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 →