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Claude Haiku 4.5 vs Gemini 3.5 Flash Lite

Gemini 3.5 Flash Lite leads Claude Haiku 4.5 on coding, 49.0 to 35.6 on the Vibe Coding Index, and Gemini 3.5 Flash Lite costs 2.0x less per output token ($2.50 vs $5.00 per million). Updated October 22, 2026; 63 benchmarks have a result for both.

Replace Claude Haiku 4.5 Replace Gemini 3.5 Flash Lite
Claude Haiku 4.5Anthropic
Coding
35.6
Overall
41.0
Output $/M
$5.00
6
Gemini 3.5 Flash LiteGoogle
Coding
49.0
Overall
49.8
Output $/M
$2.50
56
vs boards won of 63 shared, 1 tied

Claude Haiku 4.5 or Gemini 3.5 Flash Lite: which to pick

Pick Gemini 3.5 Flash Lite for coding: it scores 49.0 on the Vibe Coding Index against 35.6 for Claude Haiku 4.5, though on 3 benchmarks against 4.

Pick Claude Haiku 4.5 for work measured by Code migration (Vals AI) or WeirdML, where it leads.

Model AClaude Haiku 4.5Anthropic35.6/1004 independent benchmarks$0.56 per solved taskModel BGemini 3.5 Flash LiteGoogle49.0/1003 independent benchmarks$0.41 per solved task
Shared results
63
Claude Haiku 4.5 only
32
Gemini 3.5 Flash Lite only
22
Like-for-like categories
7 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 Haiku 4.5 35.6 from 4 benchmarks, Gemini 3.5 Flash Lite 49.0 from 3 benchmarks.
Widest category
Reasoning, 10.2 points apart on average over 9 shared benchmarks.
Widest single gap
LiveCodeBench (Vals AI): Claude Haiku 4.5 41.2% against Gemini 3.5 Flash Lite 79.0%, 37.8 points apart on a 0 to 100 scale.
Output price
Claude Haiku 4.5 $5.00 against Gemini 3.5 Flash Lite $2.50 per million output tokens, 2.0x apart.
Context window
Claude Haiku 4.5 takes 200K tokens, Gemini 3.5 Flash Lite 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 Haiku 4.5BarsGemini 3.5 Flash LiteTies
Coding381 tie
Intelligence02
Agentic work05
Reasoning18
Math03
Knowledge010
General220
All shared boards6561 tie
CodingLike-for-likeSix of these boards feed the Vibe Coding Index38
Coding benchmarks for Claude Haiku 4.5 and Gemini 3.5 Flash Lite
BenchmarkClaude Haiku 4.5Gemini 3.5 Flash LiteLeader
SWE-bench Verified66.6%Not measuredOnly Claude Haiku 4.5 measured
SWE-bench Multilingual64.7%Not measuredOnly Claude Haiku 4.5 measured
LiveBench coding48.1%Not measuredOnly Claude Haiku 4.5 measured
LMArena WebDev13301435Gemini 3.5 Flash Lite
AA Coding Index43.949.3Gemini 3.5 Flash Lite
LiveCodeBench (Vals AI)41.2%79.0%Gemini 3.5 Flash Lite
SWE-bench Verified (Vals AI)66.6%75.0%Gemini 3.5 Flash Lite
Vibe Code Bench (Vals AI)11.4%37.2%Gemini 3.5 Flash Lite
Code migration (Vals AI)7.5%6.2%Claude Haiku 4.5
ProgramBench (Vals AI)0.0%0.0%Tie
Terminal-Bench 2.1 (Vals AI)43.8%50.2%Gemini 3.5 Flash Lite
CyberBench (Vals AI)Not measured59.1%Only Gemini 3.5 Flash Lite measured
SciCodeNot measured41.3%Only Gemini 3.5 Flash Lite measured
Terminal-Bench35.5%Not measuredOnly Claude Haiku 4.5 measured
WeirdML45.4%39.0%Claude Haiku 4.5
ALE-BenchNot measured765.3Only Gemini 3.5 Flash Lite measured
LMArena Text: coding14541453Claude Haiku 4.5
LMArena Text: software and IT14391451Gemini 3.5 Flash Lite
LMArena WebDev: React13261408Gemini 3.5 Flash Lite
LMArena WebDev: HTML1318Not measuredOnly Claude Haiku 4.5 measured
LMArena WebDev: from an imageNot measured1448Only Gemini 3.5 Flash Lite measured
SciCodeNot measured6.2%Only Gemini 3.5 Flash Lite measured
Neither model has a result on the other 17 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
Intelligence benchmarks for Claude Haiku 4.5 and Gemini 3.5 Flash Lite
BenchmarkClaude Haiku 4.5Gemini 3.5 Flash LiteLeader
AA Intelligence Index16.922.2Gemini 3.5 Flash Lite
Epoch Capabilities Index142.2144.9Gemini 3.5 Flash Lite
