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Claude Haiku 4.5 vs Grok 4.6

Updated October 21, 2026. 81 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace Claude Haiku 4.5 Replace Grok 4.6
Claude Haiku 4.5Anthropic
Coding
49.8
Overall
16.9
Output $/M
$5.00
2
Grok 4.6xAI
Coding
76.4
Overall
44.3
Output $/M
$6.00
79
vs boards won of 81 shared

Decision reading

Pick Grok 4.6 for coding: it scores 76.4 on the Vibe Coding Index against 49.8 for Claude Haiku 4.5, though on 2 benchmarks against 3.

Pick Claude Haiku 4.5 when output tokens cost 1.2x less, or when a solved task costs $0.56 against $0.82.

Model AClaude Haiku 4.5Anthropic49.8/1003 independent benchmarks$0.56 per solved taskModel BGrok 4.6xAI76.4/1002 independent benchmarks$0.82 per solved task
Shared results
81
Claude Haiku 4.5 only
13
Grok 4.6 only
42
Like-for-like categories
8 of 9

Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.

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 49.8 from 3 benchmarks, Grok 4.6 76.4 from 2 benchmarks.
Widest category
Agentic work, 35.8 points apart on average over 9 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): Claude Haiku 4.5 11.4% against Grok 4.6 76.2%, 64.8 points apart on a 0 to 100 scale.
Output price
Claude Haiku 4.5 $5.00 against Grok 4.6 $6.00 per million output tokens, 1.2x apart.
Context window
Claude Haiku 4.5 takes 200K tokens, Grok 4.6 500K.

