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Model vendor

xAI

Elon Musk AI company

Updated Aug 11, 2026. Data as of 2026-08-11

Website
Models25
Versions25
Open defaults0
CountryUS

On this page

  • Models
  • Scores
  • Highlights
  • About
  • FAQ

xAI models

Default-version specifications and scored-version capability values are labeled separately.

25 rows
Columns

Show columns

XAGrok 4.5xAIGrok 4.582.240.0%500KClosed weightsJul 16, 2026Grok 4.5
XAGrok 4 HeavyxAIGrok-4 Heavy68.280.0%N/AClosed weightsN/AGrok-4 Heavy
XAGrok 4.20 Beta ReasoningxAIGrok-4.20 Beta Reasoning57.10.0%2MClosed weightsMar 9, 2026Grok-4.20 Beta Reasoning
XAGrok 4xAIGrok-456.580.0%256KClosed weightsJul 9, 2025Grok-4
XAGrok 3xAIGrok-354.860.0%128KClosed weightsFeb 17, 2025Grok-3
XAGrok 4 FastxAIGrok 4 Fast54.080.0%2MClosed weightsAug 28, 2025Grok 4 Fast
XAGrok 4.1 ThinkingxAIGrok-4.1 Thinking51.220.0%256KClosed weightsNov 17, 2025Grok-4.1 Thinking
XAGrok 3 MinixAIGrok-3 Mini48.460.0%128KClosed weightsFeb 17, 2025Grok-3 Mini
XAGrok 4.1xAIGrok-4.146.620.0%256KClosed weightsNov 17, 2025Grok-4.1
XAGrok 4.3xAIGrok 4.340.70.0%1MClosed weightsMay 6, 2026Grok 4.3
XAGrok Code Fast 1xAIGrok Code Fast 136.020.0%256KClosed weightsAug 28, 2025Grok Code Fast 1
XAGrok 2xAIGrok-221.080.0%128KClosed weightsAug 13, 2024Grok-2
XAGrok 2 minixAIGrok-2 mini16.380.0%N/AClosed weightsAug 13, 2024Grok-2 mini
XAGrok 1.5VxAIGrok-1.5V1.30.0%N/AClosed weightsApr 12, 2024Grok-1.5V
XAGrok 1.5xAIGrok-1.50.080.0%N/AClosed weightsMar 28, 2024Grok-1.5
XAGrok 2 ImagexAIGrok-2 Image 1212N/AN/A131.1KClosed weightsDec 12, 2024Not scored
XAGrok 4 Fast Non ReasoningxAIGrok-4 Fast Non-ReasoningN/AN/A2MClosed weightsAug 28, 2025Not scored
XAGrok 4 Fast ReasoningxAIGrok-4 Fast ReasoningN/AN/A2MClosed weightsAug 28, 2025Not scored
XAGrok 4.1 Fast Non ReasoningxAIGrok-4.1 Fast Non-ReasoningN/AN/A2MClosed weightsNov 17, 2025Not scored
XAGrok 4.1 Fast ReasoningxAIGrok-4.1 Fast ReasoningN/AN/A2MClosed weightsNov 17, 2025Not scored
XAGrok 4.20 Beta Non ReasoningxAIGrok-4.20 Beta Non-ReasoningN/AN/A2MClosed weightsMar 9, 2026Not scored
XAGrok 4.20 Multi Agent BetaxAIGrok-4.20 Multi-Agent BetaN/AN/A2MClosed weightsMar 9, 2026Not scored
XAGrok Build 0.1xAIGrok Build 0.1N/AN/A256KClosed weightsApr 16, 2026Not scored
XAGrok Imagine ImagexAIGrok Imagine ImageN/AN/AN/AClosed weightsN/ANot scored
XAGrok Imagine VideoxAIGrok Imagine VideoN/AN/AN/AClosed weightsN/ANot scored

xAI capability scores

Each unique model uses its latest scored version.

xAI LLMBoard scores

xAI Highlights

Leading xAI models by score, price and context window.

Top scoreGrok 4.582.2 LLMBoardLowest official inputGrok 4.3$1.3 / 1MLargest contextGrok 4 Fast2M tokens
Open-weight defaults0of 25 models

What is xAI?

Background and model catalog information for xAI.

Elon Musk AI company

Model ownership is separate from API hosting. One model can be offered by multiple API providers with different prices.

Vendor
xAI
Models
25
Versions
25
Country
US
Founded
Not available

Catalog data as of 2026-08-11.

FAQ

Common questions about xAI.

What is xAI's highest-ranked model?

Grok 4.5 currently has the strongest LLMBoard score from this vendor.

How many xAI models are tracked?

The catalog contains 25 independently selectable xAI models and 25 versions.

Does xAI host every listed model API?

Not necessarily. Vendor identifies the model developer; API providers are tracked separately.

Does xAI publish open-weight models?

No current default version is marked as open weight.