Claude Haiku 5.5 vs Gemini 3.6 Flash

Claude Haiku 5.5 leads Gemini 3.6 Flash on coding, 70.7 to 62.5 on the Vibe Coding Index, and Claude Haiku 5.5 costs 7.5x less per output token ($0.50 vs $3.75 per million). Updated October 22, 2026; 45 benchmarks have a result for both.

Replace Claude Haiku 5.5 Replace Gemini 3.6 Flash

Claude Haiku 5.5Anthropic

Coding: 70.7
Overall: 67.6
Output $/M: $0.50

Gemini 3.6 FlashGoogle

Coding: 62.5
Overall: 68.3
Output $/M: $3.75

vs boards won of 45 shared, 1 tied

Claude Haiku 5.5 or Gemini 3.6 Flash: which to pick

Pick Claude Haiku 5.5 for coding: it scores 70.7 on the Vibe Coding Index against 62.5 for Gemini 3.6 Flash.

Pick Gemini 3.6 Flash for a larger context window (1.05M against 1M tokens) and work measured by SciCode or Finance Agent (Vals AI), where it leads.

Model AClaude Haiku 5.5Anthropic70.7/1005 independent benchmarksNo cost per solved task Model BGemini 3.6 FlashGoogle62.5/1004 independent benchmarks$1.49 per solved task

452065

Shared results: 45
Claude Haiku 5.5 only: 20
Gemini 3.6 Flash only: 65
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 5.5
Claude Haiku 5.5 scores 70.7 against 62.5.
5 and 4 benchmarks behind the scores
Intelligence
AA Intelligence Index
Claude Haiku 5.5
Claude Haiku 5.5 leads, 43.4 against 34.0.
Same board, both measured
Agentic work
AA Agentic Index
No call
Only Gemini 3.6 Flash has a AA Agentic Index result, 29.0.
Directional only
Reasoning
GPQA Diamond
No call
Only Gemini 3.6 Flash has a GPQA Diamond result, 93.4%.
Directional only
Knowledge
MMLU Pro
No call
Only Gemini 3.6 Flash has a MMLU Pro result, 89.3%.
Directional only
Web design
Design Arena: websites
Gemini 3.6 Flash
Gemini 3.6 Flash leads, 1300 against 1262.
Same board, both measured
General
Vals Index
No call
Only Claude Haiku 5.5 has a Vals Index result, 58.7%.
Directional only
Long documents
Listed context window
Gemini 3.6 Flash
Gemini 3.6 Flash takes 1.05M tokens against 1M.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Claude Haiku 5.5
Claude Haiku 5.5 $0.0003, Gemini 3.6 Flash $0.0026 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
No call
Only Gemini 3.6 Flash has the number, $1.49.
Directional only

At a glance

Coding index: Claude Haiku 5.5 70.7 from 5 benchmarks, Gemini 3.6 Flash 62.5 from 4 benchmarks.
Widest category: Math, 24.6 points apart on average over 4 shared benchmarks.
Widest single gap: ProofBench: Claude Haiku 5.5 89.0% against Gemini 3.6 Flash 36.0%, 53.0 points apart on a 0 to 100 scale.
Output price: Claude Haiku 5.5 $0.50 against Gemini 3.6 Flash $3.75 per million output tokens, 7.5x apart.
Context window: Claude Haiku 5.5 takes 1M tokens, Gemini 3.6 Flash 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 5.5	Gemini 3.6 Flash	Ties
Coding	10	1
Intelligence	2	0
Agentic work	5	2
Reasoning	3	2	1 tie
Math	4	0
Knowledge	0	2
Web design	3	3
General	5	2
All shared boards	32	12	1 tie

