TurnTwo Workbench

by Jay@TurnTwo · turntwo.dev · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Claude-optimization tools in a side panel — count tokens, audit prompts, compare model costs — right alongside claude.ai.

Users

0 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#296K

#242K among extensions

Version

0.1.0

updated 15 Jun 2026

Users

monthly, 4 months

Latest, 15 Oct 2026: 3 usersMove the mouse over the chart for any month

Ratings count

monthly, 4 months

Latest, 15 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About TurnTwo Workbench

A side panel for builders working with the Claude API. Open it next to claude.ai (or any tab) and run the TurnTwo Workbench tools without leaving the page: • Count tokens in any text (≈ within 10% of Claude's tokenizer) • Audit a prompt for the most common cost mistakes — and what fixing them saves • Find wasteful phrasing (hedges, filler, wordiness) with leaner replacements • Compare what a call would cost across Claude, GPT, and Gemini It's free, needs no account and no API key, and the tools run on TurnTwo's servers — the extension only sends the text you type into the panel. For generative work (rewriting, drafting) use Claude itself; this panel is for the exact numbers Claude can't compute on its own. Part of the TurnTwo Workbench: https://turntwo.dev/use