xAI Grok 4.20 VS xAI Grok 4.5
👑Our Take
Grok 4.5 is the superior choice here. It holds a 8.0% average lead in benchmarks while actually being more cost-effective (saving 1.0x on API costs compared to Grok 4.20). Unless you have specific provider lock-in, go with Grok 4.5.
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Benchmarks & Scores
Coding (swe-bench-pro)
51.8%excellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)
90%graduate-level science QA
Cost & Performance
Cost (per 1M tokens)
$3.00Input: $2.00 | Output: $6.00Context WindowLarger
1.05M tokensBenchmarks & Scores
Coding (swe-bench-pro)Winner (+12.9%)
64.7%excellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)Winner (+3.0%)
93%graduate-level science QA
Cost & Performance
Cost (per 1M tokens)
$3.00Input: $2.00 | Output: $6.00Context Window
500k tokensFrequently Asked Questions about Grok 4.20 vs Grok 4.5 comparison
Both Grok 4.20 and Grok 4.5 cost the same, with a blended cost of $3.00 per 1 million 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 Grok 4.20 which scores 51.8%.
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