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

Coding benchmarks for Claude Haiku 5.5 and Gemini 3.6 Flash
Benchmark	Claude Haiku 5.5	Gemini 3.6 Flash	Leader
LiveBench coding	91.4%	Not measured	Only Claude Haiku 5.5 measured
LMArena WebDev	1586	1538	Claude Haiku 5.5
AA Coding Index	Not measured	69.2	Only Gemini 3.6 Flash measured
LiveCodeBench (Vals AI)	Not measured	88.1%	Only Gemini 3.6 Flash measured
SWE-bench Verified (Vals AI)	Not measured	79.6%	Only Gemini 3.6 Flash measured
Terminal-Bench 4 (Vals AI)	36.4%	Not measured	Only Claude Haiku 5.5 measured
Vibe Code Bench (Vals AI)	90.4%	64.0%	Claude Haiku 5.5
Code migration (Vals AI)	44.6%	30.9%	Claude Haiku 5.5
ProgramBench (Vals AI)	2.5%	0.0%	Claude Haiku 5.5
IOI (Vals AI)	47.3%	35.1%	Claude Haiku 5.5
Terminal-Bench 2.1 (Vals AI)	Not measured	73.8%	Only Gemini 3.6 Flash measured
SWE-bench Multimodal (Vals AI)	44.0%	Not measured	Only Claude Haiku 5.5 measured
Vibe Code Bench 1-100 (Vals AI)	20.4%	Not measured	Only Claude Haiku 5.5 measured
CyberBench (Vals AI)	75.5%	45.4%	Claude Haiku 5.5
SciCode	55.0%	53.4%	Claude Haiku 5.5
FrontierCode	46.4%	34.4%	Claude Haiku 5.5
FrontierSWE	43.8%	Not measured	Only Claude Haiku 5.5 measured
WeirdML	Not measured	56.1%	Only Gemini 3.6 Flash measured
ALE-Bench	Not measured	715.5	Only Gemini 3.6 Flash measured
LMArena Text: coding	Not measured	1491	Only Gemini 3.6 Flash measured
LMArena Text: software and IT	Not measured	1492	Only Gemini 3.6 Flash measured
LMArena WebDev: React	1605	1528	Claude Haiku 5.5
LMArena WebDev: HTML	1569	1547	Claude Haiku 5.5
LMArena WebDev: from an image	Not measured	1545	Only Gemini 3.6 Flash measured
SciCode	9.2%	10.8%	Gemini 3.6 Flash
SWE-Bench Pro V2	87.2%	Not measured	Only Claude Haiku 5.5 measured
Neither model has a result on the other 17 boards here

IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20

Intelligence benchmarks for Claude Haiku 5.5 and Gemini 3.6 Flash
Benchmark	Claude Haiku 5.5	Gemini 3.6 Flash	Leader
AA Intelligence Index	43.4	34.0	Claude Haiku 5.5
Epoch Capabilities Index	159.3	154.5	Claude Haiku 5.5

Agentic workLike-for-likePublic boards, shown as published, kept out of the index52

Agentic work benchmarks for Claude Haiku 5.5 and Gemini 3.6 Flash
Benchmark	Claude Haiku 5.5	Gemini 3.6 Flash	Leader
AA Agentic Index	Not measured	29.0	Only Gemini 3.6 Flash measured
Design Arena: agents building web apps	Not measured	1197	Only Gemini 3.6 Flash measured
Design Arena: agents building full-stack apps	Not measured	1181	Only Gemini 3.6 Flash measured
Design Arena: agents building mobile apps	Not measured	1196	Only Gemini 3.6 Flash measured
Design Arena: agents building Android apps	Not measured	1203	Only Gemini 3.6 Flash measured
Design Arena: agents building games	Not measured	1180	Only Gemini 3.6 Flash measured
Design Arena: HTML slides	Not measured	1088	Only Gemini 3.6 Flash measured
Design Arena: PowerPoint slides	Not measured	1118	Only Gemini 3.6 Flash measured
Design Arena: spreadsheets	Not measured	1072	Only Gemini 3.6 Flash measured
LiveBench research	81.9%	Not measured	Only Claude Haiku 5.5 measured
LiveBench browser	80.0%	Not measured	Only Claude Haiku 5.5 measured
LiveBench long agentic	57.6%	Not measured	Only Claude Haiku 5.5 measured
SREBench (Vals AI)	5.7%	Not measured	Only Claude Haiku 5.5 measured
Finance Agent (Vals AI)	54.1%	56.3%	Gemini 3.6 Flash
Tax Agent Bench (Vals AI)	31.9%	18.0%	Claude Haiku 5.5
Legal Research Bench (Vals AI)	43.3%	25.0%	Claude Haiku 5.5
Harvey's Legal Agent Benchmark (Vals AI)	4.2%	Not measured	Only Claude Haiku 5.5 measured
Excel Modeling Benchmark (Vals AI)	59.0%	65.4%	Gemini 3.6 Flash
BioMysteryBench (Vals AI)	70.4%	58.5%	Claude Haiku 5.5
Terminal-Bench-Science (Vals AI)	10.0%	4.3%	Claude Haiku 5.5
Vals Science Index	38.5%	Not measured	Only Claude Haiku 5.5 measured
APEX-Agents	56.1%	46.9%	Claude Haiku 5.5
Vending-Bench 2	$3,602	Not measured	Only Claude Haiku 5.5 measured
Neither model has a result on the other 19 boards here

