Grok 4.3

xAI · 2026 · Reasoning LLM · USA

Overview

Launched in beta April 17, 2026; listed as the recommended chat model in official xAI docs as of June 2026. Note: logprobs unsupported on grok-4.20 and newer.

Details

Vendor: xAI
Type: Reasoning LLM
Release year: 2026
Jurisdiction: USA
CEO: Elon Musk
Key staffers: Igor Babuschkin (Co-Founder), Tony Wu (Co-Founder), Greg Yang, Toby Pohlen
Deployment: Cloud only (proprietary)
Open source: No
Free tier: Yes
Subscription: X Premium+ / SuperGrok plans; xAI API
Stock status: Private (acquired by SpaceX, 2026)
X: @xai

Capabilities

AppVoice Chat

AIDb Rating

8/5

AIDb v2.0 (curated): Capability 9/10 · Currency 10/10 · Access 5.5/10 · Significance 5/10 → 8.07

Safety notes

Use official system card/docs for model-specific risk details.

Last verified 2026-06-11 · Primary source ↗

Cite this

“Grok 4.3.” AIDb — The AI Database. Verified 2026-06-11. https://theaidatabase.com/m/xai-grok-4-3.html