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Gemini 3.1 Flash Lite Preview vs Grok 4.6

Grok 4.6 leads Gemini 3.1 Flash Lite Preview on coding, 65.7 to 22.7 on the Vibe Coding Index, and Gemini 3.1 Flash Lite Preview costs 4.0x less per output token ($1.50 vs $6.00 per million). Updated October 21, 2026; 71 benchmarks have a result for both.

Replace Gemini 3.1 Flash Lite Preview Replace Grok 4.6
Gemini 3.1 Flash Lite PreviewGoogle
Coding
22.7
Overall
36.6
Output $/M
$1.50
11
Grok 4.6xAI
Coding
65.7
Overall
67.4
Output $/M
$6.00
60
vs boards won of 71 shared

Gemini 3.1 Flash Lite Preview or Grok 4.6: which to pick

Pick Grok 4.6 for coding: it scores 65.7 on the Vibe Coding Index against 22.7 for Gemini 3.1 Flash Lite Preview.

Pick Gemini 3.1 Flash Lite Preview for output tokens 4.0x cheaper ($1.50 vs $6.00 per million) and a lower cost per solved task ($0.18 against $0.82).

Model AGemini 3.1 Flash Lite PreviewGoogle22.7/1003 independent benchmarks$0.18 per solved taskModel BGrok 4.6xAI65.7/1006 independent benchmarks$0.82 per solved task
Shared results
71
Gemini 3.1 Flash Lite Preview only
8
Grok 4.6 only
52
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
Gemini 3.1 Flash Lite Preview 22.7 from 3 benchmarks, Grok 4.6 65.7 from 6 benchmarks.
Widest category
Agentic work, 40.8 points apart on average over 5 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): Gemini 3.1 Flash Lite Preview 0.0% against Grok 4.6 76.2%, 76.2 points apart on a 0 to 100 scale.
Output price
Gemini 3.1 Flash Lite Preview $1.50 against Grok 4.6 $6.00 per million output tokens, 4.0x apart.
Context window
Gemini 3.1 Flash Lite Preview takes 1.05M tokens, Grok 4.6 500K.