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

Reasoning benchmarks for Claude Haiku 5.5 and Gemini 3.6 Flash
Benchmark	Claude Haiku 5.5	Gemini 3.6 Flash	Leader
GPQA Diamond	Not measured	93.4%	Only Gemini 3.6 Flash measured
LiveBench reasoning	82.4%	Not measured	Only Claude Haiku 5.5 measured
MysteryMechanism (Vals AI)	35.1%	Not measured	Only Claude Haiku 5.5 measured
MMMU Pro (Vals AI)	Not measured	88.4%	Only Gemini 3.6 Flash measured
GPQA Diamond (Artificial Analysis run)	Not measured	92.8%	Only Gemini 3.6 Flash measured
Humanity's Last Exam (Artificial Analysis run)	44.4%	40.8%	Claude Haiku 5.5
GPQA Diamond (Epoch AI run)	89.6%	94.1%	Gemini 3.6 Flash
ARC-AGI	89.0%	91.2%	Gemini 3.6 Flash
ARC-AGI-2	61.3%	60.4%	Claude Haiku 5.5
Chess puzzles	55.0%	42.0%	Claude Haiku 5.5
Mystery game puzzles	30.0%	30.0%	Tie
EBR-bench	43.8%	Not measured	Only Claude Haiku 5.5 measured
LMArena Text: hard prompts	Not measured	1486	Only Gemini 3.6 Flash measured
LMArena Text: expert	Not measured	1490	Only Gemini 3.6 Flash measured
LMArena Text: hard prompts in English	Not measured	1484	Only Gemini 3.6 Flash measured
LMArena Vision: diagrams	Not measured	1314	Only Gemini 3.6 Flash measured
LMArena Vision: homework	Not measured	1314	Only Gemini 3.6 Flash measured
Neither model has a result on the other 6 boards here

MathLike-for-likePublic boards, shown as published, kept out of the index40

Math benchmarks for Claude Haiku 5.5 and Gemini 3.6 Flash
Benchmark	Claude Haiku 5.5	Gemini 3.6 Flash	Leader
OTIS Mock AIME	98.9%	94.2%	Claude Haiku 5.5
FrontierMath, tiers 1 to 3	75.1%	58.9%	Claude Haiku 5.5
FrontierMath, tier 4	46.3%	22.0%	Claude Haiku 5.5
ProofBench	89.0%	36.0%	Claude Haiku 5.5
LMArena Text: math	Not measured	1508	Only Gemini 3.6 Flash measured
LMArena Text: mathematical work	Not measured	1492	Only Gemini 3.6 Flash measured
MathArena	Not measured	23.9%	Only Gemini 3.6 Flash measured
Neither model has a result on the other 7 boards here

