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Claude Sonnet 4.6 vs Gemini 3.1 Flash Lite Preview

Claude Sonnet 4.6 leads Gemini 3.1 Flash Lite Preview on coding, 57.3 to 22.7 on the Vibe Coding Index, and Gemini 3.1 Flash Lite Preview costs 10.0x less per output token ($1.50 vs $15.00 per million). Updated October 22, 2026; 74 benchmarks have a result for both.

Replace Claude Sonnet 4.6 Replace Gemini 3.1 Flash Lite Preview
Claude Sonnet 4.6Anthropic
Coding
57.3
Overall
60.3
Output $/M
$15.00
66
Gemini 3.1 Flash Lite PreviewGoogle
Coding
22.7
Overall
36.6
Output $/M
$1.50
8
vs boards won of 74 shared

Claude Sonnet 4.6 or Gemini 3.1 Flash Lite Preview: which to pick

Pick Claude Sonnet 4.6 for coding: it scores 57.3 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 10.0x cheaper ($1.50 vs $15.00 per million) and a lower cost per solved task ($0.18 against $1.68).

Model AClaude Sonnet 4.6Anthropic57.3/1005 independent benchmarks$1.68 per solved taskModel BGemini 3.1 Flash Lite PreviewGoogle22.7/1003 independent benchmarks$0.18 per solved task
Shared results
74
Claude Sonnet 4.6 only
44
Gemini 3.1 Flash Lite Preview 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
Claude Sonnet 4.6 57.3 from 5 benchmarks, Gemini 3.1 Flash Lite Preview 22.7 from 3 benchmarks.
Widest category
Agentic work, 32.1 points apart on average over 5 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): Claude Sonnet 4.6 55.8% against Gemini 3.1 Flash Lite Preview 0.0%, 55.8 points apart on a 0 to 100 scale.
Output price
Claude Sonnet 4.6 $15.00 against Gemini 3.1 Flash Lite Preview $1.50 per million output tokens, 10.0x apart.
Context window
Claude Sonnet 4.6 takes 1M tokens, Gemini 3.1 Flash Lite Preview 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
CategoryClaude Sonnet 4.6BarsGemini 3.1 Flash Lite PreviewTies
Coding130
Intelligence10
Agentic work50
Reasoning70
Math30
Knowledge83
Web design80
General215
All shared boards668
CodingLike-for-likeSix of these boards feed the Vibe Coding Index130
Coding benchmarks for Claude Sonnet 4.6 and Gemini 3.1 Flash Lite Preview
BenchmarkClaude Sonnet 4.6Gemini 3.1 Flash Lite PreviewLeader
LiveBench coding66.6%Not measuredOnly Claude Sonnet 4.6 measured
LMArena WebDev15231257Claude Sonnet 4.6
AA Coding Index63.034.7Claude Sonnet 4.6
LiveCodeBench (Vals AI)82.1%80.1%Claude Sonnet 4.6
SWE-bench Verified (Vals AI)77.4%62.8%Claude Sonnet 4.6
Vibe Code Bench (Vals AI)55.8%0.0%Claude Sonnet 4.6
Code migration (Vals AI)39.9%4.6%Claude Sonnet 4.6
ProgramBench (Vals AI)0.5%0.0%Claude Sonnet 4.6
Terminal-Bench 2.1 (Vals AI)57.3%34.1%Claude Sonnet 4.6
SkillsBench (Vals AI)49.0%Not measuredOnly Claude Sonnet 4.6 measured
SciCode50.1%Not measuredOnly Claude Sonnet 4.6 measured
Terminal-Bench Hard (Artificial Analysis run)53.0%Not measuredOnly Claude Sonnet 4.6 measured
Terminal-Bench53.4%Not measuredOnly Claude Sonnet 4.6 measured
FrontierCode24.3%Not measuredOnly Claude Sonnet 4.6 measured
WeirdML66.1%Not measuredOnly Claude Sonnet 4.6 measured
ALE-BenchNot measured797.7Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: coding15031400Claude Sonnet 4.6
LMArena Text: software and IT14911413Claude Sonnet 4.6
LMArena WebDev: React15121245Claude Sonnet 4.6
LMArena WebDev: HTML15271276Claude Sonnet 4.6
LMArena WebDev: from an image15291336Claude Sonnet 4.6
SciCodeNot measured4.6%Only Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 17 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
Intelligence benchmarks for Claude Sonnet 4.6 and Gemini 3.1 Flash Lite Preview
BenchmarkClaude Sonnet 4.6Gemini 3.1 Flash Lite PreviewLeader
AA Intelligence Index30.115.6Claude Sonnet 4.6
