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Grok 4.6

xAI · released 12 Aug 2026 · proprietary API

xAI's frontier model for coding, agentic tasks and knowledge work; reasoning effort up to xhigh.

Context window

500K

500,000 tokens

Input price

$2

per 1M tokens

Output price

$6

per 1M tokens

Blended

$3

3:1 in:out mix

Weights

Proprietary

API only

Released

12 Aug 2026

xAI

Long-context / tier pricing — Doubles above 200K prompt tokens, to $4 in / $12 out; cached input $0.50/1M ($1.00 long). No batch discount, unlike Grok 4.3. Listed prices are the base rate for prompts up to ~200K tokens.

Where it ranks

Of 25 models tracked.

Cost to run

#10(tied)

of 25

Input price

#12(tied)

of 25

Context window

#19

of 25

See the full Frontier Index →

Compare with

The nearest models by blended cost to run.

Put it to work

Specs from BitByteCore's hand-verified Frontier Ledger (v2026-09-03), this row verified 3 Sep 2026 against xAI's official pricing ↗. Model pricing moves fast, so confirm with xAI before you rely on a figure.