KnowledgeLike-for-likePublic boards, shown as published, kept out of the index02

Knowledge benchmarks for Claude Haiku 5.5 and Gemini 3.6 Flash
Benchmark	Claude Haiku 5.5	Gemini 3.6 Flash	Leader
MMLU Pro	Not measured	89.3%	Only Gemini 3.6 Flash measured
LegalBench (Vals AI)	Not measured	86.7%	Only Gemini 3.6 Flash measured
CorpFin (Vals AI)	Not measured	63.3%	Only Gemini 3.6 Flash measured
TaxEval (Vals AI)	Not measured	74.9%	Only Gemini 3.6 Flash measured
MortgageTax (Vals AI)	Not measured	67.6%	Only Gemini 3.6 Flash measured
MedCode (Vals AI)	51.5%	53.1%	Gemini 3.6 Flash
SimpleQA Verified	23.8%	66.2%	Gemini 3.6 Flash
LMArena Text: science	Not measured	1489	Only Gemini 3.6 Flash measured
LMArena Text: medicine and healthcare	Not measured	1469	Only Gemini 3.6 Flash measured
LMArena Text: legal and government	Not measured	1479	Only Gemini 3.6 Flash measured
LMArena Text: business and finance	Not measured	1464	Only Gemini 3.6 Flash measured
FACTS Benchmark Suite	Not measured	65.3%	Only Gemini 3.6 Flash measured
Neither model has a result on the other 8 boards here

Web designLike-for-likePublic boards, shown as published, kept out of the index33

Web design benchmarks for Claude Haiku 5.5 and Gemini 3.6 Flash
Benchmark	Claude Haiku 5.5	Gemini 3.6 Flash	Leader
Design Arena: websites	1262	1300	Gemini 3.6 Flash
Design Arena: UI components	1283	1295	Gemini 3.6 Flash
Design Arena: game dev	1315	1263	Claude Haiku 5.5
Design Arena: data viz	1297	1289	Claude Haiku 5.5
Design Arena: 3D	1342	1271	Claude Haiku 5.5
Design Arena: all code categories	1278	1289	Gemini 3.6 Flash
Design Arena: ASCII art	Not measured	1281	Only Gemini 3.6 Flash measured
LiveBench design	83.1%	Not measured	Only Claude Haiku 5.5 measured
Neither model has a result on the other 1 board here

GeneralLike-for-likePublic boards, shown as published, kept out of the index52

General benchmarks for Claude Haiku 5.5 and Gemini 3.6 Flash
Benchmark	Claude Haiku 5.5	Gemini 3.6 Flash	Leader
Vals Index	58.7%	Not measured	Only Claude Haiku 5.5 measured
LiveBench data analysis	53.1%	Not measured	Only Claude Haiku 5.5 measured
Public Benefits Bench (Vals AI)	63.2%	56.6%	Claude Haiku 5.5
SAGE (Vals AI)	45.8%	48.7%	Gemini 3.6 Flash
MedScribe (Vals AI)	89.5%	79.7%	Claude Haiku 5.5
Vals Multimodal Index	Not measured	65.1%	Only Gemini 3.6 Flash measured
Long context reasoning (AA-LCR)	82.7%	80.0%	Claude Haiku 5.5
DTBench	95.0%	95.5%	Gemini 3.6 Flash
LMCA	51.1%	44.9%	Claude Haiku 5.5
Furniture assembly	47.5%	23.3%	Claude Haiku 5.5
LMArena Text	Not measured	1480	Only Gemini 3.6 Flash measured
LMArena Text: instruction following	Not measured	1467	Only Gemini 3.6 Flash measured
LMArena Text: creative writing	Not measured	1466	Only Gemini 3.6 Flash measured
LMArena Vision	Not measured	1299	Only Gemini 3.6 Flash measured
LMArena Text: English	Not measured	1482	Only Gemini 3.6 Flash measured
LMArena Text: non-English	Not measured	1470	Only Gemini 3.6 Flash measured
LMArena Text: Chinese	Not measured	1531	Only Gemini 3.6 Flash measured
LMArena Text: German	Not measured	1480	Only Gemini 3.6 Flash measured
LMArena Text: Japanese	Not measured	1475	Only Gemini 3.6 Flash measured
LMArena Text: Korean	Not measured	1429	Only Gemini 3.6 Flash measured
LMArena Text: French	Not measured	1503	Only Gemini 3.6 Flash measured
LMArena Text: Spanish	Not measured	1476	Only Gemini 3.6 Flash measured
LMArena Text: Russian	Not measured	1488	Only Gemini 3.6 Flash measured
LMArena Text: Polish	Not measured	1473	Only Gemini 3.6 Flash measured
LMArena Text: multi-turn	Not measured	1481	Only Gemini 3.6 Flash measured
LMArena Text: longer queries	Not measured	1475	Only Gemini 3.6 Flash measured
LMArena Text: writing and language	Not measured	1470	Only Gemini 3.6 Flash measured
LMArena Text: entertainment and media	Not measured	1456	Only Gemini 3.6 Flash measured
LMArena Vision: English	Not measured	1295	Only Gemini 3.6 Flash measured
LMArena Vision: Chinese	Not measured	1357	Only Gemini 3.6 Flash measured
LMArena Vision: reading text	Not measured	1312	Only Gemini 3.6 Flash measured
LMArena Vision: humor	Not measured	1289	Only Gemini 3.6 Flash measured
LMArena Vision: creative writing	Not measured	1278	Only Gemini 3.6 Flash measured
LMArena Document	Not measured	1456	Only Gemini 3.6 Flash measured
MultiChallenge	67.7%	Not measured	Only Claude Haiku 5.5 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 5.5 and Gemini 3.6 Flash
Benchmark	Claude Haiku 5.5	Gemini 3.6 Flash	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 5.5$0.0003Fits in one request

