xAI
Elon Musk's lab behind Grok, trained on the Colossus cluster in Memphis; distributes through X and an API.
- Provider rank
- #7
- by best model
- Best index
- 63.8
- Grok 4.6 (medium)
- Ranked models
- 14
- 0 open weights
- Cheapest ranked
- $1.25/M
- Grok Build 0.1
Release timeline
Each model’s best configuration by release date. The top eight are labelled; hover any point for its name.
Next release
Over the last two years xAI shipped 13 distinct models, one every 42 days on median. The latest arrived on 12 Aug 2026.
If the cadence holds, the next one lands between 6 Sept 2026 and 9 Oct 2026.
An estimate from past release dates only. It knows nothing about roadmaps or announcements.
Fastest ranked model: Grok 4.3 at 113 tok/s.
Head to head
xAI vs OpenAI
xAI vs Anthropic
xAI vs Moonshot AI
xAI vs Meta
xAI vs Google
xAI vs Alibaba
xAI vs Zhipu AI
xAI vs DeepSeek
xAI vs NVIDIA
xAI vs MiniMaxModels
Every xAI model with a result, one row per model; switch to all configurations to see each reasoning effort.
18 of 18
| # | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1 | Grok 4.6mediumxAI | 63.8±7 | $3.00 | 55 | 37 s | 500k | 2026-08-12 | 2026-08-12 |
| 2 | Grok 4.5xAI | 63.4±4 | $3.00 | 56 | 13 s | 500k | 2026-07-08 | 2026-09-08 |
| 3 | Grok 4.3mediumxAI | 60.7±6 | $1.56 | 113 | 12 s | 1M | 2026-04-17 | – |
| 4 | Grok 4.20xAI | 57.9±8 | $1.56 | 104 | 19 s | 1M | 2026-02-17 | 2026-04-16 |
| 5 | Grok 4xAI | 57.2±3 | $1.56 | – | – | 256k | 2025-07-09 | 2026-09-02 |
| 6 | Grok Build 0.1xAI | 56.1±10 | $1.25 | 62 | 33 s | 256k | 2026-05-29 | 2026-06-25 |
| 7 | Grok 4.1thinkingxAI | 55.9±4 | $1.56 | – | – | 2M | 2025-06-27 | 2026-09-08 |
| 8 | Grok 3 Mini FasthighxAI | 53.5±2 | – | – | – | – | – | 2026-09-01 |
| 9 | Grok 3 minihighxAI | 53.3±4 | $1.56 | – | – | 131k | 2025-04-09 | 2026-09-02 |
| 10 | Grok 4 FastthinkingxAI | 53.0±4 | $1.56 | – | – | 2M | 2025-09-19 | 2026-09-08 |
| 11 | Grok 3 Mini FastlowxAI | 50.3±2 | – | – | – | – | – | 2026-09-01 |
| 12 | Grok 3xAI | 50.0±4 | $1.56 | – | – | 131k | 2025-02-17 | 2026-09-02 |
| 13 | Grok Code Fast 1xAI | 45.9±5 | $1.25 | – | – | 256k | 2025-08-28 | 2026-09-08 |
| 14 | Grok 2xAI | 41.6±5 | – | – | – | 131k | 2024-12-12 | 2026-09-02 |
| 15 | Grok 4.20 Multi AgentxAI | – | $1.56 | 329 | 6.71 s | 1M | 2026-03-09 | 2026-09-02 |
| 16 | Grok 2 MinixAI | – | – | – | – | – | – | 2026-09-02 |
| 17 | Grok 4.20 Beta1xAI | – | – | – | – | – | – | 2026-09-02 |
| 18 | Grok 4 Fast RxAI | – | – | – | – | – | – | – |
Latest news
- Introducing Grok Botx.ai · 11 Aug 2026
- Musk’s xAI loses court bid to block Minnesota's AI ‘nudification’ banReuters · 4 Sept 2026
- Introducing Grok 4.6x.ai · 12 Aug 2026
- Imagine Image 2.0x.ai · 7 Aug 2026
- Anthropic, xAI Execs Disconnect From AI Ethical Concerns To Face Reality 02/11/2026MediaPost · 9 Sept 2026
- xAI denied injunction against Minnesota AI-nudification lawMinnesota Lawyer · 9 Sept 2026
- Setting Grok Bot loose on procurementx.ai · 4 Sept 2026
- Judge lets Minnesota enforce anti-nudification app law over xAI objection as case proceedsMPR News · 4 Sept 2026