Anthropic Claude Sonnet 5 VS xAI Grok 4.5
⚖️Our Take
Both models perform almost identically, with an average score gap of just 1.7%. We recommend choosing Grok 4.5 as it is the more cost-effective option (being 1.3x cheaper) without sacrificing any real-world capability.
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Benchmarks & Scores
Coding (swe-bench-pro)
63.2%excellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)
91.1%graduate-level science QA
Cost & Performance
Cost (per 1M tokens)
$4.00Input: $2.00 | Output: $10.00Context WindowLarger
1.05M tokensBenchmarks & Scores
Coding (swe-bench-pro)Winner (+1.5%)
64.7%excellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)Winner (+1.9%)
93%graduate-level science QA
Cost & Performance
Cost (per 1M tokens)1.3x cheaper
$3.00Input: $2.00 | Output: $6.00Context Window
500k tokensFrequently Asked Questions about Claude Sonnet 5 vs Grok 4.5 comparison
Grok 4.5 is cheaper than Claude Sonnet 5. Grok 4.5 has a blended cost of $3.00/1M tokens, which is about 1.3x cheaper than Claude Sonnet 5 at $4.00/1M tokens.
Grok 4.5 is better for coding tasks on this benchmark. It scores 64.7% on swe-bench-pro (excellent at multi-file repositories, autonomous agents, and industrial codebases) compared to Claude Sonnet 5 which scores 63.2%.
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