tokenizer-token-cost-monitor by gyeningcorp

Real-time token counts, costs & energy usage on ChatGPT, Claude, Gemini, Grok, DeepSeek + 25 more. Free, open source.

About this extension

Tokenizer is a free, open-source browser extension that shows you real-time token counts, estimated costs, and energy usage as you type on 30+ AI platforms. Supported platforms include ChatGPT, Claude, Gemini, Perplexity, Grok, DeepSeek, Mistral, Copilot, Meta AI, HuggingFace Chat, Poe, You.com, and many more including coding tools like Cursor, Bolt.new, v0.dev, and Replit. Features: Live token counter updates as you type. Cost estimates based on current model pricing. Energy usage estimates. Works on 30+ AI platforms out of the box. Privacy-first: all processing happens locally in your browser. No data collection, no tracking, no accounts required. Lightweight floating overlay that doesn't interfere with any site. Perfect for developers, researchers, content creators, and anyone who wants to understand and control their AI spending.

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Permissions and data

Required permissions:

Access your data for chat.openai.com
Access your data for chatgpt.com
Access your data for claude.ai
Access your data for gemini.google.com
Access your data for www.perplexity.ai
Access your data for perplexity.ai
Access your data for grok.com
Access your data for x.com
Access your data for chat.deepseek.com
Access your data for chat.mistral.ai
Access your data for copilot.microsoft.com
Access your data for meta.ai
Access your data for huggingface.co
Access your data for poe.com
Access your data for you.com
Access your data for pi.ai
Access your data for coral.cohere.com
Access your data for chat.lmsys.org
Access your data for cursor.com
Access your data for bolt.new
Access your data for v0.dev
Access your data for replit.com
Access your data for phind.com
Access your data for devv.ai
Access your data for codeium.com
Access your data for app.fireworks.ai
Access your data for console.groq.com
Access your data for app.together.ai
Access your data for sdk.vercel.ai
Access your data for aistudio.google.com
Access your data for platform.openai.com
Access your data for console.anthropic.com
Access your data for lmstudio.ai
Access your data for jan.ai
Access your data for msty.app
Access your data for localhost
Access your data for 127.0.0.1

Optional permissions:

Access your data for chat.openai.com
Access your data for chatgpt.com
Access your data for claude.ai
Access your data for gemini.google.com
Access your data for www.perplexity.ai
Access your data for perplexity.ai
Access your data for grok.com
Access your data for x.com
Access your data for chat.deepseek.com
Access your data for chat.mistral.ai
Access your data for copilot.microsoft.com
Access your data for meta.ai
Access your data for huggingface.co
Access your data for poe.com
Access your data for you.com
Access your data for pi.ai
Access your data for coral.cohere.com
Access your data for chat.lmsys.org
Access your data for cursor.com
Access your data for bolt.new
Access your data for v0.dev
Access your data for replit.com
Access your data for phind.com
Access your data for devv.ai
Access your data for codeium.com
Access your data for app.fireworks.ai
Access your data for console.groq.com
Access your data for app.together.ai
Access your data for sdk.vercel.ai
Access your data for aistudio.google.com
Access your data for platform.openai.com
Access your data for console.anthropic.com
Access your data for lmstudio.ai
Access your data for jan.ai
Access your data for msty.app
Access your data for localhost
Access your data for 127.0.0.1

Data collection:

The developer says this extension doesn't require data collection.