Claude Haiku 4.5 vs Gemini 3.1 Flash Lite Preview

Claude Haiku 4.5 leads Gemini 3.1 Flash Lite Preview on coding, 35.6 to 22.7 on the Vibe Coding Index, and Gemini 3.1 Flash Lite Preview costs 3.3x less per output token ($1.50 vs $5.00 per million). Updated October 22, 2026; 65 benchmarks have a result for both.

Replace Claude Haiku 4.5 Replace Gemini 3.1 Flash Lite Preview

Claude Haiku 4.5Anthropic

Coding: 35.6
Overall: 41.0
Output $/M: $5.00

Gemini 3.1 Flash Lite PreviewGoogle

Coding: 22.7
Overall: 36.6
Output $/M: $1.50

vs boards won of 65 shared, 1 tied

Claude Haiku 4.5 or Gemini 3.1 Flash Lite Preview: which to pick

Pick Claude Haiku 4.5 for coding: it scores 35.6 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 3.3x cheaper ($1.50 vs $5.00 per million) and a lower cost per solved task ($0.18 against $0.56).

Model AClaude Haiku 4.5Anthropic35.6/1004 independent benchmarks$0.56 per solved task Model BGemini 3.1 Flash Lite PreviewGoogle22.7/1003 independent benchmarks$0.18 per solved task

653014

Shared results: 65
Claude Haiku 4.5 only: 30
Gemini 3.1 Flash Lite Preview only: 14
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.

Coding
Vibe Coding Index, six public coding benchmarks
Claude Haiku 4.5
Claude Haiku 4.5 scores 35.6 against 22.7.
4 and 3 benchmarks behind the scores
Intelligence
AA Intelligence Index
Claude Haiku 4.5
Claude Haiku 4.5 leads, 16.9 against 15.6.
Same board, both measured
Agentic work
AA Agentic Index
Claude Haiku 4.5
Claude Haiku 4.5 leads, 8.0 against 1.6.
Same board, both measured
Reasoning
GPQA Diamond
Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview leads, 81.1% against 72.2%.
Same board, both measured
Math
AIME
Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview leads, 83.3% against 82.7%.
Same board, both measured
Knowledge
MMLU Pro
Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview leads, 86.2% against 78.7%.
Same board, both measured
Web design
Design Arena: websites
Claude Haiku 4.5
Claude Haiku 4.5 leads, 1122 against 1082.
Same board, both measured
Long documents
Listed context window
Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview takes 1.05M tokens against 200K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Gemini 3.1 Flash Lite Preview
Claude Haiku 4.5 $0.0035, Gemini 3.1 Flash Lite Preview $0.0010 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
Gemini 3.1 Flash Lite Preview
Claude Haiku 4.5 $0.56, Gemini 3.1 Flash Lite Preview $0.18.
Published attempt cost and pass rate

At a glance

Coding index: Claude Haiku 4.5 35.6 from 4 benchmarks, Gemini 3.1 Flash Lite Preview 22.7 from 3 benchmarks.
Widest category: Reasoning, 12.1 points apart on average over 5 shared benchmarks.
Widest single gap: LiveCodeBench (Vals AI): Claude Haiku 4.5 41.2% against Gemini 3.1 Flash Lite Preview 80.1%, 39.0 points apart on a 0 to 100 scale.
Output price: Claude Haiku 4.5 $5.00 against Gemini 3.1 Flash Lite Preview $1.50 per million output tokens, 3.3x apart.
Context window: Claude Haiku 4.5 takes 200K 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
Category	Claude Haiku 4.5	Gemini 3.1 Flash Lite Preview	Ties
Coding	10	1	1 tie
Intelligence	1	0
Agentic work	5	0
Reasoning	3	2
Math	1	2
Knowledge	3	8
Web design	6	2
General	6	14
All shared boards	35	29	1 tie