Agentic workLike-for-likePublic boards, shown as published, kept out of the index05
Agentic work benchmarks for Claude Haiku 4.5 and Gemini 3.5 Flash Lite
BenchmarkClaude Haiku 4.5Gemini 3.5 Flash LiteLeader
AA Agentic Index8.014.3Gemini 3.5 Flash Lite
LiveBench research42.2%Not measuredOnly Claude Haiku 4.5 measured
LiveBench browser40.0%Not measuredOnly Claude Haiku 4.5 measured
LiveBench long agentic11.1%Not measuredOnly Claude Haiku 4.5 measured
Finance Agent (Vals AI)31.0%47.4%Gemini 3.5 Flash Lite
Tax Agent Bench (Vals AI)5.9%7.2%Gemini 3.5 Flash Lite
Legal Research Bench (Vals AI)10.6%13.9%Gemini 3.5 Flash Lite
Excel Modeling Benchmark (Vals AI)22.7%43.2%Gemini 3.5 Flash Lite
APEX-AgentsNot measured29.3%Only Gemini 3.5 Flash Lite measured
BALROG31.2%Not measuredOnly Claude Haiku 4.5 measured
DeepResearch Bench45.5%Not measuredOnly Claude Haiku 4.5 measured
Vending-Bench 2$459Not measuredOnly Claude Haiku 4.5 measured
Berkeley Function Calling Leaderboard (BFCL)68.7%Not measuredOnly Claude Haiku 4.5 measured
Neither model has a result on the other 28 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index18
Reasoning benchmarks for Claude Haiku 4.5 and Gemini 3.5 Flash Lite
BenchmarkClaude Haiku 4.5Gemini 3.5 Flash LiteLeader
GPQA Diamond72.2%83.8%Gemini 3.5 Flash Lite
LiveBench reasoning61.7%Not measuredOnly Claude Haiku 4.5 measured
MMMU Pro (Vals AI)46.1%83.6%Gemini 3.5 Flash Lite
GPQA Diamond (Artificial Analysis run)Not measured83.8%Only Gemini 3.5 Flash Lite measured
Humanity's Last Exam (Artificial Analysis run)Not measured18.8%Only Gemini 3.5 Flash Lite measured
GPQA Diamond (Epoch AI run)71.2%83.3%Gemini 3.5 Flash Lite
ARC-AGI47.7%53.5%Gemini 3.5 Flash Lite
ARC-AGI-24.0%10.3%Gemini 3.5 Flash Lite
Chess puzzles8.0%21.0%Gemini 3.5 Flash Lite
Mystery game puzzlesNot measured19.0%Only Gemini 3.5 Flash Lite measured
LMArena Text: hard prompts14211441Gemini 3.5 Flash Lite
LMArena Text: expert14431434Claude Haiku 4.5
LMArena Text: hard prompts in English14351440Gemini 3.5 Flash Lite
LMArena Vision: diagramsNot measured1284Only Gemini 3.5 Flash Lite measured
LMArena Vision: homeworkNot measured1291Only Gemini 3.5 Flash Lite measured
Neither model has a result on the other 7 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index03
Math benchmarks for Claude Haiku 4.5 and Gemini 3.5 Flash Lite
BenchmarkClaude Haiku 4.5Gemini 3.5 Flash LiteLeader
AIME82.7%Not measuredOnly Claude Haiku 4.5 measured
MGSM (Vals AI)92.2%Not measuredOnly Claude Haiku 4.5 measured
OTIS Mock AIME66.7%71.1%Gemini 3.5 Flash Lite
FrontierMath, tiers 1 to 3Not measured26.0%Only Gemini 3.5 Flash Lite measured
FrontierMath, tier 4Not measured0.0%Only Gemini 3.5 Flash Lite measured
ProofBenchNot measured13.0%Only Gemini 3.5 Flash Lite measured
MATH level 596.4%Not measuredOnly Claude Haiku 4.5 measured
LMArena Text: math13981434Gemini 3.5 Flash Lite
LMArena Text: mathematical work14301433Gemini 3.5 Flash Lite
Neither model has a result on the other 4 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index010
Knowledge benchmarks for Claude Haiku 4.5 and Gemini 3.5 Flash Lite
BenchmarkClaude Haiku 4.5Gemini 3.5 Flash LiteLeader
MMLU Pro78.7%85.8%Gemini 3.5 Flash Lite
LegalBench (Vals AI)81.2%84.1%Gemini 3.5 Flash Lite
CaseLaw (Vals AI)56.5%Not measuredOnly Claude Haiku 4.5 measured
CorpFin (Vals AI)60.6%60.7%Gemini 3.5 Flash Lite
TaxEval (Vals AI)67.5%72.6%Gemini 3.5 Flash Lite
MortgageTax (Vals AI)62.2%68.7%Gemini 3.5 Flash Lite
MedQA (Vals AI)79.6%Not measuredOnly Claude Haiku 4.5 measured
MedCode (Vals AI)32.7%43.5%Gemini 3.5 Flash Lite
SimpleQA Verified13.2%Not measuredOnly Claude Haiku 4.5 measured
