# xAI timeline: models

entity: /record/xai.md  
full timeline: /timelines/xai.md  

Model releases, deprecations, retirements, predecessors and default changes, oldest first. A model's row is on the model's own record.


## 2023

- 2023-11-03 | model_release | [Grok-1](/record/grok-1.md) | Grok-1 | valid | [clm_67DD3AA11B1F](/claim/clm_67DD3AA11B1F.md)

## 2024

- 2024-03-28 | model_release | [Grok-1.5](/record/grok-1-5.md) | Grok-1.5 | valid | [clm_0B3D8DCB1973](/claim/clm_0B3D8DCB1973.md)
- 2024-04-12 | model_release | [Grok-1.5 Vision](/record/grok-1-5-vision.md) | Grok-1.5V | valid | [clm_78BBF366886C](/claim/clm_78BBF366886C.md)
- 2024-08-13 | model_release | [Grok-2](/record/grok-2.md) | Grok-2 | valid | [clm_9B4BB9B7498D](/claim/clm_9B4BB9B7498D.md)
- 2024-08-13 | model_release | [Grok-2 mini](/record/grok-2-mini.md) | Grok-2 mini | valid | [clm_90DE94576F2C](/claim/clm_90DE94576F2C.md)
- 2024-12-14 | model_release | [Grok-2](/record/grok-2.md) | grok-2-vision-1212 | valid | [clm_040CFE56FC93](/claim/clm_040CFE56FC93.md)
- 2024-12-14 | model_release | [Grok-2](/record/grok-2.md) | grok-2-1212 | valid | [clm_0C954964C7F4](/claim/clm_0C954964C7F4.md)

## 2025

- 2025-02-19 | model_release | [Grok 3](/record/grok-3.md) | Grok 3 | valid | [clm_BA5D94890F40](/claim/clm_BA5D94890F40.md)
- 2025-02-19 | model_release | [Grok 3 mini](/record/grok-3-mini.md) | Grok 3 mini | valid | [clm_9928E56E832B](/claim/clm_9928E56E832B.md)
- 2025-07-09 | model_release | [Grok 4](/record/grok-4.md) | Grok 4 | valid | [clm_D83F8B7D523E](/claim/clm_D83F8B7D523E.md)
- 2025-08-28 | model_release | [Grok Code Fast 1](/record/grok-code-fast-1.md) | grok-code-fast-1 | valid | [clm_7DE632E42420](/claim/clm_7DE632E42420.md)
- 2025-09-19 | model_release | [Grok 4 Fast](/record/grok-4-fast.md) | Grok 4 Fast | valid | [clm_DFB0958C2D0F](/claim/clm_DFB0958C2D0F.md)
- 2025-11-17 | model_release | [Grok 4.1](/record/grok-4-1.md) | Grok 4.1 | valid | [clm_DE01F367AAC8](/claim/clm_DE01F367AAC8.md)
- 2025-11-19 | model_release | [Grok 4.1 Fast](/record/grok-4-1-fast.md) | Grok 4.1 Fast | valid | [clm_13B91C07A63A](/claim/clm_13B91C07A63A.md)

## 2026

- 2026-03-10 | model_release | [Grok 4.20](/record/grok-4-20.md) | Grok 4.20 | valid | [clm_679881027EF3](/claim/clm_679881027EF3.md)
- 2026-04-30 | model_release | [Grok 4.3](/record/grok-4-3.md) | Grok 4.3 | valid | [clm_EE9D401F2912](/claim/clm_EE9D401F2912.md)
- 2026-05-15 | retired | [Grok 3](/record/grok-3.md) | grok-3 | valid | [clm_E3531F8B26BF](/claim/clm_E3531F8B26BF.md)
- 2026-05-15 | retired | [Grok 4](/record/grok-4.md) | grok-4-0709 | valid | [clm_A31976FAF75D](/claim/clm_A31976FAF75D.md)
- 2026-05-15 | retired | [Grok 4.1 Fast](/record/grok-4-1-fast.md) | grok-4-1-fast-reasoning | valid | [clm_53450A803B87](/claim/clm_53450A803B87.md)
- 2026-05-15 | retired | [Grok 4 Fast](/record/grok-4-fast.md) | grok-4-fast-reasoning | valid | [clm_88F24D97EEE0](/claim/clm_88F24D97EEE0.md)
- 2026-05-15 | retired | [Grok Code Fast 1](/record/grok-code-fast-1.md) | grok-code-fast-1 | valid | [clm_1D029497E8A0](/claim/clm_1D029497E8A0.md)
- 2026-05-29 | model_release | [Grok Build 0.1](/record/grok-build-0-1.md) | Grok Build 0.1 | valid | [clm_3A4E9A099C1C](/claim/clm_3A4E9A099C1C.md)
- 2026-06-16 | model_release | Grok Imagine Video 1.5 | Grok Imagine Video 1.5 | valid | [clm_C6E504355EF8](/claim/clm_C6E504355EF8.md)
- 2026-07-16 | model_release | [Grok 4.5](/record/grok-4-5.md) | Grok 4.5 | valid | [clm_19146ECE27ED](/claim/clm_19146ECE27ED.md)
- 2026-08-12 | model_release | [Grok 4.6](/record/grok-4-6.md) | Grok 4.6 | valid | [clm_C46767A115C8](/claim/clm_C46767A115C8.md)
- 2026-09-18 | model_release | Grok Voice Transcribe 2.0 | Grok Voice Transcribe 2.0 | valid | [clm_4862E7926BBB](/claim/clm_4862E7926BBB.md)
- 2026-09-21 | model_release | [Grok 4.7](/record/grok-4-7.md) | Grok 4.7 | valid | [clm_3AA39004FFFD](/claim/clm_3AA39004FFFD.md)
- 2026-10-14 | model_release | Grok Voice 3.0 | Grok Voice 3.0 | valid | [clm_50D21A16B87E](/claim/clm_50D21A16B87E.md)