Epoch Capabilities Index152.8Not measuredOnly Claude Sonnet 4.6 measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index50
Agentic work benchmarks for Claude Sonnet 4.6 and Gemini 3.1 Flash Lite Preview
BenchmarkClaude Sonnet 4.6Gemini 3.1 Flash Lite PreviewLeader
AA Agentic Index31.81.6Claude Sonnet 4.6
Design Arena: agents building web apps1190Not measuredOnly Claude Sonnet 4.6 measured
Design Arena: agents building full-stack apps1213Not measuredOnly Claude Sonnet 4.6 measured
Design Arena: agents building mobile apps1212Not measuredOnly Claude Sonnet 4.6 measured
Design Arena: agents building Android apps1197Not measuredOnly Claude Sonnet 4.6 measured
Design Arena: agents building Godot games1226Not measuredOnly Claude Sonnet 4.6 measured
Design Arena: agents building games1177Not measuredOnly Claude Sonnet 4.6 measured
LiveBench research63.6%Not measuredOnly Claude Sonnet 4.6 measured
LiveBench browser68.0%Not measuredOnly Claude Sonnet 4.6 measured
LiveBench long agentic23.1%Not measuredOnly Claude Sonnet 4.6 measured
Finance Agent (Vals AI)51.0%30.0%Claude Sonnet 4.6
Tax Agent Bench (Vals AI)25.8%3.1%Claude Sonnet 4.6
Legal Research Bench (Vals AI)38.5%3.4%Claude Sonnet 4.6
Excel Modeling Benchmark (Vals AI)60.2%8.6%Claude Sonnet 4.6
τ²-Bench Telecom79.5%Not measuredOnly Claude Sonnet 4.6 measured
APEX-Agents43.0%Not measuredOnly Claude Sonnet 4.6 measured
OSWorld 2.09.3%Not measuredOnly Claude Sonnet 4.6 measured
DeepResearch Bench54.9%Not measuredOnly Claude Sonnet 4.6 measured
OSWorld72.1%Not measuredOnly Claude Sonnet 4.6 measured
Vending-Bench 2$7,204Not measuredOnly Claude Sonnet 4.6 measured
Neither model has a result on the other 21 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index70
Reasoning benchmarks for Claude Sonnet 4.6 and Gemini 3.1 Flash Lite Preview
BenchmarkClaude Sonnet 4.6Gemini 3.1 Flash Lite PreviewLeader
GPQA Diamond85.6%81.1%Claude Sonnet 4.6
LiveBench reasoning86.4%Not measuredOnly Claude Sonnet 4.6 measured
MMMU Pro (Vals AI)83.6%82.5%Claude Sonnet 4.6
GPQA Diamond (Artificial Analysis run)87.5%Not measuredOnly Claude Sonnet 4.6 measured
Humanity's Last Exam (Artificial Analysis run)33.6%Not measuredOnly Claude Sonnet 4.6 measured
GPQA Diamond (Epoch AI run)87.4%Not measuredOnly Claude Sonnet 4.6 measured
ARC-AGI86.5%Not measuredOnly Claude Sonnet 4.6 measured
ARC-AGI-260.4%Not measuredOnly Claude Sonnet 4.6 measured
Chess puzzles23.0%Not measuredOnly Claude Sonnet 4.6 measured
Mystery game puzzles16.0%Not measuredOnly Claude Sonnet 4.6 measured
LMArena Text: hard prompts14851407Claude Sonnet 4.6
LMArena Text: expert15001398Claude Sonnet 4.6
LMArena Text: hard prompts in English14931403Claude Sonnet 4.6
LMArena Vision: diagrams13061242Claude Sonnet 4.6
LMArena Vision: homework13111271Claude Sonnet 4.6
Neither model has a result on the other 7 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index30
Math benchmarks for Claude Sonnet 4.6 and Gemini 3.1 Flash Lite Preview
BenchmarkClaude Sonnet 4.6Gemini 3.1 Flash Lite PreviewLeader
AIME92.3%83.3%Claude Sonnet 4.6
OTIS Mock AIME85.8%Not measuredOnly Claude Sonnet 4.6 measured
ProofBench45.0%Not measuredOnly Claude Sonnet 4.6 measured
LMArena Text: math14621428Claude Sonnet 4.6
LMArena Text: mathematical work14831417Claude Sonnet 4.6
Neither model has a result on the other 8 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index83
Knowledge benchmarks for Claude Sonnet 4.6 and Gemini 3.1 Flash Lite Preview
BenchmarkClaude Sonnet 4.6Gemini 3.1 Flash Lite PreviewLeader
MMLU Pro87.3%86.2%Claude Sonnet 4.6
LegalBench (Vals AI)82.1%83.8%Gemini 3.1 Flash Lite Preview
CaseLaw (Vals AI)64.0%55.0%Claude Sonnet 4.6
CorpFin (Vals AI)65.3%59.4%Claude Sonnet 4.6
TaxEval (Vals AI)77.1%71.8%Claude Sonnet 4.6
