This model is 18 months old. A newer version of it has since shipped: Grok 4.3 (2026-07-16). The details below are still accurate for this model — it just is not what we would recommend today.
Grok 3 mini
xAI🇺🇸 United States
Fast reasoning model from xAI. Configurable thinking effort. Strong on STEM.
Context window131K tokens
Input / 1M tokens$0.3
Output / 1M tokens$0.5
Version History
grok-3-mini-betamajor
Grok 3 mini brings fast chain-of-thought reasoning at low cost. Configurable thinking effort. Outperforms o3-mini on AIME 2025.
Benchmark Scores
Full leaderboard →89.6%
MATH
138.0 tokens_per_sec
Speed (tok/s)