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Claude Opus 4.8 vs Gemini 3.1 Flash Lite Preview

Claude Opus 4.8 leads Gemini 3.1 Flash Lite Preview on coding, 65.0 to 22.7 on the Vibe Coding Index, and Gemini 3.1 Flash Lite Preview costs 16.7x less per output token ($1.50 vs $25.00 per million). Updated October 22, 2026; 73 benchmarks have a result for both.

Replace Claude Opus 4.8 Replace Gemini 3.1 Flash Lite Preview
Claude Opus 4.8Anthropic
Coding
65.0
Overall
69.8
Output $/M
$25.00
72
Gemini 3.1 Flash Lite PreviewGoogle
Coding
22.7
Overall
36.6
Output $/M
$1.50
1
vs boards won of 73 shared

Claude Opus 4.8 or Gemini 3.1 Flash Lite Preview: which to pick

Pick Claude Opus 4.8 for coding: it scores 65.0 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 16.7x cheaper ($1.50 vs $25.00 per million) and a lower cost per solved task ($0.18 against $2.17).

Model AClaude Opus 4.8Anthropic65.0/1006 independent benchmarks$2.17 per solved taskModel BGemini 3.1 Flash Lite PreviewGoogle22.7/1003 independent benchmarks$0.18 per solved task
Shared results
73
Claude Opus 4.8 only
57
Gemini 3.1 Flash Lite Preview only
6
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 Opus 4.8 65.0 from 6 benchmarks, Gemini 3.1 Flash Lite Preview 22.7 from 3 benchmarks.
Widest category
Agentic work, 38.4 points apart on average over 5 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): Claude Opus 4.8 82.7% against Gemini 3.1 Flash Lite Preview 0.0%, 82.7 points apart on a 0 to 100 scale.
Output price
Claude Opus 4.8 $25.00 against Gemini 3.1 Flash Lite Preview $1.50 per million output tokens, 16.7x apart.
Context window
Claude Opus 4.8 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 Opus 4.8BarsGemini 3.1 Flash Lite PreviewTies
Coding130
Intelligence10
Agentic work50
Reasoning70
Math20
Knowledge101
Web design80
General260
All shared boards721
CodingLike-for-likeSix of these boards feed the Vibe Coding Index130
Coding benchmarks for Claude Opus 4.8 and Gemini 3.1 Flash Lite Preview
BenchmarkClaude Opus 4.8Gemini 3.1 Flash Lite PreviewLeader
LiveBench coding77.3%Not measuredOnly Claude Opus 4.8 measured
LMArena WebDev15561257Claude Opus 4.8
AA Coding Index74.334.7Claude Opus 4.8
LiveCodeBench (Vals AI)87.8%80.1%Claude Opus 4.8
SWE-bench Verified (Vals AI)88.6%62.8%Claude Opus 4.8
Terminal-Bench 4 (Vals AI)23.2%Not measuredOnly Claude Opus 4.8 measured
Vibe Code Bench (Vals AI)82.7%0.0%Claude Opus 4.8
Code migration (Vals AI)47.3%4.6%Claude Opus 4.8
ProgramBench (Vals AI)1.0%0.0%Claude Opus 4.8
Terminal-Bench 2.1 (Vals AI)71.9%34.1%Claude Opus 4.8
SkillsBench (Vals AI)59.2%Not measuredOnly Claude Opus 4.8 measured
SciCode54.4%Not measuredOnly Claude Opus 4.8 measured
Terminal-Bench Hard (Artificial Analysis run)58.3%Not measuredOnly Claude Opus 4.8 measured
FrontierCode46.5%Not measuredOnly Claude Opus 4.8 measured
GSO-Bench47.1%Not measuredOnly Claude Opus 4.8 measured
WeirdML82.9%Not measuredOnly Claude Opus 4.8 measured
ALE-BenchNot measured797.7Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: coding14901400Claude Opus 4.8
LMArena Text: software and IT14881413Claude Opus 4.8
LMArena WebDev: React15571245Claude Opus 4.8
LMArena WebDev: HTML15431276Claude Opus 4.8
LMArena WebDev: from an imageNot measured1336Only Gemini 3.1 Flash Lite Preview measured
SciCode12.3%4.6%Claude Opus 4.8
