Claude Sonnet 4.5

Claude Sonnet 4.5 is a premium model built for demanding professional workloads, developed by Anthropic. It achieves a quality score of 67 on the Artificial Analysis Intelligence Index, placing it among the top-performing models currently available.

This model is particularly strong at coding, writing, analysis, creative. It supports chain-of-thought reasoning, which helps with complex multi-step problems. It also handles image inputs, making it suitable for visual understanding tasks.

At $3.00 per 1M input tokens and $15.00 per 1M output tokens, running 500 tasks per month (at ~45K tokens each) would cost approximately $175.50/month. Compare this with alternatives using our cost calculator to find the best fit for your budget.