LMArena Text: science14061451Gemini 3.5 Flash Lite
LMArena Text: medicine and healthcare13941438Gemini 3.5 Flash Lite
LMArena Text: legal and government14001431Gemini 3.5 Flash Lite
LMArena Text: business and finance14001423Gemini 3.5 Flash Lite
FACTS Benchmark SuiteNot measured53.5%Only Gemini 3.5 Flash Lite measured
Neither model has a result on the other 4 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index9 boards, none shared
Web design benchmarks for Claude Haiku 4.5 and Gemini 3.5 Flash Lite
BenchmarkClaude Haiku 4.5Gemini 3.5 Flash LiteLeader
Design Arena: websites1122Not measuredOnly Claude Haiku 4.5 measured
Design Arena: UI components1097Not measuredOnly Claude Haiku 4.5 measured
Design Arena: game dev1097Not measuredOnly Claude Haiku 4.5 measured
Design Arena: data viz1124Not measuredOnly Claude Haiku 4.5 measured
Design Arena: 3D1071Not measuredOnly Claude Haiku 4.5 measured
Design Arena: all code categories1114Not measuredOnly Claude Haiku 4.5 measured
Design Arena: SVG1025Not measuredOnly Claude Haiku 4.5 measured
Design Arena: ASCII art1140Not measuredOnly Claude Haiku 4.5 measured
LiveBench design59.9%Not measuredOnly Claude Haiku 4.5 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index220
General benchmarks for Claude Haiku 4.5 and Gemini 3.5 Flash Lite
BenchmarkClaude Haiku 4.5Gemini 3.5 Flash LiteLeader
LiveBench data analysis59.3%Not measuredOnly Claude Haiku 4.5 measured
Public Benefits Bench (Vals AI)54.3%51.8%Claude Haiku 4.5
SAGE (Vals AI)31.8%47.3%Gemini 3.5 Flash Lite
MedScribe (Vals AI)85.2%70.9%Claude Haiku 4.5
Vals Multimodal Index42.9%Not measuredOnly Claude Haiku 4.5 measured
Long context reasoning (AA-LCR)Not measured76.0%Only Gemini 3.5 Flash Lite measured
DTBench73.6%83.5%Gemini 3.5 Flash Lite
LMCA30.9%37.6%Gemini 3.5 Flash Lite
ExploitBench13.7%Not measuredOnly Claude Haiku 4.5 measured
LMArena Text13971435Gemini 3.5 Flash Lite
LMArena Text: instruction following14141419Gemini 3.5 Flash Lite
LMArena Text: creative writing13711421Gemini 3.5 Flash Lite
LMArena VisionNot measured1269Only Gemini 3.5 Flash Lite measured
LMArena Text: English14141438Gemini 3.5 Flash Lite
LMArena Text: non-English13771427Gemini 3.5 Flash Lite
LMArena Text: Chinese14181468Gemini 3.5 Flash Lite
LMArena Text: German13741454Gemini 3.5 Flash Lite
LMArena Text: Japanese13381426Gemini 3.5 Flash Lite
LMArena Text: Korean13461407Gemini 3.5 Flash Lite
LMArena Text: French14111451Gemini 3.5 Flash Lite
LMArena Text: Spanish14211441Gemini 3.5 Flash Lite
LMArena Text: Russian13811443Gemini 3.5 Flash Lite
LMArena Text: Polish13431437Gemini 3.5 Flash Lite
LMArena Text: multi-turn14091445Gemini 3.5 Flash Lite
LMArena Text: longer queries14271435Gemini 3.5 Flash Lite
LMArena Text: writing and language13861428Gemini 3.5 Flash Lite
LMArena Text: entertainment and media13691414Gemini 3.5 Flash Lite
LMArena Vision: EnglishNot measured1269Only Gemini 3.5 Flash Lite measured
LMArena Vision: ChineseNot measured1311Only Gemini 3.5 Flash Lite measured
LMArena Vision: reading textNot measured1280Only Gemini 3.5 Flash Lite measured
LMArena Vision: humorNot measured1287Only Gemini 3.5 Flash Lite measured
LMArena Vision: creative writingNot measured1260Only Gemini 3.5 Flash Lite measured
LMArena Document1420Not measuredOnly Claude Haiku 4.5 measured
Neither model has a result on the other 13 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Claude Haiku 4.5 and Gemini 3.5 Flash Lite
BenchmarkClaude Haiku 4.5Gemini 3.5 Flash LiteLeader
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 Haiku 4.5$0.0035Fits in one request
Gemini 3.5 Flash Lite$0.0015Fits in one request

