Grok 4.6
Grok 4.6 is an xAI model made available on the xAI API on August 12, 2026.
- Lab
- xAI
- Release date
- Status
- Generally available
- Context window
- 500,000 tokens
xAI’s API release notes say Grok 4.6, which it describes as SpaceXAI’s frontier model for coding, agentic tasks and knowledge work, became available on the xAI API on August 12, 2026. It has a 500K-token context window, takes text and image input and returns text only, with no text output limit. Its successor, Grok 4.7, followed on September 21, 2026.
- Modalities
- Text and image input; text output
- Availability
- xAI API.
- Official source
- docs.x.ai
- Last checked
Questions
When was Grok 4.6 released?
xAI’s release notes date its availability on the xAI API to August 12, 2026.
What is the context window of Grok 4.6?
xAI lists a 500K-token context window, with text and image input and text-only output.
What replaced Grok 4.6?
xAI released Grok 4.7 on September 21, 2026.
Source
Release dates, model IDs and limits come from each lab’s own announcement, changelog, documentation or deprecations page, linked on every model with the date it was last checked. How we pick and check sources: editorial standards.