Pricing refreshes, new models, calculator features, and the occasional design pass. Nothing else.
Editorial redesign
A visual overhaul plus compare mode, saved scenarios, and live privacy receipts — the redesign moves the calculator from a serviceable utility to something that looks and behaves like a deliberate piece of dev infrastructure.
Redesigned every surface in an Editorial Quiet style: layered warm-dark, hero total in parchment gold (mono, tabular), Source Serif 4 accent on editorial pages.
Compare mode — toggle on the home calculator to see your prompt scored against all 10 models in a single sortable table.
Saved scenarios — keep up to 10 prompt + model + response-length combinations on this browser. Stored only in localStorage; nothing is uploaded.
Privacy receipts panel — live counters of outgoing requests, cookies, and localStorage keys so the privacy contract is verifiable by inspection.
Cost-split bar and context-window meter inline on the result card.
Mobile sticky total bar that surfaces the answer when the result card scrolls out of view.
Models index: vendor filters, sort by cost or context window, multi-select for side-by-side comparison.
Keyboard shortcuts — press ? for the full list. Includes Linear-style g-then-letter navigation.
New wordmark, monogram favicon, and per-model OG cards rebuilt to match.
Calibrated empty-state example chips so first-time visitors see a real result in one click.
OpenAI added; brand renamed to tokenmath
GPT-5 and GPT-4.1 families now use exact tokenization; the rest stay approximate. Project renamed from tokencount to tokenmath.
Added GPT-5, GPT-5 Mini, GPT-5 Nano, GPT-4.1, and GPT-4.1 Mini with exact o200k_base tokenization.
Brand and domain renamed: tokenmath / tokenmath.dev.
Pricing data verified against Anthropic, Google, and OpenAI public pricing pages on 2026-05-09.
pSEO routes regenerated with refreshed worked examples per family.
Initial release
Client-side LLM token counter for Anthropic Claude and Google Gemini. Tokenization in JavaScript on the user’s browser; nothing about the prompt leaves the device.
Claude 4.5 Sonnet, Claude 4.5 Haiku, Claude 4.7 Opus, Gemini 2.5 Pro, and Gemini 2.5 Flash supported with cl100k_base / o200k_base approximations.