grok-4-3-betaGrok 4.3 Beta is xAI’s proprietary AI model, released Apr 17, 2026. Its strongest use case is math, where it ranks in the 62nd percentile of the models Model Beat tracks.
Scores on standardized evaluations. Higher is better — and rank shows where Grok 4.3 Beta lands among all models tracked on Model Beat.
Graduate-level scientific reasoning
Factual accuracy & hallucination
Novel ML problem-solving
Human-rated web development
Olympiad-qualifier math
Grok 4.3 Beta is a Grok-family AI model, from xAI, released Apr 17, 2026.
Grok 4.3 Beta is an AI model developed by xAI, part of the Grok family, released Apr 17, 2026.
On standardized evaluations tracked by Epoch AI, Grok 4.3 Beta scores 88.8% on GPQA Diamond, 93.3% on AIME 2024/2025, 49.9% on WeirdML.
Grok 4.3 Beta is a proprietary model (Hosted access (no API)), available through its provider's API rather than as a downloadable open-weight model.
Benchmark data from Epoch AI (CC BY) and Artificial Analysis; pricing, specs & descriptions from OpenRouter. Data updated Sep 4, 2026.