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
CategoryGemini 3.1 Flash Lite PreviewBarsGrok 4.6Ties
Coding014
Intelligence01
Agentic work05
Reasoning06
Math11
Knowledge46
Web design08
General619
All shared boards1160
CodingLike-for-likeSix of these boards feed the Vibe Coding Index014
Coding benchmarks for Gemini 3.1 Flash Lite Preview and Grok 4.6
BenchmarkGemini 3.1 Flash Lite PreviewGrok 4.6Leader
LiveBench codingNot measured89.1%Only Grok 4.6 measured
LMArena WebDev12571617Grok 4.6
AA Coding Index34.776.8Grok 4.6
LiveCodeBench (Vals AI)80.1%88.2%Grok 4.6
SWE-bench Verified (Vals AI)62.8%95.6%Grok 4.6
Terminal-Bench 4 (Vals AI)Not measured17.2%Only Grok 4.6 measured
Vibe Code Bench (Vals AI)0.0%76.2%Grok 4.6
Code migration (Vals AI)4.6%44.6%Grok 4.6
ProgramBench (Vals AI)0.0%1.0%Grok 4.6
IOI (Vals AI)Not measured47.6%Only Grok 4.6 measured
Terminal-Bench 2.1 (Vals AI)34.1%78.3%Grok 4.6
Vibe Code Bench 1-100 (Vals AI)Not measured14.8%Only Grok 4.6 measured
SkillsBench (Vals AI)Not measured55.8%Only Grok 4.6 measured
CyberBench (Vals AI)Not measured67.7%Only Grok 4.6 measured
SciCodeNot measured56.5%Only Grok 4.6 measured
FrontierCodeNot measured48.0%Only Grok 4.6 measured
FrontierSWENot measured25.3%Only Grok 4.6 measured
WeirdMLNot measured67.3%Only Grok 4.6 measured
ALE-Bench797.71508.1Grok 4.6
LMArena Text: coding14001466Grok 4.6
LMArena Text: software and IT14131457Grok 4.6
LMArena WebDev: React12451631Grok 4.6
LMArena WebDev: HTML12761597Grok 4.6
LMArena WebDev: from an image13361603Grok 4.6
SciCode4.6%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 14 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
Intelligence benchmarks for Gemini 3.1 Flash Lite Preview and Grok 4.6
BenchmarkGemini 3.1 Flash Lite PreviewGrok 4.6Leader
AA Intelligence Index15.644.3Grok 4.6
Epoch Capabilities IndexNot measured156.6Only Grok 4.6 measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index05
Agentic work benchmarks for Gemini 3.1 Flash Lite Preview and Grok 4.6
BenchmarkGemini 3.1 Flash Lite PreviewGrok 4.6Leader
AA Agentic Index1.653.0Grok 4.6
Design Arena: agents building web appsNot measured1248Only Grok 4.6 measured
Design Arena: agents building full-stack appsNot measured1264Only Grok 4.6 measured
Design Arena: agents building mobile appsNot measured1236Only Grok 4.6 measured
Design Arena: agents building Android appsNot measured1297Only Grok 4.6 measured
Design Arena: agents building Godot gamesNot measured1276Only Grok 4.6 measured
Design Arena: agents building gamesNot measured1208Only Grok 4.6 measured
Design Arena: HTML slidesNot measured1249Only Grok 4.6 measured
Design Arena: PowerPoint slidesNot measured1241Only Grok 4.6 measured
LiveBench researchNot measured84.5%Only Grok 4.6 measured
LiveBench browserNot measured64.0%Only Grok 4.6 measured
LiveBench long agenticNot measured40.7%Only Grok 4.6 measured
Finance Agent (Vals AI)30.0%53.7%Grok 4.6
Tax Agent Bench (Vals AI)3.1%33.1%Grok 4.6
Legal Research Bench (Vals AI)3.4%48.1%Grok 4.6
Excel Modeling Benchmark (Vals AI)8.6%62.7%Grok 4.6
BioMysteryBench (Vals AI)Not measured72.2%Only Grok 4.6 measured
Terminal-Bench-Science (Vals AI)Not measured11.4%Only Grok 4.6 measured
Vals Science IndexNot measured38.1%Only Grok 4.6 measured
Time Horizon Index (Vals AI)Not measured5.8%Only Grok 4.6 measured
APEX-AgentsNot measured65.3%Only Grok 4.6 measured
Vending-Bench 2Not measured$9,047Only Grok 4.6 measured
Neither model has a result on the other 19 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index06
Reasoning benchmarks for Gemini 3.1 Flash Lite Preview and Grok 4.6
BenchmarkGemini 3.1 Flash Lite PreviewGrok 4.6Leader
GPQA Diamond81.1%94.7%Grok 4.6
LiveBench reasoningNot measured91.2%Only Grok 4.6 measured
MysteryMechanism (Vals AI)Not measured30.6%Only Grok 4.6 measured
MMMU Pro (Vals AI)82.5%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
GPQA Diamond (Artificial Analysis run)Not measured94.9%Only Grok 4.6 measured
Humanity's Last Exam (Artificial Analysis run)Not measured44.1%Only Grok 4.6 measured
GPQA Diamond (Epoch AI run)Not measured94.0%Only Grok 4.6 measured
ARC-AGINot measured87.5%Only Grok 4.6 measured
ARC-AGI-2Not measured67.1%Only Grok 4.6 measured
SimpleBenchNot measured75.9%Only Grok 4.6 measured
Chess puzzlesNot measured33.0%Only Grok 4.6 measured
Mystery game puzzlesNot measured34.0%Only Grok 4.6 measured
EBR-benchNot measured30.5%Only Grok 4.6 measured
LMArena Text: hard prompts14071448Grok 4.6
