Anthropic Claude Sonnet 5 VS xAI Grok 4.3
Decision Recommendation
⚖️ Editorial Verdict: In our analysis, Grok 4.3 is the premium intelligence choice, scoring 63.2% higher on coding benchmarks. It also maintains strong cost efficiency. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, Claude Sonnet 5 offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of Grok 4.3 fully justifies the cost.
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Model Specs
Claude Sonnet 5
Benchmarks & Scores
Coding (swe-bench-pro)
63.2%excellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)
N/Agraduate-level science QA
Cost & Performance
Cost (per 1M tokens)
$4.00Input: $2.00 | Output: $10.00Context WindowLarger
1.05M tokensModel Specs
Grok 4.3
Benchmarks & Scores
Coding (swe-bench-pro)
N/Aexcellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)
90.1%graduate-level science QA
Cost & Performance
Cost (per 1M tokens)2.6x cheaper
$1.56Input: $1.25 | Output: $2.50Context Window
1M tokensFrequently Asked Questions about Claude Sonnet 5 vs Grok 4.3 comparison
Grok 4.3 is cheaper than Claude Sonnet 5. Grok 4.3 has a blended cost of $1.56/1M tokens, which is about 2.6x cheaper than Claude Sonnet 5 at $4.00/1M tokens.
Claude Sonnet 5 is better for coding tasks on this benchmark. It scores 63.2% on swe-bench-pro (excellent at multi-file repositories, autonomous agents, and industrial codebases) compared to Grok 4.3 which scores N/A.
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