Grok 4.3
xAI's efficiency model. Long-context specialist with 1M window.
Scores by test
Methodology →What you need to know
Grok 4.3 distinguishes itself through high-level reasoning and structural precision. It achieves perfect scores in structured output, strategic analysis, and creative problem solving, making it a strong candidate for complex architectural planning or generating strictly formatted data. Its 1M token context window is fully leveraged, scoring 5/5 in long context performance, which allows for the processing of massive datasets without significant degradation in retrieval or coherence.
At a blended cost of $2.19/MTok, this model sits in a mid-to-high price tier. While the pricing is substantial, the value is concentrated in its agentic capabilities and persona consistency. However, the model struggles with basic classification tasks and exhibits a significant weakness in safety calibration, scoring only 2/5. This indicates a tendency to bypass safety guardrails or fail to adhere to strict content filtering.
Use this model if your workflow requires high-reasoning strategic analysis, large-scale document processing, or reliable JSON/structured outputs. Skip this model if your application requires strict safety alignment, high-accuracy classification, or if you are operating on a tight budget where lower-cost models suffice for simpler tasks.
Strengths — Top 3
Relative weaknesses — Bottom 3
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