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Grok-3 vs Llama 3.1 405B Instruct
Comprehensive side-by-side LLM comparison
Grok-3 leads with 33.9% higher average benchmark score. Llama 3.1 405B Instruct offers 120.0K more tokens in context window than Grok-3. Llama 3.1 405B Instruct is $16.22 cheaper per million tokens. Grok-3 supports multimodal inputs. Llama 3.1 405B Instruct is available on 8 providers. Overall, Grok-3 is the stronger choice for coding tasks.
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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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Meta
Llama 3.1 405B was developed as Meta's largest open-source language model, designed to provide frontier-level capabilities with 405 billion parameters. Built to demonstrate that open-source models can match proprietary systems in capability, it enables researchers and developers to experiment with and deploy a powerful foundation model without licensing restrictions.
6 months newer
Llama 3.1 405B Instruct
Meta
2024-07-23
Grok-3
xAI
2025-02-17
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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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Llama 3.1 405B Instruct
Input:$0.89
Output:$0.89($16.22 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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Grok-3
Average Score:84.6%(+33.9%)
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Llama 3.1 405B Instruct
Average Score:50.7%
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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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Grok-3
1 providers
xAI
Throughput: 100 tok/s
Latency: 0.7ms
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Llama 3.1 405B Instruct
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Grok-3
Avg Score:84.6%(+33.9%)
Providers:1
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Llama 3.1 405B Instruct
Avg Score:50.7%
Providers:8