Ultra-fast and cost-effective model optimized for quick responses and high-volume processing. Delivers reliable performance for routine tasks while maintaining multimodal capabilities at the most accessible pricing tier.
- Ultra-fast processing with the most cost-effective pricing in the Claude family
- Reliable performance for routine tasks and high-volume automated applications
- Multimodal capabilities supporting both text and image processing efficiently
- Quick and accurate responses optimized for simple to moderate complexity tasks
- Budget-friendly option ideal for applications requiring speed over maximum intelligence
Model Information
Supported Formats
Claude Sonnet 4.5State-of-the-art coding model released September 2025, achieving 77.2% on SWE-bench Verified (82% with high compute). Excels at autonomous multi-step tasks for 30+ hours with enhanced tool coordination, context management, and computer use capabilities. Most aligned frontier model with improved security against prompt injection.
Claude Haiku 4.5Fast, cost-efficient model released October 2025, achieving 73.3% on SWE-bench Verified. Delivers performance comparable to Claude Sonnet 4 at one-third the cost and more than twice the speed. First Haiku model with extended thinking, computer use, and context awareness capabilities. ASL-2 safety classification with lower misalignment rates than larger models.
Claude Opus 4.5Premium model released November 2025, combining maximum intelligence with practical performance. Features 200K token context window with 64K max output, extended thinking support, and priority tier access. Knowledge cutoff March 2025 with training data through August 2025. Offers the best balance of intelligence and efficiency for complex reasoning tasks.