CodingLike-for-likeSix of these boards feed the Vibe Coding Index101

Coding benchmarks for Claude Haiku 4.5 and Gemini 3.1 Flash Lite Preview
Benchmark	Claude Haiku 4.5	Gemini 3.1 Flash Lite Preview	Leader
SWE-bench Verified	66.6%	Not measured	Only Claude Haiku 4.5 measured
SWE-bench Multilingual	64.7%	Not measured	Only Claude Haiku 4.5 measured
LiveBench coding	48.1%	Not measured	Only Claude Haiku 4.5 measured
LMArena WebDev	1330	1257	Claude Haiku 4.5
AA Coding Index	43.9	34.7	Claude Haiku 4.5
LiveCodeBench (Vals AI)	41.2%	80.1%	Gemini 3.1 Flash Lite Preview
SWE-bench Verified (Vals AI)	66.6%	62.8%	Claude Haiku 4.5
Vibe Code Bench (Vals AI)	11.4%	0.0%	Claude Haiku 4.5
Code migration (Vals AI)	7.5%	4.6%	Claude Haiku 4.5
ProgramBench (Vals AI)	0.0%	0.0%	Tie
Terminal-Bench 2.1 (Vals AI)	43.8%	34.1%	Claude Haiku 4.5
Terminal-Bench	35.5%	Not measured	Only Claude Haiku 4.5 measured
WeirdML	45.4%	Not measured	Only Claude Haiku 4.5 measured
ALE-Bench	Not measured	797.7	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: coding	1454	1400	Claude Haiku 4.5
LMArena Text: software and IT	1439	1413	Claude Haiku 4.5
LMArena WebDev: React	1326	1245	Claude Haiku 4.5
LMArena WebDev: HTML	1318	1276	Claude Haiku 4.5
LMArena WebDev: from an image	Not measured	1336	Only Gemini 3.1 Flash Lite Preview measured
SciCode	Not measured	4.6%	Only Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 19 boards here

IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10

Intelligence benchmarks for Claude Haiku 4.5 and Gemini 3.1 Flash Lite Preview
Benchmark	Claude Haiku 4.5	Gemini 3.1 Flash Lite Preview	Leader
AA Intelligence Index	16.9	15.6	Claude Haiku 4.5
Epoch Capabilities Index	142.2	Not measured	Only Claude Haiku 4.5 measured

Agentic workLike-for-likePublic boards, shown as published, kept out of the index50

Agentic work benchmarks for Claude Haiku 4.5 and Gemini 3.1 Flash Lite Preview
Benchmark	Claude Haiku 4.5	Gemini 3.1 Flash Lite Preview	Leader
AA Agentic Index	8.0	1.6	Claude Haiku 4.5
LiveBench research	42.2%	Not measured	Only Claude Haiku 4.5 measured
LiveBench browser	40.0%	Not measured	Only Claude Haiku 4.5 measured
LiveBench long agentic	11.1%	Not measured	Only Claude Haiku 4.5 measured
Finance Agent (Vals AI)	31.0%	30.0%	Claude Haiku 4.5
Tax Agent Bench (Vals AI)	5.9%	3.1%	Claude Haiku 4.5
Legal Research Bench (Vals AI)	10.6%	3.4%	Claude Haiku 4.5
Excel Modeling Benchmark (Vals AI)	22.7%	8.6%	Claude Haiku 4.5
BALROG	31.2%	Not measured	Only Claude Haiku 4.5 measured
DeepResearch Bench	45.5%	Not measured	Only Claude Haiku 4.5 measured
Vending-Bench 2	$459	Not measured	Only Claude Haiku 4.5 measured
Berkeley Function Calling Leaderboard (BFCL)	68.7%	Not measured	Only Claude Haiku 4.5 measured
Neither model has a result on the other 29 boards here

ReasoningLike-for-likePublic boards, shown as published, kept out of the index32

Reasoning benchmarks for Claude Haiku 4.5 and Gemini 3.1 Flash Lite Preview
Benchmark	Claude Haiku 4.5	Gemini 3.1 Flash Lite Preview	Leader
GPQA Diamond	72.2%	81.1%	Gemini 3.1 Flash Lite Preview
LiveBench reasoning	61.7%	Not measured	Only Claude Haiku 4.5 measured
MMMU Pro (Vals AI)	46.1%	82.5%	Gemini 3.1 Flash Lite Preview
GPQA Diamond (Epoch AI run)	71.2%	Not measured	Only Claude Haiku 4.5 measured
ARC-AGI	47.7%	Not measured	Only Claude Haiku 4.5 measured
ARC-AGI-2	4.0%	Not measured	Only Claude Haiku 4.5 measured
Chess puzzles	8.0%	Not measured	Only Claude Haiku 4.5 measured
LMArena Text: hard prompts	1421	1407	Claude Haiku 4.5
LMArena Text: expert	1443	1398	Claude Haiku 4.5
LMArena Text: hard prompts in English	1435	1403	Claude Haiku 4.5
LMArena Vision: diagrams	Not measured	1242	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: homework	Not measured	1271	Only Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 10 boards here

