OpenAI GPT-5 mini VS xAI Grok 4.5
⚖️Our Take
This matchup represents a clear tradeoff between peak intelligence and budget efficiency. Grok 4.5 is noticeably superior (holding a 15.2% average lead in benchmarks), but it carries a significant 4.4x price premium. Choose Grok 4.5 if you need top-tier reasoning or code debugging, but for high-volume pipelines, GPT-5 mini is the smarter business decision.
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Benchmarks & Scores
Coding (swe-bench-pro)
45.7%excellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)
81.6%graduate-level science QA
Cost & Performance
Cost (per 1M tokens)4.4x cheaper
$0.69Input: $0.25 | Output: $2.00Context Window
400k tokensBenchmarks & Scores
Coding (swe-bench-pro)Winner (+19.0%)
64.7%excellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)Winner (+11.4%)
93%graduate-level science QA
Cost & Performance
Cost (per 1M tokens)
$3.00Input: $2.00 | Output: $6.00Context WindowLarger
500k tokensFrequently Asked Questions about GPT-5 mini vs Grok 4.5 comparison
GPT-5 mini is cheaper than Grok 4.5. GPT-5 mini has a blended cost of $0.69/1M tokens, which is about 4.4x cheaper than Grok 4.5 at $3.00/1M 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 GPT-5 mini which scores 45.7%.
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