Show HN: In-browser LLM token counter and cost estimation

Category: devtools

Tags: llm, token-counter, cost-estimation

Score: 4.7/10 (Innovation: 4, Technical: 5, Documentation: 4, Utility: 5)

A browser-based tool for counting tokens and estimating costs across multiple LLM model families using real tokenizers that run locally. It enables privacy-preserving cost comparison and context window analysis without uploading data to any server.

Target audience: backend devs, data engineers

Repository: https://holaclaw.ai/tools/token-studio

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