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SpaceXAI Grok 4.6

  • xAI
  • Released August 12, 2026
  • No public weights listed
  • 500K context

As of October 20, 2026, SpaceXAI Grok 4.6 ranks #16 of 213 models overall with 44.3 on the Artificial Analysis Intelligence Index. Its strongest category is reasoning, where it ranks #7 of 203. SpaceXAI Grok 4.6 costs $2.00 per million input tokens and $6.00 per million output tokens. It was released on August 12, 2026.

Its output price ranks 260 of 349 priced models, counting from the cheapest.

  • Coding index 76.4 Partial, 2 benchmarks
  • Cost per solved task $0.82 One SWE-bench Verified task, solved
  • Output, per million tokens $6.00 260 of 349 from the cheapest
  • Input, per million tokens $2.00 OpenRouter list price
  • Context window 500K Tokens per request

About and specs

Grok 4.6 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM. It is succeeded by [Grok 4.7](/x-ai/grok-4.7).

API model id x-ai/grok-4.6
  • Tool callingListed
  • Structured outputsListed
  • JSON modeListed
  • Reasoning modeListed
  • Web searchNot listed
Takes in
Text, Images, Files
Gives back
Text
Context window
500K tokens
Max output
450K tokens
Knowledge cutoff
Not published
Cached input $/Mtok
$0.50
Cache write $/Mtok
No cache write price listed
Reasoning $/Mtok
Not priced apart
Web search, per request
$0.005
Tokenizer
Grok
Requests moderated
No
Withdrawn on
No date announced
Parameters
Not published
Downloads, all time
No public weights
Training compute
No estimate published
Output speed
Not measured
Time to first token
Not measured
Speed on OpenRouter
64 tokens/s via xAI, 30-minute median
First token on OpenRouter
1.8 s via xAI, 30-minute median

Benchmarks: 124 of 190 measured

The tick on a coding bar is the median of every model measured on it. Outside coding, the place is this model's rank on that board. A board that never ran the model says so.

Coding index

76.4
  • Aider polyglot Not measured
  • SWE-bench Verified Not measured
  • LiveBench coding 89.1% 89 of 100
  • LMArena WebDev Elo, scaled from 1200 to 1900 1617 Elo 60 of 100

The index averages only the coding benchmarks that have a result; the others are skipped, never filled in. How it is weighted

Other public boards

All rankings

Coding23 of 34 boards

17 more coding boards

Not measured on SWE-bench Lite, SWE-bench (full test set), SWE-bench Multimodal, SWE-bench Multilingual, SWE-bench Multimodal (Vals AI), LiveCodeBench (Artificial Analysis run), Terminal-Bench Hard (Artificial Analysis run), Terminal-Bench, GSO-Bench, MirrorCode, Cybench

Intelligence2 of 2 boards

Agentic work22 of 39 boards

16 more agentic work boards

Not measured on Design Arena: spreadsheets, SREBench (Vals AI), Harvey's Legal Agent Benchmark (Vals AI), CUA-bench (Vals AI), Robo-bench (Vals AI), τ²-Bench Telecom, METR time horizons, Remote Labor Index, GDPval, OSWorld 2.0, BALROG, DeepResearch Bench, PostTrainBench, TheAgentCompany, OSWorld, SpireClimb, LMArena Search

Reasoning17 of 21 boards

11 more reasoning boards

Not measured on MMMU Pro (Vals AI), Humanity's Last Exam, VPCT, BIG-Bench Hard

Math6 of 13 boards

Not measured on AIME, MATH 500 (Vals AI), MGSM (Vals AI), AA Math Index, AIME 2025 (Artificial Analysis run), MATH level 5, GSM8K

Knowledge11 of 17 boards

5 more knowledge boards

Not measured on CaseLaw (Vals AI), MedQA (Vals AI), MMLU Pro (Artificial Analysis run), MMLU, GeoBench, AI2 Reasoning Challenge

Web design9 of 9 boards

3 more web design boards

General32 of 46 boards

26 more general boards

Not measured on Vals Index, Vals Multimodal Index, IFBench, Fiction.LiveBench, Creative writing (Lech Mazur), CL-bench, Surface Evolver Bench, ExploitBench, HellaSwag, WinoGrande, PIQA, CL-bench Life, LMArena Vision: captioning, LMArena Vision: recognizing things

Image generation0 of 5 boards

Not measured on Design Arena: images, Design Arena: graphic design, Design Arena: logos, LMArena Text to Image, LMArena Image Edit

Public boards shown as published (Vals AI, Artificial Analysis, Design Arena) and kept out of the coding index. Each links to its source on the benchmark page.

