Grok 4.6

Spec

Attribute	Value
Developer	xAI
Released	not yet
Announced	2026-07-18
Context window	unknown
Pricing	unknown
License	proprietary
Availability	unknown

Release Date

• Announced: July 18, 2026 (Elon Musk on X)
• Pre-training: expected to complete week of July 20, 2026 (Musk on X); as of July 23 xAI has not publicly confirmed completion, but the timeline implies pre-training is done or nearly done
• Current phase (as of 2026-07-23): likely in post-training — RL fine-tuning, RLHF, safety evaluations; no public update from xAI
• Launch: unscheduled; community estimates late August to mid-September 2026

Use Cases

Unknown (no benchmarks or capability details released as of announcement).

Compared To

Model	Developer	Params	Status
Grok 4.5	xAI	1.5T	Released 2026-07-08
Grok 4.6	xAI	2T	Post-training (est. as of Jul 23)
Kimi K3	Moonshot	2.8T MoE	Released 2026-07-16
MiniMax M3 Pro	MiniMax	2.7T (unconfirmed)	Q3 2026 (unconfirmed)

Sources

• Elon Musk on X (July 18, 2026) → (source)
• Dataconomy: https://dataconomy.com/2026/07/20/musk-xai-grok-4-6-2t-model-training-next-week/
• WION News: https://www.wionews.com/world/musk-s-answer-to-china-s-ai-monster-2-trillion-parameter-grok-4-6
• Kie.ai: https://kie.ai/blog/what-is-grok-4-6

Key Facts (as of announcement)

• Parameter count: 2 trillion (vs. Grok 4.5's 1.5T — 33% larger)
• Performance claim: "better than [Grok 4.5] in every way" (Musk, unverified)
• Speed target: "keeping speed and token efficiency close" to Grok 4.5
• Motivation: Musk framed it as a direct response to Moonshot AI's Kimi K3 (2.8T MoE, announced July 16, 2026)
• Monthly cadence: consistent with xAI's June 28 announcement of monthly releases for the remainder of 2026

⚠️ No benchmarks, pricing, context window, or official launch date have been published. Treat performance claims as pre-release promotional statements until verified against third-party evals.