Neither model has a result on the other 16 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
Intelligence benchmarks for Claude Opus 4.8 and Gemini 3.1 Flash Lite Preview
BenchmarkClaude Opus 4.8Gemini 3.1 Flash Lite PreviewLeader
AA Intelligence Index41.815.6Claude Opus 4.8
Epoch Capabilities Index159.0Not measuredOnly Claude Opus 4.8 measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index50
Agentic work benchmarks for Claude Opus 4.8 and Gemini 3.1 Flash Lite Preview
BenchmarkClaude Opus 4.8Gemini 3.1 Flash Lite PreviewLeader
AA Agentic Index41.91.6Claude Opus 4.8
Design Arena: agents building web apps1233Not measuredOnly Claude Opus 4.8 measured
Design Arena: agents building full-stack apps1249Not measuredOnly Claude Opus 4.8 measured
Design Arena: agents building mobile apps1222Not measuredOnly Claude Opus 4.8 measured
Design Arena: agents building Android apps1233Not measuredOnly Claude Opus 4.8 measured
Design Arena: agents building Godot games1231Not measuredOnly Claude Opus 4.8 measured
Design Arena: agents building games1239Not measuredOnly Claude Opus 4.8 measured
Design Arena: HTML slides1171Not measuredOnly Claude Opus 4.8 measured
Design Arena: PowerPoint slides1202Not measuredOnly Claude Opus 4.8 measured
Design Arena: spreadsheets1303Not measuredOnly Claude Opus 4.8 measured
LiveBench research81.8%Not measuredOnly Claude Opus 4.8 measured
LiveBench browser96.0%Not measuredOnly Claude Opus 4.8 measured
LiveBench long agentic48.3%Not measuredOnly Claude Opus 4.8 measured
Finance Agent (Vals AI)53.9%30.0%Claude Opus 4.8
Tax Agent Bench (Vals AI)30.0%3.1%Claude Opus 4.8
Legal Research Bench (Vals AI)43.8%3.4%Claude Opus 4.8
Excel Modeling Benchmark (Vals AI)69.4%8.6%Claude Opus 4.8
Terminal-Bench-Science (Vals AI)4.3%Not measuredOnly Claude Opus 4.8 measured
Time Horizon Index (Vals AI)11.8%Not measuredOnly Claude Opus 4.8 measured
τ²-Bench Telecom94.4%Not measuredOnly Claude Opus 4.8 measured
APEX-Agents48.9%Not measuredOnly Claude Opus 4.8 measured
Remote Labor Index8.3%Not measuredOnly Claude Opus 4.8 measured
OSWorld 2.020.6%Not measuredOnly Claude Opus 4.8 measured
DeepResearch Bench50.2%Not measuredOnly Claude Opus 4.8 measured
PostTrainBench33.8%Not measuredOnly Claude Opus 4.8 measured
Vending-Bench 2$5,787Not measuredOnly Claude Opus 4.8 measured
LMArena Search1204Not measuredOnly Claude Opus 4.8 measured
Neither model has a result on the other 14 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index70
Reasoning benchmarks for Claude Opus 4.8 and Gemini 3.1 Flash Lite Preview
BenchmarkClaude Opus 4.8Gemini 3.1 Flash Lite PreviewLeader
GPQA Diamond92.4%81.1%Claude Opus 4.8
LiveBench reasoning89.2%Not measuredOnly Claude Opus 4.8 measured
MMMU Pro (Vals AI)86.6%82.5%Claude Opus 4.8
GPQA Diamond (Artificial Analysis run)92.0%Not measuredOnly Claude Opus 4.8 measured
Humanity's Last Exam (Artificial Analysis run)48.7%Not measuredOnly Claude Opus 4.8 measured
GPQA Diamond (Epoch AI run)91.0%Not measuredOnly Claude Opus 4.8 measured
ARC-AGI92.5%Not measuredOnly Claude Opus 4.8 measured
ARC-AGI-272.1%Not measuredOnly Claude Opus 4.8 measured
SimpleBench64.8%Not measuredOnly Claude Opus 4.8 measured
Chess puzzles52.0%Not measuredOnly Claude Opus 4.8 measured
Mystery game puzzles36.0%Not measuredOnly Claude Opus 4.8 measured
