Speed Matters: How Browser Use Achieves the Fastest Agent Execution

Browser Use 1.0 (BU 1.0) is a browser agent designed for speed, achieving 65.7% accuracy on the OnlineMind2Web benchmark while matching models like Gemini 2.5 Computer Use. The agent's primary advantage is its execution speed, completing tasks in an average of 68 seconds, which is significantly faster than competing models. This performance is achieved by primarily interacting with a text-based DOM representation, only using vision and screenshots when necessary to avoid latency from image encoders. Further optimizations include leveraging the KV cache for conversation history, using a separate LLM-powered tool to extract specific information from the DOM, and designing a concise action space to minimize expensive output tokens.