OpenAI GPT-5.5 Pro VS xAI Grok 4.5
📊Our Take
Standardized reasoning and coding benchmarks are currently pending verification for one or both of these models. We recommend testing GPT-5.5 Pro and Grok 4.5 directly in their respective provider playgrounds to see which fits your specific prompt styles best.
Was this recommendation helpful?
Benchmarks & Scores
Coding (swe-bench-pro)
N/Aexcellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)Winner (+3.2%)
96.2%graduate-level science QA
Cost & Performance
Cost (per 1M tokens)
$67.50Input: $30.00 | Output: $180.00Context WindowLarger
1.05M tokensBenchmarks & Scores
Coding (swe-bench-pro)
64.7%excellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)
93%graduate-level science QA
Cost & Performance
Cost (per 1M tokens)22.5x cheaper
$3.00Input: $2.00 | Output: $6.00Context Window
500k tokensFrequently Asked Questions about GPT-5.5 Pro vs Grok 4.5 comparison
Grok 4.5 is cheaper than GPT-5.5 Pro. Grok 4.5 has a blended cost of $3.00/1M tokens, which is about 22.5x cheaper than GPT-5.5 Pro at $67.50/1M tokens.
Related Matchups
Explore similar comparisons for GPT-5.5 Pro and Grok 4.5.