When working with large language models like Claude from Anthropic, understanding how many tokens your input consumes is essential for managing costs and optimizing performance. In this blog, we’ll explore how to calculate token counts for a given input using Go. We’ll use Anthropic’s count_tokens API endpoint, which provides a straightforward way to determine token usage.PrerequisitesBefore diving in, ensure you have:A working Go environment (installation guide).An Anthropic API key. Set it as an environment variable (ANTHROPIC_API_KEY).Basic knowledge of Go HTTP requests an...