All 190 benchmarks as a table
Benchmark results for SpaceXAI Grok 4.6
BenchmarkResultIndex weight
Aider polyglotCoding Not measured 35%
SWE-bench VerifiedCoding Not measured 30%
SWE-bench LiteCoding Not measured Not in index
SWE-bench (full test set)Coding Not measured Not in index
SWE-bench MultimodalCoding Not measured Not in index
SWE-bench MultilingualCoding Not measured Not in index
LiveBench codingCoding 89.1% 20%
LMArena WebDevCoding 1617 15%
Vals IndexGeneral Not measured Not in index
GPQA DiamondReasoning 94.7% Not in index
AIMEMath Not measured Not in index
MMLU ProKnowledge 89.4% Not in index
AA Intelligence IndexIntelligence 44.3 Not in index
AA Coding IndexCoding 76.8 Not in index
AA Agentic IndexAgentic work 53.0 Not in index
Design Arena: websitesWeb design 1289 Not in index
Design Arena: UI componentsWeb design 1293 Not in index
Design Arena: game devWeb design 1296 Not in index
Design Arena: data vizWeb design 1283 Not in index
Design Arena: 3DWeb design 1277 Not in index
Design Arena: all code categoriesWeb design 1292 Not in index
Design Arena: SVGWeb design 1239 Not in index
Design Arena: ASCII artWeb design 1282 Not in index
Design Arena: agents building web appsAgentic work 1247 Not in index
Design Arena: agents building full-stack appsAgentic work 1264 Not in index
Design Arena: agents building mobile appsAgentic work 1234 Not in index
Design Arena: agents building Android appsAgentic work 1303 Not in index
Design Arena: agents building Godot gamesAgentic work 1276 Not in index
Design Arena: agents building gamesAgentic work 1208 Not in index
Design Arena: HTML slidesAgentic work 1249 Not in index
Design Arena: PowerPoint slidesAgentic work 1241 Not in index
Design Arena: spreadsheetsAgentic work Not measured Not in index
Design Arena: imagesImage generation Not measured Not in index
Design Arena: graphic designImage generation Not measured Not in index
Design Arena: logosImage generation Not measured Not in index
LiveBench reasoningReasoning 91.2% Not in index
LiveBench data analysisGeneral 75.3% Not in index
LiveBench researchAgentic work 84.5% Not in index
LiveBench browserAgentic work 64.0% Not in index
LiveBench long agenticAgentic work 40.7% Not in index
LiveBench designWeb design 79.8% Not in index
LiveCodeBench (Vals AI)Coding 88.2% Not in index
SWE-bench Verified (Vals AI)Coding 95.6% Not in index
Terminal-Bench 4 (Vals AI)Coding 17.2% Not in index
Vibe Code Bench (Vals AI)Coding 76.2% Not in index
Code migration (Vals AI)Coding 44.6% Not in index
ProgramBench (Vals AI)Coding 1.0% Not in index
SREBench (Vals AI)Agentic work Not measured Not in index
IOI (Vals AI)Coding 47.6% Not in index
Terminal-Bench 2.1 (Vals AI)Coding 78.3% Not in index
SWE-bench Multimodal (Vals AI)Coding Not measured Not in index
Vibe Code Bench 1-100 (Vals AI)Coding 14.8% Not in index
SkillsBench (Vals AI)Coding 55.8% Not in index
CyberBench (Vals AI)Coding 67.7% Not in index
Finance Agent (Vals AI)Agentic work 53.7% Not in index
Tax Agent Bench (Vals AI)Agentic work 33.1% Not in index
Legal Research Bench (Vals AI)Agentic work 48.1% Not in index
Harvey's Legal Agent Benchmark (Vals AI)Agentic work Not measured Not in index
Excel Modeling Benchmark (Vals AI)Agentic work 62.7% Not in index
