Grok 4.6

Available

xAIFrontierProprietary

xAI's frontier update to Grok 4.5, released 2026-08-12. Built on the same reported 1.5-trillion-parameter V9 foundation as Grok 4.5, with gains coming from upgraded supervised fine-tuning and reinforcement learning rather than a new base. Supports a 500K-token context and configurable reasoning effort (low, medium, high default, xhigh). List pricing is $2 / $6 per 1M input/output tokens below 200K prompt tokens ($0.50 cached input), rising to $4 / $12 above 200K.

Official page ↗

Specifications

License: Proprietary
Weights: Not released
Architecture: unknown
Parameters: Undisclosed
Context window: 500K tokens
Max output: —
Knowledge cutoff: —
Price (in / out, $/M): $2 / $6
Modalities: TextVision

Benchmarks

No benchmark scores recorded yet. Spotted some? Submit a correction.

Vendor-reported figures are claims until independently verified. See methodology.