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GPT-4.5 vs Grok-3
Comprehensive side-by-side LLM comparison
Grok-3 leads with 24.8% higher average benchmark score. Grok-3 offers 3.9K more tokens in context window than GPT-4.5. Grok-3 is $207.00 cheaper per million tokens. Overall, Grok-3 is the stronger choice for coding tasks.
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OpenAI
GPT-4.5 was developed as an intermediate advancement between GPT-4 and GPT-5, designed to incorporate incremental improvements in reasoning, factuality, and instruction-following. Built to bridge generational capabilities while maintaining compatibility with existing applications, it represents a refinement of the GPT-4 architecture with enhanced performance characteristics.
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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.
10 days newer
Grok-3
xAI
2025-02-17
GPT-4.5
OpenAI
2025-02-27
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Pricing Comparison
Cost per million tokens (USD)
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GPT-4.5
Input:$75.00
Output:$150.00
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Grok-3
Input:$3.00
Output:$15.00($207.00 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 3 common benchmarks
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GPT-4.5
Average Score:60.5%
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Grok-3
Average Score:85.3%(+24.8%)
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Knowledge Cutoff
Training data recency comparison
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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GPT-4.5
1 providers
OpenAI
Throughput: 50 tok/s
Latency: 20ms
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Grok-3
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GPT-4.5
Avg Score:60.5%
Providers:1
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Grok-3
Avg Score:85.3%(+24.8%)
Providers:1