BioMysteryBench (Vals AI)Agentic work 72.2% Not in index
Terminal-Bench-Science (Vals AI)Agentic work 11.4% Not in index
Vals Science IndexAgentic work 38.1% Not in index
Time Horizon Index (Vals AI)Agentic work 5.8% Not in index
CUA-bench (Vals AI)Agentic work Not measured Not in index
Robo-bench (Vals AI)Agentic work Not measured Not in index
Public Benefits Bench (Vals AI)General 66.8% Not in index
MysteryMechanism (Vals AI)Reasoning 30.6% Not in index
MMMU Pro (Vals AI)Reasoning Not measured Not in index
MATH 500 (Vals AI)Math Not measured Not in index
MGSM (Vals AI)Math Not measured Not in index
SAGE (Vals AI)General 28.9% Not in index
LegalBench (Vals AI)Knowledge 86.3% Not in index
CaseLaw (Vals AI)Knowledge Not measured Not in index
CorpFin (Vals AI)Knowledge 66.2% Not in index
TaxEval (Vals AI)Knowledge 71.1% Not in index
MortgageTax (Vals AI)Knowledge 64.2% Not in index
MedQA (Vals AI)Knowledge Not measured Not in index
MedCode (Vals AI)Knowledge 44.7% Not in index
MedScribe (Vals AI)General 86.5% Not in index
Vals Multimodal IndexGeneral Not measured Not in index
AA Math IndexMath Not measured Not in index
GPQA Diamond (Artificial Analysis run)Reasoning 94.9% Not in index
Humanity's Last Exam (Artificial Analysis run)Reasoning 44.1% Not in index
MMLU Pro (Artificial Analysis run)Knowledge Not measured Not in index
LiveCodeBench (Artificial Analysis run)Coding Not measured Not in index
SciCodeCoding 56.5% Not in index
Terminal-Bench Hard (Artificial Analysis run)Coding Not measured Not in index
IFBenchGeneral Not measured Not in index
Long context reasoning (AA-LCR)General 81.0% Not in index
τ²-Bench TelecomAgentic work Not measured Not in index
AIME 2025 (Artificial Analysis run)Math Not measured Not in index
Terminal-BenchCoding Not measured Not in index
DeepSWECoding 67.5% Not in index
FrontierCodeCoding 48.0% Not in index
FrontierSWECoding 25.3% Not in index
GSO-BenchCoding Not measured Not in index
WeirdMLCoding 67.3% Not in index
MirrorCodeCoding Not measured Not in index
APEX-AgentsAgentic work 65.3% Not in index
METR time horizonsAgentic work Not measured Not in index
Remote Labor IndexAgentic work Not measured Not in index
GDPvalAgentic work Not measured Not in index
OSWorld 2.0Agentic work Not measured Not in index
BALROGAgentic work Not measured Not in index
DeepResearch BenchAgentic work Not measured Not in index
PostTrainBenchAgentic work Not measured Not in index
GPQA Diamond (Epoch AI run)Reasoning 94.0% Not in index
ARC-AGIReasoning 87.5% Not in index
ARC-AGI-2Reasoning 67.1% Not in index
Humanity's Last ExamReasoning Not measured Not in index
SimpleBenchReasoning 75.9% Not in index
Chess puzzlesReasoning 33.0% Not in index
Mystery game puzzlesReasoning 34.0% Not in index
EBR-benchReasoning 30.5% Not in index
OTIS Mock AIMEMath 99.2% Not in index
FrontierMath, tiers 1 to 3Math 66.0% Not in index
FrontierMath, tier 4Math 31.7% Not in index
ProofBenchMath 51.0% Not in index
MATH level 5Math Not measured Not in index
GSM8KMath Not measured Not in index
SimpleQA VerifiedKnowledge 49.3% Not in index
MMLUKnowledge Not measured Not in index
GeoBenchKnowledge Not measured Not in index
DTBenchGeneral 97.3% Not in index
LMCAGeneral 48.5% Not in index
Fiction.LiveBenchGeneral Not measured Not in index
