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Grok-4 Heavy vs o1
Comprehensive side-by-side LLM comparison
Grok-4 Heavy leads with 10.4% higher average benchmark score. Grok-4 Heavy supports multimodal inputs. o1 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
o1 was developed as part of OpenAI's reasoning-focused model series, designed to spend more time thinking before responding. Built to excel at complex reasoning tasks in science, coding, and mathematics, it employs extended internal reasoning processes to solve harder problems than traditional language models through careful step-by-step analysis.
6 months newer
o1
OpenAI
2024-12-17
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%(+10.4%)
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o1
Average Score:78.0%
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Knowledge Cutoff
Training data recency comparison
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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o1
2 providers
Azure
Throughput:
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Grok-4 Heavy
Avg Score:88.4%(+10.4%)
Providers:0
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o1
Avg Score:78.0%
Providers:2