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 4.5BarsGrok 4.6Ties
Coding014
Intelligence02
Agentic work09
Reasoning09
Math03
Knowledge011
Web design09
General222
All shared boards279
CodingLike-for-likeFour of these boards feed the Vibe Coding Index014
Coding benchmarks for Claude Haiku 4.5 and Grok 4.6
BenchmarkClaude Haiku 4.5Grok 4.6Leader
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%89.1%Grok 4.6
LMArena WebDev13301617Grok 4.6
AA Coding Index43.976.8Grok 4.6
LiveCodeBench (Vals AI)41.2%88.2%Grok 4.6
SWE-bench Verified (Vals AI)66.6%95.6%Grok 4.6
Terminal-Bench 4 (Vals AI)Not measured17.2%Only Grok 4.6 measured
Vibe Code Bench (Vals AI)11.4%76.2%Grok 4.6
Code migration (Vals AI)7.5%44.6%Grok 4.6
ProgramBench (Vals AI)0.0%1.0%Grok 4.6
IOI (Vals AI)Not measured47.6%Only Grok 4.6 measured
Terminal-Bench 2.1 (Vals AI)43.8%78.3%Grok 4.6
Vibe Code Bench 1-100 (Vals AI)Not measured14.8%Only Grok 4.6 measured
SkillsBench (Vals AI)Not measured55.8%Only Grok 4.6 measured
CyberBench (Vals AI)Not measured67.7%Only Grok 4.6 measured
SciCodeNot measured56.5%Only Grok 4.6 measured
Terminal-Bench35.5%Not measuredOnly Claude Haiku 4.5 measured
FrontierCodeNot measured48.0%Only Grok 4.6 measured
FrontierSWENot measured25.3%Only Grok 4.6 measured
WeirdML45.4%67.3%Grok 4.6
ALE-BenchNot measured1508.1Only Grok 4.6 measured
LMArena Text: coding14541466Grok 4.6
LMArena Text: software and IT14391457Grok 4.6
LMArena WebDev: React13261631Grok 4.6
LMArena WebDev: HTML13181597Grok 4.6
LMArena WebDev: from an imageNot measured1603Only Grok 4.6 measured
Neither model has a result on the other 11 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
Intelligence benchmarks for Claude Haiku 4.5 and Grok 4.6
BenchmarkClaude Haiku 4.5Grok 4.6Leader
AA Intelligence Index16.944.3Grok 4.6
Epoch Capabilities Index142.2156.6Grok 4.6
Agentic workLike-for-likePublic boards, shown as published, kept out of the index09
Agentic work benchmarks for Claude Haiku 4.5 and Grok 4.6
BenchmarkClaude Haiku 4.5Grok 4.6Leader
AA Agentic Index8.053.0Grok 4.6
Design Arena: agents building web appsNot measured1247Only Grok 4.6 measured
Design Arena: agents building full-stack appsNot measured1264Only Grok 4.6 measured
Design Arena: agents building mobile appsNot measured1234Only Grok 4.6 measured
Design Arena: agents building Android appsNot measured1297Only Grok 4.6 measured
Design Arena: agents building Godot gamesNot measured1276Only Grok 4.6 measured
Design Arena: agents building gamesNot measured1208Only Grok 4.6 measured
Design Arena: HTML slidesNot measured1249Only Grok 4.6 measured
Design Arena: PowerPoint slidesNot measured1241Only Grok 4.6 measured
LiveBench research42.2%84.5%Grok 4.6
LiveBench browser40.0%64.0%Grok 4.6
LiveBench long agentic11.1%40.7%Grok 4.6
Finance Agent (Vals AI)31.0%53.7%Grok 4.6
Tax Agent Bench (Vals AI)5.9%33.1%Grok 4.6
Legal Research Bench (Vals AI)10.6%48.1%Grok 4.6
Excel Modeling Benchmark (Vals AI)22.7%62.7%Grok 4.6
BioMysteryBench (Vals AI)Not measured72.2%Only Grok 4.6 measured
Terminal-Bench-Science (Vals AI)Not measured11.4%Only Grok 4.6 measured
Vals Science IndexNot measured38.1%Only Grok 4.6 measured
Time Horizon Index (Vals AI)Not measured5.8%Only Grok 4.6 measured
APEX-AgentsNot measured65.3%Only Grok 4.6 measured
BALROG31.2%Not measuredOnly Claude Haiku 4.5 measured
DeepResearch Bench45.5%Not measuredOnly Claude Haiku 4.5 measured
Vending-Bench 2$459$9,047Grok 4.6
Neither model has a result on the other 15 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index09
Reasoning benchmarks for Claude Haiku 4.5 and Grok 4.6
BenchmarkClaude Haiku 4.5Grok 4.6Leader
GPQA Diamond72.2%94.7%Grok 4.6
LiveBench reasoning61.7%91.2%Grok 4.6
MysteryMechanism (Vals AI)Not measured30.6%Only Grok 4.6 measured
MMMU Pro (Vals AI)46.1%Not measuredOnly Claude Haiku 4.5 measured
GPQA Diamond (Artificial Analysis run)Not measured94.9%Only Grok 4.6 measured
Humanity's Last Exam (Artificial Analysis run)Not measured44.1%Only Grok 4.6 measured
GPQA Diamond (Epoch AI run)71.2%94.0%Grok 4.6
ARC-AGI47.7%87.5%Grok 4.6
ARC-AGI-24.0%67.1%Grok 4.6
SimpleBenchNot measured75.9%Only Grok 4.6 measured
Chess puzzles8.0%33.0%Grok 4.6
Mystery game puzzlesNot measured34.0%Only Grok 4.6 measured
EBR-benchNot measured30.5%Only Grok 4.6 measured
LMArena Text: hard prompts14211448Grok 4.6
LMArena Text: expert14431469Grok 4.6
LMArena Text: hard prompts in English14351445Grok 4.6
LMArena Vision: diagramsNot measured1285Only Grok 4.6 measured
LMArena Vision: homeworkNot measured1283Only Grok 4.6 measured
Neither model has a result on the other 3 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index03
Math benchmarks for Claude Haiku 4.5 and Grok 4.6
BenchmarkClaude Haiku 4.5Grok 4.6Leader
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%99.2%Grok 4.6
FrontierMath, tiers 1 to 3Not measured66.0%Only Grok 4.6 measured
FrontierMath, tier 4Not measured31.7%Only Grok 4.6 measured
ProofBenchNot measured51.0%Only Grok 4.6 measured
MATH level 596.4%Not measuredOnly Claude Haiku 4.5 measured
LMArena Text: math13981417Grok 4.6
LMArena Text: mathematical work14301464Grok 4.6
Neither model has a result on the other 4 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index011
Knowledge benchmarks for Claude Haiku 4.5 and Grok 4.6
BenchmarkClaude Haiku 4.5Grok 4.6Leader
MMLU Pro78.7%89.4%Grok 4.6
LegalBench (Vals AI)81.2%86.3%Grok 4.6
CaseLaw (Vals AI)56.5%Not measuredOnly Claude Haiku 4.5 measured
CorpFin (Vals AI)60.6%66.2%Grok 4.6
TaxEval (Vals AI)67.5%71.1%Grok 4.6
MortgageTax (Vals AI)62.2%64.2%Grok 4.6
MedQA (Vals AI)79.6%Not measuredOnly Claude Haiku 4.5 measured
MedCode (Vals AI)32.7%44.7%Grok 4.6
SimpleQA Verified13.2%49.3%Grok 4.6
LMArena Text: science14061437Grok 4.6
LMArena Text: medicine and healthcare13941420Grok 4.6
LMArena Text: legal and government14001429Grok 4.6
LMArena Text: business and finance14001416Grok 4.6
Neither model has a result on the other 4 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index09
Web design benchmarks for Claude Haiku 4.5 and Grok 4.6
BenchmarkClaude Haiku 4.5Grok 4.6Leader
Design Arena: websites11221289Grok 4.6
Design Arena: UI components11001294Grok 4.6
Design Arena: game dev10971296Grok 4.6
Design Arena: data viz11241283Grok 4.6
Design Arena: 3D10721277Grok 4.6
Design Arena: all code categories11151292Grok 4.6
Design Arena: SVG10251239Grok 4.6
Design Arena: ASCII art11391278Grok 4.6
LiveBench design59.9%79.8%Grok 4.6
GeneralLike-for-likePublic boards, shown as published, kept out of the index222
General benchmarks for Claude Haiku 4.5 and Grok 4.6
BenchmarkClaude Haiku 4.5Grok 4.6Leader
LiveBench data analysis59.3%75.3%Grok 4.6
Public Benefits Bench (Vals AI)54.3%66.8%Grok 4.6
SAGE (Vals AI)31.8%28.9%Claude Haiku 4.5
MedScribe (Vals AI)85.2%86.5%Grok 4.6
Vals Multimodal Index42.9%Not measuredOnly Claude Haiku 4.5 measured
Long context reasoning (AA-LCR)Not measured81.0%Only Grok 4.6 measured
DTBench73.6%97.3%Grok 4.6
LMCA30.9%48.5%Grok 4.6
Furniture assemblyNot measured40.0%Only Grok 4.6 measured
ExploitBench13.7%Not measuredOnly Claude Haiku 4.5 measured
LMArena Text13971429Grok 4.6
LMArena Text: instruction following14141431Grok 4.6
LMArena Text: creative writing13711426Grok 4.6
LMArena VisionNot measured1263Only Grok 4.6 measured
LMArena Text: English14141433Grok 4.6
LMArena Text: non-English13771420Grok 4.6
LMArena Text: Chinese14181476Grok 4.6
LMArena Text: German13741426Grok 4.6
LMArena Text: Japanese13381378Grok 4.6
LMArena Text: Korean13461391Grok 4.6
LMArena Text: French14111455Grok 4.6
LMArena Text: Spanish14211414Claude Haiku 4.5
LMArena Text: Russian13811421Grok 4.6
LMArena Text: Polish13431430Grok 4.6
LMArena Text: multi-turn14091425Grok 4.6
LMArena Text: longer queries14271456Grok 4.6
LMArena Text: writing and language13861429Grok 4.6
LMArena Text: entertainment and media13691421Grok 4.6
LMArena Vision: EnglishNot measured1270Only Grok 4.6 measured
LMArena Vision: ChineseNot measured1289Only Grok 4.6 measured
LMArena Vision: reading textNot measured1272Only Grok 4.6 measured
LMArena Vision: humorNot measured1270Only Grok 4.6 measured
LMArena Vision: creative writingNot measured1262Only Grok 4.6 measured
LMArena Document14201452Grok 4.6
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 Grok 4.6
BenchmarkClaude Haiku 4.5Grok 4.6Leader
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
Grok 4.6$0.0050Fits in one request