Creative writing (Lech Mazur)General Not measured Not in index
CL-benchGeneral Not measured Not in index
Surface Evolver BenchGeneral Not measured Not in index
Furniture assemblyGeneral 40.0% Not in index
ExploitBenchGeneral Not measured Not in index
CybenchCoding Not measured Not in index
TheAgentCompanyAgentic work Not measured Not in index
OSWorldAgentic work Not measured Not in index
SpireClimbAgentic work Not measured Not in index
VPCTReasoning Not measured Not in index
BIG-Bench HardReasoning Not measured Not in index
AI2 Reasoning ChallengeKnowledge Not measured Not in index
HellaSwagGeneral Not measured Not in index
WinoGrandeGeneral Not measured Not in index
PIQAGeneral Not measured Not in index
CL-bench LifeGeneral Not measured Not in index
ALE-BenchCoding 1508.1 Not in index
Vending-Bench 2Agentic work $9,047 Not in index
Epoch Capabilities IndexIntelligence 156.3 Not in index
LMArena TextGeneral 1428 Not in index
LMArena Text: codingCoding 1465 Not in index
LMArena Text: hard promptsReasoning 1447 Not in index
LMArena Text: mathMath 1416 Not in index
LMArena Text: instruction followingGeneral 1431 Not in index
LMArena Text: creative writingGeneral 1427 Not in index
LMArena VisionGeneral 1263 Not in index
LMArena Text: EnglishGeneral 1433 Not in index
LMArena Text: non-EnglishGeneral 1419 Not in index
LMArena Text: ChineseGeneral 1475 Not in index
LMArena Text: GermanGeneral 1432 Not in index
LMArena Text: JapaneseGeneral 1380 Not in index
LMArena Text: KoreanGeneral 1396 Not in index
LMArena Text: FrenchGeneral 1457 Not in index
LMArena Text: SpanishGeneral 1404 Not in index
LMArena Text: RussianGeneral 1422 Not in index
LMArena Text: PolishGeneral 1430 Not in index
LMArena Text: multi-turnGeneral 1424 Not in index
LMArena Text: longer queriesGeneral 1455 Not in index
LMArena Text: expertReasoning 1468 Not in index
LMArena Text: hard prompts in EnglishReasoning 1444 Not in index
LMArena Text: software and ITCoding 1457 Not in index
LMArena Text: mathematical workMath 1464 Not in index
LMArena Text: scienceKnowledge 1437 Not in index
LMArena Text: medicine and healthcareKnowledge 1421 Not in index
LMArena Text: legal and governmentKnowledge 1427 Not in index
LMArena Text: business and financeKnowledge 1416 Not in index
LMArena Text: writing and languageGeneral 1429 Not in index
LMArena Text: entertainment and mediaGeneral 1421 Not in index
LMArena WebDev: ReactCoding 1631 Not in index
LMArena WebDev: HTMLCoding 1597 Not in index
LMArena WebDev: from an imageCoding 1603 Not in index
LMArena Vision: EnglishGeneral 1270 Not in index
LMArena Vision: ChineseGeneral 1289 Not in index
LMArena Vision: reading textGeneral 1272 Not in index
LMArena Vision: diagramsReasoning 1285 Not in index
LMArena Vision: homeworkReasoning 1283 Not in index
LMArena Vision: humorGeneral 1270 Not in index
LMArena Vision: captioningGeneral Not measured Not in index
LMArena Vision: recognizing thingsGeneral Not measured Not in index
LMArena Vision: creative writingGeneral 1262 Not in index
LMArena SearchAgentic work Not measured Not in index
LMArena DocumentGeneral 1452 Not in index
LMArena Text to ImageImage generation Not measured Not in index
LMArena Image EditImage generation Not measured Not in index

