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Grok-4 vs o3
Comprehensive side-by-side LLM comparison
Grok-4 leads with 9.7% higher average benchmark score. o3 offers 36.0K more tokens in context window than Grok-4. o3 is $8.00 cheaper per million tokens. Overall, Grok-4 is the stronger choice for coding tasks.
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xAI
Grok 4 represents the fourth generation of xAI's language models, developed to continue advancing the frontier of AI reasoning and knowledge. Built to handle increasingly complex tasks with enhanced reliability, it demonstrates xAI's commitment to pushing AI capabilities forward.
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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.
2 months newer
o3
OpenAI
2025-04-16
Grok-4
xAI
2025-07-09
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Pricing Comparison
Cost per million tokens (USD)
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Grok-4
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-4
Average Score:58.8%(+9.7%)
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o3
Average Score:49.1%
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Knowledge Cutoff
Training data recency comparison
o3
2024-05-31
Grok-4
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
2 providers
xAI
Throughput: 100 tok/s
Latency: 0.7ms
ZeroEval
Throughput: 100 tok/s
Latency: 0.7ms
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Grok-4
Avg Score:58.8%(+9.7%)
Providers:2
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o3
Avg Score:49.1%
Providers:1