The Grok 4.20 Reasoning model has claimed the top spot in the BridgeBench reasoning benchmark, as reported on April 15. This achievement places Grok 4.20 ahead of notable competitors such as OpenAI's GPT-5.4, Anthropic's 1M-token Claude Opus 4.6, and a model from Google. The announcement was made by WesRoth on social media, highlighting Grok 4.20's superior performance in this highly competitive field.