What it costs

A list price says what a token costs. The cost per solved task says what a working answer costs, which is the number that decides.

Output price against the market

Grok 4.6 pricing
$0.0112Dashed line: median $1.80, log scale$600.00
$6.00 per million output tokens is cheaper than 23% of the 344 paid models in the catalog.

Cost per solved task

How it is computed
$0.78one attempt, Vals AI 95.6%tasks solved $0.82per solved task

Nearly as good as Grok 4.6, for less

What the boards say about its runs

Beside a result, many boards publish what the run cost, how long it took, the tokens it spent or the votes behind a rating. Each figure as its board printed it, one board per row.

What each board publishes about the runs behind SpaceXAI: Grok 4.6's results
BoardResultWhat the run costAlso published
LiveBench coding 89.1% $1.8584 per task Output tokens per task 25,609
LiveBench reasoning 91.2% $0.0873 per task Output tokens per task 14,139
LiveBench data analysis 75.3% $0.123 per task Output tokens per task 19,229
LiveBench research 84.5% $2.3255 per task Output tokens per task 28,110
LiveBench browser 64.0% $2.9212 per task Output tokens per task 16,144
LiveBench long agentic 40.7% $10.6258 per task Output tokens per task 128,260
LiveBench design 79.8% $1.2666 per task Output tokens per task 46,787
SWE-bench Verified (Vals AI) 95.6% $0.78 per test Duration, as printed 10m 04s
Terminal-Bench 4 (Vals AI) 17.2% $5.06 per test Duration, as printed 29m 25s
Vibe Code Bench (Vals AI) 76.2% $4.88 per test Duration, as printed 25m 30s
Code migration (Vals AI) 44.6% $14.58 per test Duration, as printed 1h 30m
ProgramBench (Vals AI) 1.0% $16.76 per test Duration, as printed 4h 27m
71 more boards
What each board publishes about the runs behind SpaceXAI: Grok 4.6's results, continued
IOI (Vals AI) 47.6% $8.18 per test Duration, as printed 3h 57m
Terminal-Bench 2.1 (Vals AI) 78.3% $0.45 per test Duration, as printed 10m 43s
Vibe Code Bench 1-100 (Vals AI) 14.8% $26.27 per test Duration, as printed 2h 11m
SkillsBench (Vals AI) 55.8% $0.92 per test Duration, as printed 13m 28s
CyberBench (Vals AI) 67.7% $4.07 per test Duration, as printed 36m 52s
Finance Agent (Vals AI) 53.7% $1.66 per test Duration, as printed 16m 41s
Tax Agent Bench (Vals AI) 33.1% $0.98 per test Duration, as printed 10m 58s
Legal Research Bench (Vals AI) 48.1% $1.53 per test Duration, as printed 25m 04s
Excel Modeling Benchmark (Vals AI) 62.7% $3.06 per test Duration, as printed 52m 59s
BioMysteryBench (Vals AI) 72.2% $1.23 per test Duration, as printed 14m 18s
Terminal-Bench-Science (Vals AI) 11.4% $4.82 per test Duration, as printed 1h 18m
Vals Science Index 38.1% $2.45 per test Duration, as printed 40m 10s
Public Benefits Bench (Vals AI) 66.8% $0.92 per test Nothing else
MysteryMechanism (Vals AI) 30.6% $1.31 per test Duration, as printed 27m 55s
DeepSWE 67.5% $3.449 mean cost per task Solved in 4 tries 84.1% · Output tokens per task 49,764 · Agent steps per task 70
FrontierSWE 25.3% $243.43 average cost per task Best of 5 runs 37.3% · Hours per task 13.8 h
WeirdML 67.3% $0.3348 per run Median lines of code 205
ProofBench 51.0% $0.759 per test Time per proof 14m 22s
ALE-Bench 1508.1 $0.2401 per problem Tokens per problem 42,843
LMArena WebDev 1617 Elo Not published Votes 10,483 · Interval (±) ±7.3
GPQA Diamond 94.7% Not published Latency, as printed 3m 29s
MMLU Pro 89.4% Not published Latency, as printed 55 s
LiveCodeBench (Vals AI) 88.2% Not published Latency, as printed 1m 58s
SAGE (Vals AI) 28.9% Not published Latency, as printed 3m 22s
LegalBench (Vals AI) 86.3% Not published Latency, as printed 27 s
CorpFin (Vals AI) 66.2% Not published Latency, as printed 24 s