LMArena Text: expert13981469Grok 4.6
LMArena Text: hard prompts in English14031445Grok 4.6
LMArena Vision: diagrams12421285Grok 4.6
LMArena Vision: homework12711283Grok 4.6
Neither model has a result on the other 4 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index11
Math benchmarks for Gemini 3.1 Flash Lite Preview and Grok 4.6
BenchmarkGemini 3.1 Flash Lite PreviewGrok 4.6Leader
AIME83.3%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
OTIS Mock AIMENot measured99.2%Only Grok 4.6 measured
FrontierMath, tiers 1 to 3Not measured66.0%Only Grok 4.6 measured
FrontierMath, tier 4Not measured31.7%Only Grok 4.6 measured
ProofBenchNot measured51.0%Only Grok 4.6 measured
LMArena Text: math14281417Gemini 3.1 Flash Lite Preview
LMArena Text: mathematical work14171464Grok 4.6
Neither model has a result on the other 6 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index46
Knowledge benchmarks for Gemini 3.1 Flash Lite Preview and Grok 4.6
BenchmarkGemini 3.1 Flash Lite PreviewGrok 4.6Leader
MMLU Pro86.2%89.4%Grok 4.6
LegalBench (Vals AI)83.8%86.3%Grok 4.6
CaseLaw (Vals AI)55.0%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
CorpFin (Vals AI)59.4%66.2%Grok 4.6
TaxEval (Vals AI)71.8%71.1%Gemini 3.1 Flash Lite Preview
MortgageTax (Vals AI)68.0%64.2%Gemini 3.1 Flash Lite Preview
MedCode (Vals AI)47.6%44.7%Gemini 3.1 Flash Lite Preview
SimpleQA VerifiedNot measured49.3%Only Grok 4.6 measured
LMArena Text: science14251437Grok 4.6
LMArena Text: medicine and healthcare14281420Gemini 3.1 Flash Lite Preview
LMArena Text: legal and government14181429Grok 4.6
LMArena Text: business and finance13891416Grok 4.6
FACTS Benchmark Suite51.4%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 5 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index08
Web design benchmarks for Gemini 3.1 Flash Lite Preview and Grok 4.6
BenchmarkGemini 3.1 Flash Lite PreviewGrok 4.6Leader
Design Arena: websites10831289Grok 4.6
Design Arena: UI components10721295Grok 4.6
Design Arena: game dev10291296Grok 4.6
Design Arena: data viz10451282Grok 4.6
Design Arena: 3D10481277Grok 4.6
Design Arena: all code categories10721292Grok 4.6
Design Arena: SVG10521239Grok 4.6
Design Arena: ASCII art11671278Grok 4.6
LiveBench designNot measured79.8%Only Grok 4.6 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index619
General benchmarks for Gemini 3.1 Flash Lite Preview and Grok 4.6
BenchmarkGemini 3.1 Flash Lite PreviewGrok 4.6Leader
LiveBench data analysisNot measured75.3%Only Grok 4.6 measured
Public Benefits Bench (Vals AI)Not measured66.8%Only Grok 4.6 measured
SAGE (Vals AI)49.5%28.9%Gemini 3.1 Flash Lite Preview
MedScribe (Vals AI)63.9%86.5%Grok 4.6
Vals Multimodal Index41.4%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Long context reasoning (AA-LCR)Not measured81.0%Only Grok 4.6 measured
DTBenchNot measured97.3%Only Grok 4.6 measured
LMCANot measured48.5%Only Grok 4.6 measured
Furniture assemblyNot measured40.0%Only Grok 4.6 measured
LMArena Text14161429Grok 4.6
LMArena Text: instruction following13771431Grok 4.6
LMArena Text: creative writing14011426Grok 4.6
LMArena Vision12401263Grok 4.6
LMArena Text: English14141433Grok 4.6
LMArena Text: non-English14101420Grok 4.6
LMArena Text: Chinese14601476Grok 4.6
LMArena Text: German14301426Gemini 3.1 Flash Lite Preview
LMArena Text: Japanese14131378Gemini 3.1 Flash Lite Preview
LMArena Text: Korean13921391Gemini 3.1 Flash Lite Preview
LMArena Text: French14241455Grok 4.6
LMArena Text: Spanish14211414Gemini 3.1 Flash Lite Preview
LMArena Text: Russian14201421Grok 4.6
LMArena Text: Polish14431430Gemini 3.1 Flash Lite Preview
LMArena Text: multi-turn14171425Grok 4.6
LMArena Text: longer queries13941456Grok 4.6
LMArena Text: writing and language14081429Grok 4.6
LMArena Text: entertainment and media13861421Grok 4.6
LMArena Vision: English12321270Grok 4.6
LMArena Vision: Chinese12781289Grok 4.6
LMArena Vision: reading text12461272Grok 4.6
LMArena Vision: humor12661270Grok 4.6
LMArena Vision: captioning1259Not measuredOnly Gemini 3.1 Flash Lite Preview measured
LMArena Vision: recognizing things1308Not measuredOnly Gemini 3.1 Flash Lite Preview measured
LMArena Vision: creative writing12481262Grok 4.6
LMArena DocumentNot measured1452Only Grok 4.6 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 Gemini 3.1 Flash Lite Preview and Grok 4.6
BenchmarkGemini 3.1 Flash Lite PreviewGrok 4.6Leader
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