EBR-bench28.6%Not measuredOnly Claude Opus 4.8 measured
LMArena Text: hard prompts14821407Claude Opus 4.8
LMArena Text: expert15031398Claude Opus 4.8
LMArena Text: hard prompts in English14871403Claude Opus 4.8
LMArena Vision: diagrams13151242Claude Opus 4.8
LMArena Vision: homework13371271Claude Opus 4.8
Kagi LLM Benchmark88.8%Not measuredOnly Claude Opus 4.8 measured
Neither model has a result on the other 4 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index20
Math benchmarks for Claude Opus 4.8 and Gemini 3.1 Flash Lite Preview
BenchmarkClaude Opus 4.8Gemini 3.1 Flash Lite PreviewLeader
AIMENot measured83.3%Only Gemini 3.1 Flash Lite Preview measured
OTIS Mock AIME98.3%Not measuredOnly Claude Opus 4.8 measured
FrontierMath, tiers 1 to 380.0%Not measuredOnly Claude Opus 4.8 measured
FrontierMath, tier 456.1%Not measuredOnly Claude Opus 4.8 measured
ProofBench69.0%Not measuredOnly Claude Opus 4.8 measured
LMArena Text: math14861428Claude Opus 4.8
LMArena Text: mathematical work14971417Claude Opus 4.8
Neither model has a result on the other 6 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index101
Knowledge benchmarks for Claude Opus 4.8 and Gemini 3.1 Flash Lite Preview
BenchmarkClaude Opus 4.8Gemini 3.1 Flash Lite PreviewLeader
MMLU Pro89.6%86.2%Claude Opus 4.8
LegalBench (Vals AI)83.6%83.8%Gemini 3.1 Flash Lite Preview
CaseLaw (Vals AI)Not measured55.0%Only Gemini 3.1 Flash Lite Preview measured
CorpFin (Vals AI)66.7%59.4%Claude Opus 4.8
TaxEval (Vals AI)75.6%71.8%Claude Opus 4.8
MortgageTax (Vals AI)69.9%68.0%Claude Opus 4.8
MedCode (Vals AI)53.2%47.6%Claude Opus 4.8
SimpleQA Verified53.0%Not measuredOnly Claude Opus 4.8 measured
LMArena Text: science14771425Claude Opus 4.8
LMArena Text: medicine and healthcare14641428Claude Opus 4.8
LMArena Text: legal and government14771418Claude Opus 4.8
LMArena Text: business and finance14581389Claude Opus 4.8
FACTS Benchmark Suite53.5%51.4%Claude Opus 4.8
Neither model has a result on the other 5 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index80
Web design benchmarks for Claude Opus 4.8 and Gemini 3.1 Flash Lite Preview
BenchmarkClaude Opus 4.8Gemini 3.1 Flash Lite PreviewLeader
Design Arena: websites12581082Claude Opus 4.8
Design Arena: UI components12551069Claude Opus 4.8
Design Arena: game dev12641029Claude Opus 4.8
Design Arena: data viz12401045Claude Opus 4.8
Design Arena: 3D12221047Claude Opus 4.8
Design Arena: all code categories12551072Claude Opus 4.8
Design Arena: SVG11951052Claude Opus 4.8
Design Arena: ASCII art12771167Claude Opus 4.8
LiveBench design78.8%Not measuredOnly Claude Opus 4.8 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index260
General benchmarks for Claude Opus 4.8 and Gemini 3.1 Flash Lite Preview
BenchmarkClaude Opus 4.8Gemini 3.1 Flash Lite PreviewLeader
LiveBench data analysis66.0%Not measuredOnly Claude Opus 4.8 measured
Public Benefits Bench (Vals AI)68.1%Not measuredOnly Claude Opus 4.8 measured
SAGE (Vals AI)54.8%49.5%Claude Opus 4.8
MedScribe (Vals AI)85.8%63.9%Claude Opus 4.8
Vals Multimodal Index70.9%41.4%Claude Opus 4.8
IFBench62.2%Not measuredOnly Claude Opus 4.8 measured
Long context reasoning (AA-LCR)77.7%Not measuredOnly Claude Opus 4.8 measured
DTBench94.9%Not measuredOnly Claude Opus 4.8 measured
LMCA57.5%Not measuredOnly Claude Opus 4.8 measured
