Private AI
Grok 4.3 is xAI's reasoning model for text and image inputs, built for agentic workflows, instruction following, factual accuracy, long-document analysis, and deep research. Reasoning is always active and requests above 200k total tokens are charged at the higher long-context rate. Content policy rejections can still be charged: xAI may pass through a $0.05 moderation-failure fee, or a $0.055 usage-guidelines violation fee, depending on which rejection upstream returns.
Added Apr 30, 2026
Context Window
1.0M
Max Output
1.0M
Avg output tokens (7d)
737 tokens
Input Price (Auto)
$1.25/1M
Output Price (Auto)
$2.50/1M
Capabilities
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
24.8
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Coding Index
25.1
GPQA Diamond
Graduate-level scientific reasoning
65.8%
Better than 48% of models compared
HLE
Humanity's Last Exam
6.5%
Better than 50% of models compared
IFBench
Instruction-following benchmark
47.6%
Better than 58% of models compared
T²-Bench Telecom
Conversational AI agents in dual-control scenarios
65.8%
Better than 60% of models compared
AA-LCR
Long context reasoning evaluation
24.7%
Better than 37% of models compared
SciCode
Python programming for scientific computing
37.4%
Better than 65% of models compared
Terminal-Bench Hard
Agentic coding and terminal use
18.9%
Last updated Jun 17, 2026
Artificial AnalysisBetter than 58% of models compared