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GPT-5 vs Grok-3
Comprehensive side-by-side LLM comparison
GPT-5 leads with 2.9% higher average benchmark score. GPT-5 offers 392.0K more tokens in context window than Grok-3. GPT-5 is $6.75 cheaper per million tokens. Both models have their strengths depending on your specific coding needs.
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OpenAI
GPT-5 represents the next generation of OpenAI's foundational models, developed to advance the frontier of AI capabilities in reasoning, knowledge, and general intelligence. Built to push beyond the limitations of GPT-4, it incorporates architectural and training improvements designed to enhance performance across diverse tasks and domains.
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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.
5 months newer
Grok-3
xAI
2025-02-17
GPT-5
OpenAI
2025-08-07
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Pricing Comparison
Cost per million tokens (USD)
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GPT-5
Input:$1.25
Output:$10.00($6.75 cheaper)
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Grok-3
Input:$3.00
Output:$15.00
Performance Metrics
Context window and performance specifications
Average performance across 3 common benchmarks
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GPT-5
Average Score:88.2%(+2.9%)
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Grok-3
Average Score:85.3%
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Knowledge Cutoff
Training data recency comparison
GPT-5
2024-09-30
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-5
2 providers
OpenAI
Throughput: 100 tok/s
Latency: 2ms
ZeroEval
Throughput: 100 tok/s
Latency: 2ms
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GPT-5
Avg Score:88.2%(+2.9%)
Providers:2
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Grok-3
Avg Score:85.3%
Providers:1