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Grok-1.5 vs o3
Comprehensive side-by-side LLM comparison
o3 leads with 36.9% higher average benchmark score. o3 supports multimodal inputs. Overall, o3 is the stronger choice for coding tasks.
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xAI
Grok 1.5 was developed by xAI as an advanced language model, designed to provide helpful and accurate information with a focus on reasoning and factual knowledge. Built to serve as a conversational AI with strong analytical capabilities, it represents xAI's early generation of foundation models.
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OpenAI
o3 represents the next generation in OpenAI's reasoning model series, developed to advance the capabilities of deliberate, step-by-step problem solving. Built to handle increasingly complex challenges across mathematics, science, and coding, it continues the evolution of reasoning-focused AI with improved analytical depth and accuracy.
1 year newer
Grok-1.5
xAI
2024-03-28
o3
OpenAI
2025-04-16
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Performance Metrics
Context window and performance specifications
Average performance across 3 common benchmarks
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Grok-1.5
Average Score:47.4%
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o3
Average Score:84.3%(+36.9%)
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Knowledge Cutoff
Training data recency comparison
o3
2024-05-31
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-1.5
0 providers
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o3
1 providers
OpenAI
Throughput:
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Grok-1.5
Avg Score:47.4%
Providers:0
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o3
Avg Score:84.3%(+36.9%)
Providers:1