Free tools

Token counters

Paste any text. Get a token count for the exact model family you're targeting. Everything runs in your browser — no upload, no account.

Claude token counter

Approximate token counts for Claude Opus, Sonnet, and Haiku. Anthropic doesn't ship an offline tokenizer, so this uses a char-based estimate within ±10% of the real count.

Open tool →

Gemini token counter

Approximate token counts for Gemini 3.x, 2.5 Pro, Flash, and Flash-Lite. Google's tokenizer isn't open source, so this uses a char-based estimate within ±10%.

Open tool →

Universal token counter

Paste any text. See token counts for GPT, Claude, and Gemini side by side — plus characters and words. Fully client-side, nothing leaves your browser.

Open tool →

OpenAI token counter

Exact token counts for GPT-5, GPT-4o, GPT-4.1, o3, and o4-mini, using the official o200k_base tokenizer. Runs in your browser — your text is never uploaded.

Open tool →