TokenLens
Count tokens & compare LLM costs — free, instant, private
What is TokenLens?
TokenLens counts your text's tokens exactly with OpenAI's official tokenizer and shows how it fits into 22+ models' context windows — GPT-5, Claude, Gemini, DeepSeek, Qwen, GLM, Kimi, Grok and more. See per-model input costs and per-1M pricing, auto-synced from the open LiteLLM database. 100% client-side: free, no sign-up, your text never leaves the browser.
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