Skip to content

Grok 4.3

xAI · released 2026 · proprietary API

xAI's fastest + most intelligent GA model; native real-time X / web search.

Context window

1M

1,000,000 tokens

Input price

$1.25

per 1M tokens

Output price

$2.50

per 1M tokens

Blended

$1.56

3:1 in:out mix

Weights

Proprietary

API only

Released

2026

xAI

Long-context / tier pricing — Requests over ~200K tokens billed at a higher tier. Listed prices are the base rate for prompts up to ~200K tokens.

Where it ranks

Of 19 models tracked.

Cost to run

#7

of 19

Input price

#10

of 19

Context window

#5(tied)

of 19

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 (v2026-07-20), this row verified 20 Jul 2026 against xAI's official pricing ↗. Model pricing moves fast — confirm with xAI before you rely on a figure.