Comprehensive side-by-side LLM comparison
o4 mini leads with 1.6% higher average benchmark score. o4 mini offers 152.5K more tokens in context window than Grok 3 mini. Grok 3 mini is $4.70 cheaper per million tokens. o4 mini supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
xAI
Grok 3 mini, released by xAI alongside Grok 3 in February 2025, is a compact reasoning model from the Grok 3 family featuring RL-enhanced Think mode for extended chain-of-thought processing. It features a 131K token context window and targets STEM tasks, mathematics, and coding applications where cost-efficient reasoning with configurable depth is required.
OpenAI
OpenAI o4 mini, released by OpenAI in April 2025, is a compact reasoning model from the o4 family that combines multimodal understanding with efficient chain-of-thought processing. It features a 200K token context window and native image understanding, with strong performance on mathematics and coding benchmarks relative to its inference cost. o4 mini targets cost-sensitive applications requiring both visual reasoning and mathematical accuracy.
1 month newer

Grok 3 mini
xAI
2025-02-17

o4 mini
OpenAI
2025-04-16
Cost per million tokens (USD)
Grok 3 mini
o4 mini
Context window and performance specifications
Average performance across 1 common benchmarks
Grok 3 mini
o4 mini
Performance comparison across key benchmark categories
Grok 3 mini
o4 mini
Available providers and their performance metrics
Grok 3 mini
xAI
o4 mini
Grok 3 mini
o4 mini
Grok 3 mini
o4 mini
OpenAI