TaxEval (Vals AI) 71.1% Not published Latency, as printed 48 s
MortgageTax (Vals AI) 64.2% Not published Latency, as printed 8.6 s
MedCode (Vals AI) 44.7% Not published Latency, as printed 2m 07s
MedScribe (Vals AI) 86.5% Not published Latency, as printed 1m 11s
APEX-Agents 65.3% Not published Mean score 77.3%
LMArena Text 1428 Elo Not published Votes 28,965 · Interval (±) ±4.8
LMArena Text: coding 1465 Elo Not published Votes 7,222 · Interval (±) ±7.7
LMArena Text: hard prompts 1447 Elo Not published Votes 18,782 · Interval (±) ±5.6
LMArena Text: math 1416 Elo Not published Votes 1,421 · Interval (±) ±15.8
LMArena Text: instruction following 1431 Elo Not published Votes 10,340 · Interval (±) ±6.8
LMArena Text: creative writing 1427 Elo Not published Votes 6,434 · Interval (±) ±8.5
LMArena Vision 1263 Elo Not published Votes 7,261 · Interval (±) ±8.3
LMArena Text: English 1433 Elo Not published Votes 11,735 · Interval (±) ±6.4
LMArena Text: non-English 1419 Elo Not published Votes 17,226 · Interval (±) ±5.7
LMArena Text: Chinese 1475 Elo Not published Votes 2,314 · Interval (±) ±12.8
LMArena Text: German 1432 Elo Not published Votes 507 · Interval (±) ±27.1
LMArena Text: Japanese 1380 Elo Not published Votes 497 · Interval (±) ±28.9
LMArena Text: Korean 1396 Elo Not published Votes 567 · Interval (±) ±25.8
LMArena Text: French 1457 Elo Not published Votes 840 · Interval (±) ±21.5
LMArena Text: Spanish 1404 Elo Not published Votes 789 · Interval (±) ±21.1
LMArena Text: Russian 1422 Elo Not published Votes 3,634 · Interval (±) ±10.2
LMArena Text: Polish 1430 Elo Not published Votes 436 · Interval (±) ±27.6
LMArena Text: multi-turn 1424 Elo Not published Votes 4,363 · Interval (±) ±9.5
LMArena Text: longer queries 1455 Elo Not published Votes 13,401 · Interval (±) ±6.4
LMArena Text: expert 1468 Elo Not published Votes 3,311 · Interval (±) ±10.7
LMArena Text: hard prompts in English 1444 Elo Not published Votes 7,574 · Interval (±) ±7.6
LMArena Text: software and IT 1457 Elo Not published Votes 10,857 · Interval (±) ±6.6
LMArena Text: mathematical work 1464 Elo Not published Votes 1,710 · Interval (±) ±14.7
LMArena Text: science 1437 Elo Not published Votes 4,815 · Interval (±) ±9.0
LMArena Text: medicine and healthcare 1421 Elo Not published Votes 2,044 · Interval (±) ±13.6
LMArena Text: legal and government 1427 Elo Not published Votes 2,481 · Interval (±) ±12.3
LMArena Text: business and finance 1416 Elo Not published Votes 5,368 · Interval (±) ±8.6
LMArena Text: writing and language 1429 Elo Not published Votes 8,265 · Interval (±) ±7.5
LMArena Text: entertainment and media 1421 Elo Not published Votes 7,591 · Interval (±) ±7.9
LMArena WebDev: React 1631 Elo Not published Votes 6,746 · Interval (±) ±8.7
LMArena WebDev: HTML 1597 Elo Not published Votes 1,670 · Interval (±) ±15.9
LMArena WebDev: from an image 1603 Elo Not published Votes 3,241 · Interval (±) ±11.1
LMArena Vision: English 1270 Elo Not published Votes 2,512 · Interval (±) ±12.9
LMArena Vision: Chinese 1289 Elo Not published Votes 380 · Interval (±) ±30.7
LMArena Vision: reading text 1272 Elo Not published Votes 4,881 · Interval (±) ±9.2
LMArena Vision: diagrams 1285 Elo Not published Votes 1,838 · Interval (±) ±14.2
LMArena Vision: homework 1283 Elo Not published Votes 873 · Interval (±) ±19.9
LMArena Vision: humor 1270 Elo Not published Votes 320 · Interval (±) ±32.5
LMArena Vision: creative writing 1262 Elo Not published Votes 714 · Interval (±) ±23.5
LMArena Document 1452 Elo Not published Votes 2,258 · Interval (±) ±12.0

On these lists

Compare with models of a similar score

All 135 comparisons for Grok 4.6