Gemini 3.5 Flash Lite costs less

Repository review

50K input + 3K output tokens

Claude Haiku 4.5$0.065Fits in one request
Gemini 3.5 Flash Lite$0.022Fits in one request

Gemini 3.5 Flash Lite costs less

Agent loop

200K input + 10K output tokens

Claude Haiku 4.5$0.250Exceeds the context window
Gemini 3.5 Flash Lite$0.085Fits in one request

Gemini 3.5 Flash Lite 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 Haiku 4.5 and Gemini 3.5 Flash Lite
SpecificationAnthropic Claude Haiku 4.5Google Gemini 3.5 Flash Lite
MakerAnthropicGoogle
WeightsNo public weights listedNo public weights listed
ReleasedOctober 15, 2025July 21, 2026
Context window200K1.05M
Input $/Mtok$1.00$0.30
Output $/Mtok$5.00$2.50
Coding index35.649.0
Independent measurements behind it43
Cost per solved task$0.56$0.41
SourceOpenRouter listingOpenRouter listing

Questions

Is Claude Haiku 4.5 better than Gemini 3.5 Flash Lite for coding?

Pick Gemini 3.5 Flash Lite for coding: it scores 49.0 on the Vibe Coding Index against 35.6 for Claude Haiku 4.5, though on 3 benchmarks against 4. Pick Claude Haiku 4.5 for work measured by Code migration (Vals AI) or WeirdML, where it leads.

Which is cheaper, Claude Haiku 4.5 or Gemini 3.5 Flash Lite?

Claude Haiku 4.5 costs $1.00 per million input tokens and $5.00 per million output tokens; Gemini 3.5 Flash Lite costs $0.30 and $2.50. Per solved SWE-bench Verified task, Claude Haiku 4.5 costs $0.56 and Gemini 3.5 Flash Lite $0.41.

Which has the bigger context window, Claude Haiku 4.5 or Gemini 3.5 Flash Lite?

Gemini 3.5 Flash Lite, with 1.05M tokens against 200K.

How many benchmarks is the Claude Haiku 4.5 vs Gemini 3.5 Flash Lite comparison based on?

63 benchmarks have a result for both models as of October 22, 2026. Claude Haiku 4.5's coding index rests on 4 independent benchmarks and Gemini 3.5 Flash Lite's on 3. Where only one model has a result, the page says so instead of naming a winner.

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