Grok model evolution
Grok 1
Nov 2023
xAI's first model, initial release
Grok 1.5
Mar 2024
Improved capabilities, still not frontier competitive
Grok 2
Aug 2024
Significant upgrade, laying groundwork for Grok 3
Grok 3
Feb 2025
Breakthrough model with DeepSearch and Think mode. Competitive benchmarks.
Grok 4
Jul 2025
Integrated reasoning, multi agent Heavy variant
Grok 4.1
Nov 2025
Refined personality and usability. Preferred 64%+ of the time over Grok 4.
Grok 4.20 Beta
Mar 2026
Multi agent capabilities, expanded Batch API (image and video), Provisioned Throughput.
Grok 4.3
Apr 2026
Current flagship. 1M context, configurable reasoning, industry leading tool calling. Older models retired May 15.
Grok Build 0.1
May 2026
Fast coding model for agentic coding workflows. 256K context.
Grok 1
Nov 2023
xAI's first model, initial release
Grok 1.5
Mar 2024
Improved capabilities, still not frontier competitive
Grok 2
Aug 2024
Significant upgrade, laying groundwork for Grok 3
Grok 3
Feb 2025
Breakthrough model with DeepSearch and Think mode. Competitive benchmarks.
Grok 4
Jul 2025
Integrated reasoning, multi agent Heavy variant
Grok 4.1
Nov 2025
Refined personality and usability. Preferred 64%+ of the time over Grok 4.
Grok 4.20 Beta
Mar 2026
Multi agent capabilities, expanded Batch API (image and video), Provisioned Throughput.
Grok 4.3
Apr 2026
Current flagship. 1M context, configurable reasoning, industry leading tool calling. Older models retired May 15.
Grok Build 0.1
May 2026
Fast coding model for agentic coding workflows. 256K context.
0%
User preference for Grok 4.1 over Grok 4
0M
Token context (Grok 4.3)
0K
Token context (Grok Build 0.1)