Gemini 3.6 Flash$0.0026Fits in one request

Claude Haiku 5.5 costs less

Repository review

50K input + 3K output tokens

Claude Haiku 5.5$0.0065Fits in one request

Gemini 3.6 Flash$0.049Fits in one request

Claude Haiku 5.5 costs less

Agent loop

200K input + 10K output tokens

Claude Haiku 5.5$0.025Fits in one request

Gemini 3.6 Flash$0.188Fits in one request

Claude Haiku 5.5 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 5.5 and Gemini 3.6 Flash
Specification	Anthropic Claude Haiku 5.5	Google Gemini 3.6 Flash
Maker	Anthropic	Google
Weights	No public weights listed	No public weights listed
Released	October 7, 2026	July 21, 2026
Context window	1M	1.05M
Input $/Mtok	$0.10	$0.75
Output $/Mtok	$0.50	$3.75
Coding index	70.7	62.5
Independent measurements behind it	5	4
Cost per solved task	Not computable	$1.49
Source	OpenRouter listing	OpenRouter listing

Questions

Is Claude Haiku 5.5 better than Gemini 3.6 Flash for coding?

Pick Claude Haiku 5.5 for coding: it scores 70.7 on the Vibe Coding Index against 62.5 for Gemini 3.6 Flash. Pick Gemini 3.6 Flash for a larger context window (1.05M against 1M tokens) and work measured by SciCode or Finance Agent (Vals AI), where it leads.

Which is cheaper, Claude Haiku 5.5 or Gemini 3.6 Flash?

Claude Haiku 5.5 costs $0.10 per million input tokens and $0.50 per million output tokens; Gemini 3.6 Flash costs $0.75 and $3.75. Cost per solved task is known for Gemini 3.6 Flash only.

Which has the bigger context window, Claude Haiku 5.5 or Gemini 3.6 Flash?

Gemini 3.6 Flash, with 1.05M tokens against 1M.

How many benchmarks is the Claude Haiku 5.5 vs Gemini 3.6 Flash comparison based on?

45 benchmarks have a result for both models as of October 22, 2026. Claude Haiku 5.5's coding index rests on 5 independent benchmarks and Gemini 3.6 Flash's on 4. Where only one model has a result, the page says so instead of naming a winner.

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Claude Haiku 5.5 or Gemini 3.6 Flash: which to pick

Which one for your work

Coding

Intelligence

Agentic work

Reasoning

Knowledge

Web design

General

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