Claude Opus 4vsClaude 3.5 Haiku

Claude Opus 4 is Anthropic's most powerful AI model, holding the #1 position on the Chatbot Arena leaderboard. It represents a breakthrough in extended thinking and agentic capabilities, able to work autonomously on complex multi-step tasks for hours. With a 200K token context window, it excels at analyzing entire codebases, lengthy legal documents, and research papers in a single pass. The model demonstrates exceptional performance in coding (setting new benchmarks on SWE-bench), advanced reasoning, and nuanced writing tasks. Its agentic capabilities allow it to use tools, navigate computers, and execute multi-step workflows with minimal human oversight. Opus 4 is the preferred choice for enterprises requiring the highest quality output on mission-critical tasks where accuracy and depth matter more than speed or cost.

Claude 3.5 Haiku, developed by Anthropic, is a speed-optimized model with a 200K token context window designed for high-throughput production workloads. The model excels at fast code generation, data extraction, classification, and real-time conversational AI where sub-second response times are critical. Despite being the lightest model in Anthropic's current lineup, Claude 3.5 Haiku delivers performance that surpasses many larger models on coding and structured reasoning tasks. It supports tool use, vision capabilities, and system prompts for production deployments. Priced at $0.80 per million input tokens and $4.00 per million output tokens, it offers strong price-to-performance ratio. Claude 3.5 Haiku ranks #12 on the Chatbot Arena leaderboard, positioning it as one of the strongest compact models available from any major provider.