Gemini 3.1 Flash Lite Preview$0.0010Fits in one request
Grok 4.6$0.0050Fits in one request

Gemini 3.1 Flash Lite Preview costs less

Repository review

50K input + 3K output tokens

Gemini 3.1 Flash Lite Preview$0.017Fits in one request
Grok 4.6$0.118Fits in one request

Gemini 3.1 Flash Lite Preview costs less

Agent loop

200K input + 10K output tokens

Gemini 3.1 Flash Lite Preview$0.065Fits in one request
Grok 4.6$0.460Fits in one request

Gemini 3.1 Flash Lite Preview 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 Gemini 3.1 Flash Lite Preview and Grok 4.6
SpecificationGoogle Gemini 3.1 Flash Lite PreviewSpaceXAI Grok 4.6
MakerGooglexAI
WeightsNo public weights listedNo public weights listed
ReleasedMarch 3, 2026August 12, 2026
Context window1.05M500K
Input $/Mtok$0.25$2.00
Output $/Mtok$1.50$6.00
Coding index22.765.7
Independent measurements behind it36
Cost per solved task$0.18$0.82
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemini 3.1 Flash Lite Preview better than Grok 4.6 for coding?

Pick Grok 4.6 for coding: it scores 65.7 on the Vibe Coding Index against 22.7 for Gemini 3.1 Flash Lite Preview. Pick Gemini 3.1 Flash Lite Preview for output tokens 4.0x cheaper ($1.50 vs $6.00 per million) and a lower cost per solved task ($0.18 against $0.82).

Which is cheaper, Gemini 3.1 Flash Lite Preview or Grok 4.6?

Gemini 3.1 Flash Lite Preview costs $0.25 per million input tokens and $1.50 per million output tokens; Grok 4.6 costs $2.00 and $6.00. Per solved SWE-bench Verified task, Gemini 3.1 Flash Lite Preview costs $0.18 and Grok 4.6 $0.82.

Which has the bigger context window, Gemini 3.1 Flash Lite Preview or Grok 4.6?

Gemini 3.1 Flash Lite Preview, with 1.05M tokens against 500K.

How many benchmarks is the Gemini 3.1 Flash Lite Preview vs Grok 4.6 comparison based on?

71 benchmarks have a result for both models as of October 21, 2026. Gemini 3.1 Flash Lite Preview's coding index rests on 3 independent benchmarks and Grok 4.6's on 6. Where only one model has a result, the page says so instead of naming a winner.

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<iframe src="https://llmbenchmark.ai/embed/compare/gemini-3-1-flash-lite-preview-vs-grok-4-6" title="Gemini 3.1 Flash Lite Preview vs Grok 4.6, LLMBenchmark.ai" width="100%" height="360" style="border:0;max-width:100%" loading="lazy"></iframe>
<p style="font:13px/1.4 sans-serif;margin:6px 0 0">Source: <a href="https://llmbenchmark.ai/compare/gemini-3-1-flash-lite-preview-vs-grok-4-6">LLMBenchmark.ai, Gemini 3.1 Flash Lite Preview vs Grok 4.6</a></p>