MortgageTax (Vals AI)67.7%68.0%Gemini 3.1 Flash Lite Preview
MedQA (Vals AI)92.1%Not measuredOnly Claude Sonnet 4.6 measured
MedCode (Vals AI)Not measured47.6%Only Gemini 3.1 Flash Lite Preview measured
SimpleQA Verified35.5%Not measuredOnly Claude Sonnet 4.6 measured
LMArena Text: science14741425Claude Sonnet 4.6
LMArena Text: medicine and healthcare14511428Claude Sonnet 4.6
LMArena Text: legal and government14701418Claude Sonnet 4.6
LMArena Text: business and finance14641389Claude Sonnet 4.6
FACTS Benchmark Suite37.0%51.4%Gemini 3.1 Flash Lite Preview
Neither model has a result on the other 4 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index80
Web design benchmarks for Claude Sonnet 4.6 and Gemini 3.1 Flash Lite Preview
BenchmarkClaude Sonnet 4.6Gemini 3.1 Flash Lite PreviewLeader
Design Arena: websites12841082Claude Sonnet 4.6
Design Arena: UI components12691069Claude Sonnet 4.6
Design Arena: game dev12581029Claude Sonnet 4.6
Design Arena: data viz12781045Claude Sonnet 4.6
Design Arena: 3D12341047Claude Sonnet 4.6
Design Arena: all code categories12751072Claude Sonnet 4.6
Design Arena: SVG11961052Claude Sonnet 4.6
Design Arena: ASCII art12351167Claude Sonnet 4.6
LiveBench design71.8%Not measuredOnly Claude Sonnet 4.6 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index215
General benchmarks for Claude Sonnet 4.6 and Gemini 3.1 Flash Lite Preview
BenchmarkClaude Sonnet 4.6Gemini 3.1 Flash Lite PreviewLeader
LiveBench data analysis76.1%Not measuredOnly Claude Sonnet 4.6 measured
Public Benefits Bench (Vals AI)62.5%Not measuredOnly Claude Sonnet 4.6 measured
SAGE (Vals AI)46.6%49.5%Gemini 3.1 Flash Lite Preview
MedScribe (Vals AI)Not measured63.9%Only Gemini 3.1 Flash Lite Preview measured
Vals Multimodal Index60.6%41.4%Claude Sonnet 4.6
IFBench56.6%Not measuredOnly Claude Sonnet 4.6 measured
Long context reasoning (AA-LCR)80.0%Not measuredOnly Claude Sonnet 4.6 measured
DTBench89.9%Not measuredOnly Claude Sonnet 4.6 measured
LMCA46.5%Not measuredOnly Claude Sonnet 4.6 measured
ExploitBench23.6%Not measuredOnly Claude Sonnet 4.6 measured
LMArena Text14581416Claude Sonnet 4.6
LMArena Text: instruction following14761377Claude Sonnet 4.6
LMArena Text: creative writing14351401Claude Sonnet 4.6
LMArena Vision12831240Claude Sonnet 4.6
LMArena Text: English14721414Claude Sonnet 4.6
LMArena Text: non-English14401410Claude Sonnet 4.6
LMArena Text: Chinese14911460Claude Sonnet 4.6
LMArena Text: German14281430Gemini 3.1 Flash Lite Preview
LMArena Text: Japanese14201413Claude Sonnet 4.6
LMArena Text: Korean14101392Claude Sonnet 4.6
LMArena Text: French14651424Claude Sonnet 4.6
LMArena Text: Spanish14641421Claude Sonnet 4.6
LMArena Text: Russian14401420Claude Sonnet 4.6
LMArena Text: Polish14431443Gemini 3.1 Flash Lite Preview
LMArena Text: multi-turn14641417Claude Sonnet 4.6
LMArena Text: longer queries14791394Claude Sonnet 4.6
LMArena Text: writing and language14441408Claude Sonnet 4.6
LMArena Text: entertainment and media14311386Claude Sonnet 4.6
LMArena Vision: English12981232Claude Sonnet 4.6
LMArena Vision: Chinese13071278Claude Sonnet 4.6
LMArena Vision: reading text12961246Claude Sonnet 4.6
LMArena Vision: humor12481266Gemini 3.1 Flash Lite Preview
LMArena Vision: captioningNot measured1259Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: recognizing things11951308Gemini 3.1 Flash Lite Preview
LMArena Vision: creative writing12721248Claude Sonnet 4.6
LMArena Document1482Not measuredOnly Claude Sonnet 4.6 measured
Neither model has a result on the other 10 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Claude Sonnet 4.6 and Gemini 3.1 Flash Lite Preview
BenchmarkClaude Sonnet 4.6Gemini 3.1 Flash Lite PreviewLeader
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

