OpenAI GPT-5.4 VS xAI Grok 4.5
👑Our Take
Grok 4.5 is the superior choice here. It holds a 3.6% average lead in benchmarks while actually being more cost-effective (saving 1.9x on API costs compared to GPT-5.4). Unless you have specific provider lock-in, go with Grok 4.5.
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Benchmarks & Scores
Coding (swe-bench-pro)
57.7%excellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)
92.8%graduate-level science QA
Cost & Performance
Cost (per 1M tokens)
$5.63Input: $2.50 | Output: $15.00Context WindowLarger
1.05M tokensBenchmarks & Scores
Coding (swe-bench-pro)Winner (+7.0%)
64.7%excellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)Winner (+0.2%)
93%graduate-level science QA
Cost & Performance
Cost (per 1M tokens)1.9x cheaper
$3.00Input: $2.00 | Output: $6.00Context Window
500k tokensFrequently Asked Questions about GPT-5.4 vs Grok 4.5 comparison
Grok 4.5 is cheaper than GPT-5.4. Grok 4.5 has a blended cost of $3.00/1M tokens, which is about 1.9x cheaper than GPT-5.4 at $5.63/1M 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-5.4 which scores 57.7%.
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