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Grok-3 vs o3
Comprehensive side-by-side LLM comparison
Grok-3 leads with 1.2% higher average benchmark score. o3 offers 164.0K more tokens in context window than Grok-3. o3 is $8.00 cheaper per million tokens. Both models have their strengths depending on your specific coding needs.
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xAI
Grok 3 was introduced as xAI's third-generation flagship model, designed to push the boundaries of reasoning, factual accuracy, and helpful assistance. Built to advance the state of AI capabilities, it incorporates improvements across language understanding, generation, and analytical thinking.
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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 month newer
Grok-3
xAI
2025-02-17
o3
OpenAI
2025-04-16
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Pricing Comparison
Cost per million tokens (USD)
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Grok-3
Input:$3.00
Output:$15.00
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o3
Input:$2.00
Output:$8.00($8.00 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 4 common benchmarks
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Grok-3
Average Score:87.3%(+1.2%)
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o3
Average Score:86.1%
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Knowledge Cutoff
Training data recency comparison
o3
2024-05-31
Grok-3
2024-11-17
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-3
1 providers
xAI
Throughput: 100 tok/s
Latency: 0.7ms
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o3
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Grok-3
Avg Score:87.3%(+1.2%)
Providers:1
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o3
Avg Score:86.1%
Providers:1