Claude 3 Opus

Claude 3 Opus was Anthropic’s flagship model when the Claude 3 family launched in March 2024, sitting above Sonnet and Haiku as the largest and most capable of the three. It handled complex analysis, long documents, and multi-step tasks better than any earlier Claude model, and at launch it beat GPT-4 on several public benchmarks, which helped establish Anthropic as a serious frontier lab rather than a distant second to OpenAI. It reads both text and images, supports a 200,000 token context window, and is priced at $15 per million input tokens and $75 per million output tokens, well above the Sonnet and Haiku tiers released alongside it. Anthropic has since shipped several generations of stronger, cheaper models, so Claude 3 Opus is now considered a legacy model rather than a current recommendation.