Claude Haiku 4.5 costs less

Repository review

50K input + 3K output tokens

Claude Haiku 4.5$0.065Fits in one request
Grok 4.6$0.118Fits in one request

Claude Haiku 4.5 costs less

Agent loop

200K input + 10K output tokens

Claude Haiku 4.5$0.250Exceeds the context window
Grok 4.6$0.460Fits in one request

Claude Haiku 4.5 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 4.5 and Grok 4.6
SpecificationAnthropic Claude Haiku 4.5SpaceXAI Grok 4.6
MakerAnthropicxAI
WeightsNo public weights listedNo public weights listed
ReleasedOctober 15, 2025August 12, 2026
Context window200K500K
Input $/Mtok$1.00$2.00
Output $/Mtok$5.00$6.00
Coding index49.876.4
Independent measurements behind it32
Cost per solved task$0.56$0.82
SourceOpenRouter listingOpenRouter listing

Questions

Is Claude Haiku 4.5 better than Grok 4.6 for coding?

Pick Grok 4.6 for coding: it scores 76.4 on the Vibe Coding Index against 49.8 for Claude Haiku 4.5, though on 2 benchmarks against 3. Pick Claude Haiku 4.5 when output tokens cost 1.2x less, or when a solved task costs $0.56 against $0.82.

Which is cheaper, Claude Haiku 4.5 or Grok 4.6?

Claude Haiku 4.5 costs $1.00 per million input tokens and $5.00 per million output tokens; Grok 4.6 costs $2.00 and $6.00. Per solved SWE-bench Verified task, Claude Haiku 4.5 costs $0.56 and Grok 4.6 $0.82.

Which has the bigger context window, Claude Haiku 4.5 or Grok 4.6?

Grok 4.6, with 500K tokens against 200K.

How many benchmarks is the Claude Haiku 4.5 vs Grok 4.6 comparison based on?

81 benchmarks have a result for both models as of October 21, 2026. Claude Haiku 4.5's coding index rests on 3 independent benchmarks and Grok 4.6's on 2. Where only one model has a result, the page says so instead of naming a winner.

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