MathLike-for-likePublic boards, shown as published, kept out of the index12

Math benchmarks for Claude Haiku 4.5 and Gemini 3.1 Flash Lite Preview
Benchmark	Claude Haiku 4.5	Gemini 3.1 Flash Lite Preview	Leader
AIME	82.7%	83.3%	Gemini 3.1 Flash Lite Preview
MGSM (Vals AI)	92.2%	Not measured	Only Claude Haiku 4.5 measured
OTIS Mock AIME	66.7%	Not measured	Only Claude Haiku 4.5 measured
MATH level 5	96.4%	Not measured	Only Claude Haiku 4.5 measured
LMArena Text: math	1398	1428	Gemini 3.1 Flash Lite Preview
LMArena Text: mathematical work	1430	1417	Claude Haiku 4.5
Neither model has a result on the other 7 boards here

KnowledgeLike-for-likePublic boards, shown as published, kept out of the index38

Knowledge benchmarks for Claude Haiku 4.5 and Gemini 3.1 Flash Lite Preview
Benchmark	Claude Haiku 4.5	Gemini 3.1 Flash Lite Preview	Leader
MMLU Pro	78.7%	86.2%	Gemini 3.1 Flash Lite Preview
LegalBench (Vals AI)	81.2%	83.8%	Gemini 3.1 Flash Lite Preview
CaseLaw (Vals AI)	56.5%	55.0%	Claude Haiku 4.5
CorpFin (Vals AI)	60.6%	59.4%	Claude Haiku 4.5
TaxEval (Vals AI)	67.5%	71.8%	Gemini 3.1 Flash Lite Preview
MortgageTax (Vals AI)	62.2%	68.0%	Gemini 3.1 Flash Lite Preview
MedQA (Vals AI)	79.6%	Not measured	Only Claude Haiku 4.5 measured
MedCode (Vals AI)	32.7%	47.6%	Gemini 3.1 Flash Lite Preview
SimpleQA Verified	13.2%	Not measured	Only Claude Haiku 4.5 measured
LMArena Text: science	1406	1425	Gemini 3.1 Flash Lite Preview
LMArena Text: medicine and healthcare	1394	1428	Gemini 3.1 Flash Lite Preview
LMArena Text: legal and government	1400	1418	Gemini 3.1 Flash Lite Preview
LMArena Text: business and finance	1400	1389	Claude Haiku 4.5
FACTS Benchmark Suite	Not measured	51.4%	Only Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 4 boards here

Web designLike-for-likePublic boards, shown as published, kept out of the index62

Web design benchmarks for Claude Haiku 4.5 and Gemini 3.1 Flash Lite Preview
Benchmark	Claude Haiku 4.5	Gemini 3.1 Flash Lite Preview	Leader
Design Arena: websites	1122	1082	Claude Haiku 4.5
Design Arena: UI components	1097	1069	Claude Haiku 4.5
Design Arena: game dev	1096	1029	Claude Haiku 4.5
Design Arena: data viz	1124	1045	Claude Haiku 4.5
Design Arena: 3D	1071	1047	Claude Haiku 4.5
Design Arena: all code categories	1114	1071	Claude Haiku 4.5
Design Arena: SVG	1025	1051	Gemini 3.1 Flash Lite Preview
Design Arena: ASCII art	1140	1167	Gemini 3.1 Flash Lite Preview
LiveBench design	59.9%	Not measured	Only Claude Haiku 4.5 measured

