PrivateAI Native
Grok
🇺🇸 Palo AltoFounded 2023ARR $500M+Valuation$250B(February 2026 as of)~2,000
About
An AI company founded in 2023 by Elon Musk, who also leads Tesla and SpaceX. Following its merger with the social platform X (formerly Twitter) in 2025, xAI pursues a distinctive strategy of combining AI with social media.
Grok is directly connected to the X platform, reflecting the latest news and social reactions in real time. While most AI models are trained on data that is months out of date, Grok minimizes this lag. It also distinguishes itself with a freer, more direct personality compared to other AI assistants, and is available primarily to X Premium subscribers.
Research Areas
LLMReasoningReal-time AIMultimodal
Partners & Investors
FidelityMorgan Stanleya16z
AI Models
Grok 4.1 Fast
Released2025-11-19
Cutoff2024-11
Cost/1M$0.20IN/$0.50OUT
Context2.0MIN/30KOUT
Speed134 tok/sTTFT 365ms
Grok 4.1 Fast (Reasoning)
Released2025-09-15
Cutoff2025-06-01
Cost/1M$0.20IN/$0.50OUT
Context2.0MIN/33KOUT
Speed114 tok/sTTFT 303ms
Grok 4.20
Released2026-03-09
CutoffPrivate
Cost/1M$2.00IN/$6.00OUT
Context2.0MIN/2.0MOUT
Speed107 tok/sTTFT 426ms
Grok 4.20 (Reasoning)
Released2026-03-31
CutoffPrivate
Cost/1M$2.00IN/$6.00OUT
Context2.0MIN/2.0MOUT
Speed113 tok/sTTFT 425ms
Grok Imagine
Released2026-02-03
CutoffPrivate
Cost/img$0.02
ContextN/A
Speed—
Grok Imagine Pro
Released2026-02-01
CutoffPrivate
Cost/img$0.07
ContextN/A
Speed—
Grok Imagine Video
Released2026-02-03
CutoffPrivate
Cost/1M$0.05~0.07/sec
Context—
Speed—