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Data checked September 25, 2026
Data checked September 25, 2026
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T/TTokens or Towers

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Data checked September 25, 2026 · Every number links to its sourceRSS · Source on GitHub
Leaderboard/xAI
xAI

xAI · Grok 4

Grok 4.6

Closed weightsSupersededNewproprietary

Previous Grok flagship (August 2026), same price as Grok 4.7.

AA Intelligence
44.3#13 of 142
Input / output per 1M
$2.00/ $6.00
Output speed
66tok/s
Context window
500K tokens

Composite indexes

  • Artificial Analysis Intelligence Index#13 of 142
    44independentAA Intelligence Index v4.3.2, highArtificial Analysis: Grok 4.6 (high) ↗

    Leader: Claude Opus 5.5 at 58

Coding

  • Terminal-Bench 4.0#21 of 88
    21.2%independentTerminal-Bench 4.0 (AA harness), highArtificial Analysis: Grok 4.6 (high) ↗

    Leader: Claude Mythos 5.1 at 60.9%

  • SciCode#19 of 94
    56.5%independenthighArtificial Analysis: Grok 4.6 (high) ↗

    Leader: Claude Opus 5.5 at 66.9%

Agents and tool use

  • GDPval-AA#11 of 103
    1606independentGDPval-AA, highArtificial Analysis: Grok 4.6 (high) ↗

    Leader: Claude Opus 5.5 at 1846

Reasoning and knowledge

  • Humanity’s Last Exam#24 of 147
    42.9%independentno tools (AA), highArtificial Analysis: Grok 4.6 (high) ↗

    Leader: Claude Opus 5.5 at 61.4%

  • GPQA Diamond#6 of 142
    94.9%independentAA, highArtificial Analysis: Grok 4.6 (high) ↗

    Leader: GPT-6 Astra at 96.1%

  • CritPt#25 of 139
    17.1%independenthighArtificial Analysis: Grok 4.6 (high) ↗

    Leader: GPT-5.6 Sol at 32.3%

  • ARC-AGI-2#13 of 25
    67.1%independentsemi-private, XHighARC Prize leaderboard ↗

    Leader: GPT-6 Astra at 95%

  • ARC-AGI-3#5 of 9
    2.1%independentsemi-private, XHighARC Prize leaderboard ↗

    Leader: GPT-6 Astra at 62.7%

Vision and long context

  • AA Long Context Reasoning#26 of 139
    80.3%independenthighArtificial Analysis: Grok 4.6 (high) ↗

    Leader: Kimi K3 at 88.7%

Human preference

  • LMArena Text#28 of 54
    1456independentgrok-4.6-high, style control default, vote cutoff 2026-09-13LMArena Text leaderboard ↗

    Leader: Claude Fable 5 at 1506

  • LMArena WebDev#13 of 54
    1624independentgrok-4.6-high, LMArena Code arena (formerly WebDev), vote cutoff 2026-09-23LMArena Code (WebDev) leaderboard ↗

    Leader: Claude Opus 5.5 at 1818

Other published results

ResultScoreReported bySource
AA-Omniscience Index · high30.5 index (-100 to 100)independentArtificial Analysis: Grok 4.6 (high) ↗
AutomationBench-AA (partial score) · high66.7%independentArtificial Analysis: Grok 4.6 (high) ↗
Terminal-Bench Science (AA) · high6.2%independentArtificial Analysis: Grok 4.6 (high) ↗
AA Coding Agent Index v1.5 · Grok Build + Grok 4.6 (xhigh); DeepSWE 64.9 / SWE-Atlas-QnA 58.3 / TB4 17.747 indexindependentArtificial Analysis Coding Agents ↗
CursorBench 4.0 · High40.4%vendorxAI: Grok 4.7 (comparison table) ↗
DeepSWE v1.1 · High65.2%vendorxAI: Grok 4.7 (comparison table) ↗

Specs

Released
August 12, 2026
Parameters
Undisclosed
Size class
Undisclosed
Input
text, image
Output
text
Context
500K tokens
Max output
Not published
Cached input
$0.50 / 1M
Blended 70/30
$3.20 / 1M
First token
40.80s
  • Price: xAI (SpaceXAI) API pricing ↗ Standard, short context.
  • Speed: Artificial Analysis: Grok 4.6 (high) (median output speed; TTFT is time to first chunk incl. reasoning) ↗

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