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Grok-4 Heavy vs o3-mini
Comprehensive side-by-side LLM comparison
Grok-4 Heavy leads with 11.2% higher average benchmark score. Grok-4 Heavy supports multimodal inputs. o3-mini is available on 2 providers. Overall, Grok-4 Heavy is the stronger choice for coding tasks.
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xAI
Grok 4 Heavy was created as a larger, more capable variant of Grok 4, designed to provide maximum reasoning depth and analytical capability. Built for the most demanding applications requiring sophisticated problem-solving, it represents xAI's flagship offering in the fourth generation.
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OpenAI
o3-mini was created as an efficient variant of the o3 reasoning model, designed to provide advanced thinking capabilities with reduced computational requirements. Built to make next-generation reasoning accessible to a broader range of applications, it balances analytical depth with practical speed and cost considerations.
5 months newer
o3-mini
OpenAI
2025-01-30
Grok-4 Heavy
xAI
2025-07-09
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Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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Grok-4 Heavy
Average Score:88.4%(+11.2%)
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o3-mini
Average Score:77.2%
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Knowledge Cutoff
Training data recency comparison
o3-mini
2023-09-30
Grok-4 Heavy
2024-12-31
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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Grok-4 Heavy
0 providers
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o3-mini
2 providers
Azure
Throughput:
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Grok-4 Heavy
Avg Score:88.4%(+11.2%)
Providers:0
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o3-mini
Avg Score:77.2%
Providers:2