Grok 4.3
CorpFin (Vals AI)63.0%68.5%Grok 4.3
TaxEval (Vals AI)75.1%70.8%GPT-4.1
MortgageTax (Vals AI)65.9%48.3%GPT-4.1
MedQA (Vals AI)91.2%Not measuredOnly GPT-4.1 measured
MedCode (Vals AI)Not measured38.1%Only Grok 4.3 measured
MMLU Pro (Artificial Analysis run)80.6%Not measuredOnly GPT-4.1 measured
SimpleQA Verified31.1%33.2%Grok 4.3
GeoBench72.0%Not measuredOnly GPT-4.1 measured
LMArena Text: science13821399Grok 4.3
LMArena Text: medicine and healthcare13791384Grok 4.3
LMArena Text: legal and government13991386GPT-4.1
LMArena Text: business and finance13691381Grok 4.3
Neither model has a result on the other 2 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index06
Web design benchmarks for GPT-4.1 and Grok 4.3
BenchmarkGPT-4.1Grok 4.3Leader
Design Arena: websites10391196Grok 4.3
Design Arena: UI components10001192Grok 4.3
Design Arena: game dev10801174Grok 4.3
Design Arena: data viz11041180Grok 4.3
Design Arena: 3D8501125Grok 4.3
Design Arena: all code categories10261187Grok 4.3
Design Arena: SVGNot measured1081Only Grok 4.3 measured
Design Arena: ASCII artNot measured1125Only 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 index127
General benchmarks for GPT-4.1 and Grok 4.3
BenchmarkGPT-4.1Grok 4.3Leader
Public Benefits Bench (Vals AI)Not measured51.7%Only Grok 4.3 measured
SAGE (Vals AI)Not measured19.7%Only Grok 4.3 measured
MedScribe (Vals AI)Not measured74.4%Only Grok 4.3 measured
Vals Multimodal IndexNot measured43.3%Only Grok 4.3 measured
IFBench43.0%83.3%Grok 4.3
Long context reasoning (AA-LCR)68.3%75.0%Grok 4.3
DTBench68.3%90.7%Grok 4.3
LMCA25.6%38.3%Grok 4.3
Fiction.LiveBench63.9%Not measuredOnly GPT-4.1 measured
LMArena Text13831397Grok 4.3
LMArena Text: instruction following13671366GPT-4.1
LMArena Text: creative writing13631380Grok 4.3
LMArena Vision12101229Grok 4.3
LMArena Text: English13921404Grok 4.3
LMArena Text: non-English13701385Grok 4.3
LMArena Text: Chinese13821422Grok 4.3
LMArena Text: German13811395Grok 4.3
LMArena Text: Japanese13191379Grok 4.3
LMArena Text: Korean13381354Grok 4.3
LMArena Text: French13821411Grok 4.3
LMArena Text: Spanish13761399Grok 4.3
LMArena Text: Russian13771399Grok 4.3
LMArena Text: Polish13891398Grok 4.3
LMArena Text: multi-turn13971406Grok 4.3
LMArena Text: longer queries13851393Grok 4.3
LMArena Text: writing and language13711385Grok 4.3
LMArena Text: entertainment and media13651370Grok 4.3
LMArena Vision: English12091235Grok 4.3
LMArena Vision: Chinese12261257Grok 4.3
LMArena Vision: reading text12181235Grok 4.3
LMArena Vision: humor11961222Grok 4.3
LMArena Vision: captioning1207Not measuredOnly GPT-4.1 measured
LMArena Vision: recognizing things12081217Grok 4.3
LMArena Vision: creative writing12101237Grok 4.3
Neither model has a result on the other 12 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for GPT-4.1 and Grok 4.3
BenchmarkGPT-4.1Grok 4.3Leader
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$0.0060Fits in one request
Grok 4.3$0.0025Fits in one request

Grok 4.3 costs less

Repository review

50K input + 3K output tokens

GPT-4.1$0.124Fits in one request
Grok 4.3$0.070Fits in one request

Grok 4.3 costs less

Agent loop

200K input + 10K output tokens

GPT-4.1$0.480Fits in one request
Grok 4.3$0.275Fits in one request

Grok 4.3 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 and Grok 4.3
SpecificationOpenAI GPT-4.1SpaceXAI Grok 4.3
MakerOpenAIxAI
WeightsNo public weights listedNo public weights listed
ReleasedApril 14, 2025April 30, 2026
Context window1.05M1M
Input $/Mtok$2.00$1.25
Output $/Mtok$8.00$2.50
Coding index46.522.5
Independent measurements behind it21
Cost per solved task$0.37$0.31
SourceOpenRouter listingOpenRouter listing

Questions

Is GPT-4.1 better than Grok 4.3 for coding?

Pick GPT-4.1 for coding: it scores 46.5 on the Vibe Coding Index against 22.5 for Grok 4.3. Pick Grok 4.3 when output tokens cost 3.2x less, or when a solved task costs $0.31 against $0.37.

Which is cheaper, GPT-4.1 or Grok 4.3?

GPT-4.1 costs $2.00 per million input tokens and $8.00 per million output tokens; Grok 4.3 costs $1.25 and $2.50. Per solved SWE-bench Verified task, GPT-4.1 costs $0.37 and Grok 4.3 $0.31.

Which has the bigger context window, GPT-4.1 or Grok 4.3?

GPT-4.1, with 1.05M tokens against 1M.

How many benchmarks is the GPT-4.1 vs Grok 4.3 comparison based on?

68 benchmarks have a result for both models as of October 21, 2026. GPT-4.1's coding index rests on 2 independent benchmarks and Grok 4.3's on 1. Where only one model has a result, the page says so instead of naming a winner.

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