Grok 4.6

Grok 4.6 is xAI's frontier model for long-running agents, coding, knowledge work, and visual projects. It is the latest in the grok line, succeeding Grok 4.5, which was released on 2026-07-08. It has a 500,000 token context window and a 500,000 token output limit. Pricing starts at $2.00 per million input tokens and $6.00 per million output tokens, with cached input at $0.50 per million tokens. Weights are not open. It supports reasoning mode, tool calling, and accepts image, pdf, and text, returning text.

Against Grok 4.5: cached input $0.30 to $0.50.

• ·500k token context and output window
• ·Supports reasoning and tool calling
• ·Accepts image, pdf, and text inputs
• ·Priced from $2 per million input tokens
• ·Cached input at $0.50 per million tokens

• Reach for it for long-running agent tasks
• Reach for it for coding and knowledge work
• Reach for it for visual projects with image input

24 hosts serve this model at the price above · the maker's documentation

• 8GPT-6 Astra has gained the ability to drive a car2026-09-24

1 signal of the archive mention this model, each scored against the published bar. This list is rebuilt from the archive at every build, so it cannot go stale.

The registry keeps the six most recent versions of a line. Older ones stay in the file and can be surfaced without a rebuild.

What is the context window?

500,000 tokens, same as Grok 4.5.

Is it open weights?

No, weights are not open.

What inputs does it accept?

Image, pdf, and text; returns text.