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Claude Sonnet 4.5 vs Grok-3 Mini
Comprehensive side-by-side LLM comparison
Grok-3 Mini leads with 2.2% higher average benchmark score. Claude Sonnet 4.5 offers 128.0K more tokens in context window than Grok-3 Mini. Grok-3 Mini is $17.20 cheaper per million tokens. Both models have their strengths depending on your specific coding needs.
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Anthropic
Claude Sonnet 4.5 was developed to bridge human thinking and machine assistance, allowing people to work with language and tools in a more conversational and natural way. Built with a focus on turning ideas into results, it represents an evolution in making AI feel less mechanical while maintaining strong capabilities across reasoning, coding, and collaborative tasks.
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xAI
Grok 3 Mini was developed as an efficient version of Grok 3, designed to bring next-generation capabilities to resource-conscious deployments. Built to provide strong performance with practical efficiency, it extends Grok 3's innovations to broader application scenarios.
7 months newer
Grok-3 Mini
xAI
2025-02-17
Claude Sonnet 4.5
Anthropic
2025-09-29
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Pricing Comparison
Cost per million tokens (USD)
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Claude Sonnet 4.5
Input:$3.00
Output:$15.00
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Grok-3 Mini
Input:$0.30
Output:$0.50($17.20 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
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Claude Sonnet 4.5
Average Score:85.2%
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Grok-3 Mini
Average Score:87.4%(+2.2%)
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Knowledge Cutoff
Training data recency comparison
Grok-3 Mini
2024-11-17
Claude Sonnet 4.5
2025-01-31
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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Claude Sonnet 4.5
2 providers
Anthropic
Throughput: 42 tok/s
Latency: 0.4ms
ZeroEval
Throughput: 42 tok/s
Latency: 0.4ms
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Claude Sonnet 4.5
Avg Score:85.2%
Providers:2
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Grok-3 Mini
Avg Score:87.4%(+2.2%)
Providers:1