GeneralLike-for-likePublic boards, shown as published, kept out of the index614

General benchmarks for Claude Haiku 4.5 and Gemini 3.1 Flash Lite Preview
Benchmark	Claude Haiku 4.5	Gemini 3.1 Flash Lite Preview	Leader
LiveBench data analysis	59.3%	Not measured	Only Claude Haiku 4.5 measured
Public Benefits Bench (Vals AI)	54.3%	Not measured	Only Claude Haiku 4.5 measured
SAGE (Vals AI)	31.8%	49.5%	Gemini 3.1 Flash Lite Preview
MedScribe (Vals AI)	85.2%	63.9%	Claude Haiku 4.5
Vals Multimodal Index	42.9%	41.4%	Claude Haiku 4.5
DTBench	73.6%	Not measured	Only Claude Haiku 4.5 measured
LMCA	30.9%	Not measured	Only Claude Haiku 4.5 measured
ExploitBench	13.7%	Not measured	Only Claude Haiku 4.5 measured
LMArena Text	1397	1416	Gemini 3.1 Flash Lite Preview
LMArena Text: instruction following	1414	1377	Claude Haiku 4.5
LMArena Text: creative writing	1371	1401	Gemini 3.1 Flash Lite Preview
LMArena Vision	Not measured	1240	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: English	1414	1414	Claude Haiku 4.5
LMArena Text: non-English	1377	1410	Gemini 3.1 Flash Lite Preview
LMArena Text: Chinese	1418	1460	Gemini 3.1 Flash Lite Preview
LMArena Text: German	1374	1430	Gemini 3.1 Flash Lite Preview
LMArena Text: Japanese	1338	1413	Gemini 3.1 Flash Lite Preview
LMArena Text: Korean	1346	1392	Gemini 3.1 Flash Lite Preview
LMArena Text: French	1411	1424	Gemini 3.1 Flash Lite Preview
LMArena Text: Spanish	1421	1421	Claude Haiku 4.5
LMArena Text: Russian	1381	1420	Gemini 3.1 Flash Lite Preview
LMArena Text: Polish	1343	1443	Gemini 3.1 Flash Lite Preview
LMArena Text: multi-turn	1409	1417	Gemini 3.1 Flash Lite Preview
LMArena Text: longer queries	1427	1394	Claude Haiku 4.5
LMArena Text: writing and language	1386	1408	Gemini 3.1 Flash Lite Preview
LMArena Text: entertainment and media	1369	1386	Gemini 3.1 Flash Lite Preview
LMArena Vision: English	Not measured	1232	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: Chinese	Not measured	1278	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: reading text	Not measured	1246	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: humor	Not measured	1266	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: captioning	Not measured	1259	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: recognizing things	Not measured	1308	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: creative writing	Not measured	1248	Only Gemini 3.1 Flash Lite Preview measured
LMArena Document	1420	Not measured	Only Claude Haiku 4.5 measured
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 Claude Haiku 4.5 and Gemini 3.1 Flash Lite Preview
Benchmark	Claude Haiku 4.5	Gemini 3.1 Flash Lite Preview	Leader
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 3.1 Flash Lite Preview$0.0010Fits in one request

Gemini 3.1 Flash Lite Preview costs less

Repository review

50K input + 3K output tokens

Claude Haiku 4.5$0.065Fits 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 Haiku 4.5$0.250Exceeds the context window

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 Haiku 4.5 and Gemini 3.1 Flash Lite Preview
Specification	Anthropic Claude Haiku 4.5	Google Gemini 3.1 Flash Lite Preview
Maker	Anthropic	Google
Weights	No public weights listed	No public weights listed
Released	October 15, 2025	March 3, 2026
Context window	200K	1.05M
Input $/Mtok	$1.00	$0.25
Output $/Mtok	$5.00	$1.50
Coding index	35.6	22.7
Independent measurements behind it	4	3
Cost per solved task	$0.56	$0.18
Source	OpenRouter listing	OpenRouter listing

Questions

Is Claude Haiku 4.5 better than Gemini 3.1 Flash Lite Preview for coding?

Pick Claude Haiku 4.5 for coding: it scores 35.6 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 3.3x cheaper ($1.50 vs $5.00 per million) and a lower cost per solved task ($0.18 against $0.56).

Which is cheaper, Claude Haiku 4.5 or Gemini 3.1 Flash Lite Preview?

Claude Haiku 4.5 costs $1.00 per million input tokens and $5.00 per million output tokens; Gemini 3.1 Flash Lite Preview costs $0.25 and $1.50. Per solved SWE-bench Verified task, Claude Haiku 4.5 costs $0.56 and Gemini 3.1 Flash Lite Preview $0.18.

Which has the bigger context window, Claude Haiku 4.5 or Gemini 3.1 Flash Lite Preview?

Gemini 3.1 Flash Lite Preview, with 1.05M tokens against 200K.

How many benchmarks is the Claude Haiku 4.5 vs Gemini 3.1 Flash Lite Preview comparison based on?

65 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 3.1 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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Claude Haiku 4.5 or Gemini 3.1 Flash Lite Preview: which to pick

Which one for your work

Coding

Intelligence

Agentic work

Reasoning

Math

Knowledge

Web design

Long documents

Everyday cost

Cost per solved task

At a glance

Benchmark by benchmark

What each workload costs

Chat turn

Repository review

Agent loop

Specification differences

Questions

Compare next