Claude Sonnet 4.6$0.011Fits in one request
Gemini 3.1 Flash Lite Preview$0.0010Fits in one request

Gemini 3.1 Flash Lite Preview costs less

Repository review

50K input + 3K output tokens

Claude Sonnet 4.6$0.195Fits in one request
Gemini 3.1 Flash Lite Preview$0.017Fits in one request

Gemini 3.1 Flash Lite Preview costs less

Agent loop

200K input + 10K output tokens

Claude Sonnet 4.6$0.750Fits in one request
Gemini 3.1 Flash Lite Preview$0.065Fits 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 Claude Sonnet 4.6 and Gemini 3.1 Flash Lite Preview
SpecificationAnthropic Claude Sonnet 4.6Google Gemini 3.1 Flash Lite Preview
MakerAnthropicGoogle
WeightsNo public weights listedNo public weights listed
ReleasedFebruary 17, 2026March 3, 2026
Context window1M1.05M
Input $/Mtok$3.00$0.25
Output $/Mtok$15.00$1.50
Coding index57.322.7
Independent measurements behind it53
Cost per solved task$1.68$0.18
SourceOpenRouter listingOpenRouter listing

Questions

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

Pick Claude Sonnet 4.6 for coding: it scores 57.3 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 10.0x cheaper ($1.50 vs $15.00 per million) and a lower cost per solved task ($0.18 against $1.68).

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

Claude Sonnet 4.6 costs $3.00 per million input tokens and $15.00 per million output tokens; Gemini 3.1 Flash Lite Preview costs $0.25 and $1.50. Per solved SWE-bench Verified task, Claude Sonnet 4.6 costs $1.68 and Gemini 3.1 Flash Lite Preview $0.18.

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

Gemini 3.1 Flash Lite Preview, with 1.05M tokens against 1M.

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

74 benchmarks have a result for both models as of October 22, 2026. Claude Sonnet 4.6's coding index rests on 5 independent benchmarks and Gemini 3.1 Flash Lite Preview's on 3. Where only one model has a result, the page says so instead of naming a winner.

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