Grok 4.3

by xAI

xAI's Grok 4.3 model with always-on reasoning, 1M context window, vision, and agentic tool use

ReasoningVisionToolsStructured output

Context window

Max output

—

Input price

$1.25 /1M

Output price

$2.50 /1M

Benchmarks

Independent benchmark scores — composite indices for reasoning, coding, and math, plus individual eval scores where available.

Global rank#10 of 505 LLMs

TierFrontier

Output speed80 tok/s

First token16.09s

Intelligence Index53.2

Coding Index41.0

GPQA Diamond

90%

Humanity's Last Exam

35%

SciCode

47%

IFBench

81%

Long-context reasoning

64%

Terminal-Bench Hard

38%

τ²-Bench Telecom

98%

See full leaderboard →Benchmarks via Artificial Analysis · View on AA

Available routes

The same Grok 4.3 runs on 2 different routes through the Opper gateway. Each route has its own data-handling posture.

Provider	Region	Zero data retention	Training	Logging	Contract	Input	Output
xAI	US	Opt-in	No (opt-in)	Up to 30 days for abuse monitoring	Enterprise	$1.25	$2.50
xAI	EU	Opt-in	No (opt-in)	Up to 30 days for abuse monitoring	Enterprise	$1.25	$2.50

Human review: Abuse-flagged only

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