Grok 4.1
SpaceXAI
xAI's Grok 4.1 in its Thinking configuration, which uses reasoning tokens before answering; a Non-thinking configuration answers immediately. xAI released Grok 4.1 on 17 November 2025 to all users on grok.com, X and the iOS and Android apps.
Pricing & specs verifiedSource: vendor documentation · checked Sep 3, 2026LMArena: 1459 (rank 57) · leaderboard · retrieved Sep 27, 2026
Pricing
Not published
Context
Not published
LMArena Elo
1459
Overall rank
#57
Full Specifications
Not published | |
|---|---|
| Identity | |
| Developer | SpaceXAI |
| Released | Nov 2025 |
| Status | Available in xAI's apps |
| Licence | Proprietary |
| Self-hostable | No |
| Capability | |
| Extended reasoning | Yes — Thinking configuration |
| Access | |
| Chat app | Yes — grok.com, X, iOS and Android apps |
| Measured quality | |
| LMArena Elo | 1459 (checked Sep 2026) |
| LMArena rank | Rank 57 |