AnthropicModels

Claude 3 Haiku is Anthropic's fastest and most compact model. It's designed for high-throughput, cost-effective applications where speed is a priority.

Claude 3.5 Haiku is Anthropic's fastest model. It offers intelligence at blazing speeds.

Claude Haiku 4.5 is Anthropic's fastest and most intelligent Haiku model. It has the near-frontier intelligence at blazing speeds with extended thinking and exceptional cost-efficiency.

Claude 3 Opus is Anthropic's most powerful model, designed for highly complex tasks. It excels at tasks requiring deep expertise, nuanced understanding, and careful analysis.

Claude Opus 4 is Anthropic's previous flagship model. It has very high intelligence and capability.

Claude Opus 4.1 is Anthropic's exceptional model for specialized complex tasks. It has a very high level of intelligence and capability.

Claude Opus 4.5 is Anthropic's premium model combining maximum intelligence with practical performance. It’s intelligent, efficient, and the best model in the world for coding, agents, and computer use. It’s also meaningfully better at everyday tasks like deep research and working with slides and spreadsheets.

Claude 3.5 Sonnet is an improved version of Claude 3 Sonnet. It offers enhanced performance while maintaining the balance between intelligence and speed.

Claude 3.7 Sonnet is Anthropic's intelligent model. It offers the highest level of intelligence and capability with toggleable extended thinking.

Claude Sonnet 4 is Anthropic's high-performance model with exceptional reasoning and efficiency.

Claude Sonnet 4.5 is Anthropic's best model for complex agents and coding. It has the highest level of intelligence across most tasks with exceptional agent and coding capabilities.