Surface Evolver Bench87.5%Not measuredOnly Claude Opus 4.8 measured
Furniture assembly42.5%Not measuredOnly Claude Opus 4.8 measured
LMArena Text14611416Claude Opus 4.8
LMArena Text: instruction following14761377Claude Opus 4.8
LMArena Text: creative writing14541401Claude Opus 4.8
LMArena Vision12941240Claude Opus 4.8
LMArena Text: English14681414Claude Opus 4.8
LMArena Text: non-English14501410Claude Opus 4.8
LMArena Text: Chinese15061460Claude Opus 4.8
LMArena Text: German14721430Claude Opus 4.8
LMArena Text: Japanese14421413Claude Opus 4.8
LMArena Text: Korean14311392Claude Opus 4.8
LMArena Text: French14811424Claude Opus 4.8
LMArena Text: Spanish14651421Claude Opus 4.8
LMArena Text: Russian14741420Claude Opus 4.8
LMArena Text: Polish14591443Claude Opus 4.8
LMArena Text: multi-turn14761417Claude Opus 4.8
LMArena Text: longer queries14831394Claude Opus 4.8
LMArena Text: writing and language14611408Claude Opus 4.8
LMArena Text: entertainment and media14401386Claude Opus 4.8
LMArena Vision: English12931232Claude Opus 4.8
LMArena Vision: Chinese13461278Claude Opus 4.8
LMArena Vision: reading text13031246Claude Opus 4.8
LMArena Vision: humor12821266Claude Opus 4.8
LMArena Vision: captioningNot measured1259Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: recognizing thingsNot measured1308Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: creative writing13011248Claude Opus 4.8
LMArena Document1475Not measuredOnly Claude Opus 4.8 measured
Neither model has a result on the other 9 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Claude Opus 4.8 and Gemini 3.1 Flash Lite Preview
BenchmarkClaude Opus 4.8Gemini 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 Opus 4.8$0.018Fits 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 Opus 4.8$0.325Fits 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 Opus 4.8$1.25Fits 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 Opus 4.8 and Gemini 3.1 Flash Lite Preview
SpecificationAnthropic Claude Opus 4.8Google Gemini 3.1 Flash Lite Preview
MakerAnthropicGoogle
WeightsNo public weights listedNo public weights listed
ReleasedMay 27, 2026March 3, 2026
Context window1M1.05M
Input $/Mtok$5.00$0.25
Output $/Mtok$25.00$1.50
Coding index65.022.7
Independent measurements behind it63
Cost per solved task$2.17$0.18
SourceOpenRouter listingOpenRouter listing

Questions

Is Claude Opus 4.8 better than Gemini 3.1 Flash Lite Preview for coding?

Pick Claude Opus 4.8 for coding: it scores 65.0 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 16.7x cheaper ($1.50 vs $25.00 per million) and a lower cost per solved task ($0.18 against $2.17).

Which is cheaper, Claude Opus 4.8 or Gemini 3.1 Flash Lite Preview?

Claude Opus 4.8 costs $5.00 per million input tokens and $25.00 per million output tokens; Gemini 3.1 Flash Lite Preview costs $0.25 and $1.50. Per solved SWE-bench Verified task, Claude Opus 4.8 costs $2.17 and Gemini 3.1 Flash Lite Preview $0.18.

Which has the bigger context window, Claude Opus 4.8 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 Opus 4.8 vs Gemini 3.1 Flash Lite Preview comparison based on?

73 benchmarks have a result for both models as of October 22, 2026. Claude Opus 4.8's coding index rests on 6 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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