Models

Your choice depends on your use case. We have dedicated models and APIs for code, audio, image, and video capabilities. For code, use Grok Build — it is our coding model. For everything else, use Grok 4.3. It is the most intelligent and fastest model we’ve built.

• No access to realtime events without search tools enabled
  • Grok has no knowledge of current events or data beyond what was present in its training data.
  • To incorporate realtime data with your request, enable server-side search tools (Web Search / X Search). See Web Search and X Search.
• Chat models
  • No role order limitation: You can mix system, user, or assistant roles in any sequence for your conversation context.
  • logprobs and top_logprobs are not supported by models grok-4.20 and newer. These fields will be silently ignored if set.
• Image input models
  • Maximum image size: 20MiB
  • Maximum number of images: No limit
  • Supported image file types: jpg/jpeg or png.
  • Any image/text input order is accepted (e.g. text prompt can precede image prompt)

Some models have aliases to help users automatically migrate to the next version of the same model. In general:

• <modelname> is aliased to the latest stable version.
• <modelname>-latest is aliased to the latest version. This is suitable for users who want to access the latest features.
• <modelname>-<date> refers directly to a specific model release. This will not be updated and is for workflows that demand consistency.

For most users, the aliased <modelname> or <modelname>-latest are recommended, as you would receive the latest features automatically.