11 free tools · no sign-up

Get a straight reading on your AI text, cost, and prompts.

Every tool here gives you a number, not a guess: an AI-likelihood score, a token count, a dollar estimate. Paste, run, read the dial.

AI Detection

Check whether text was written by AI, how confident that reading is, and how to interpret it.

Paste any text to get a human-vs-AI likelihood reading, sentence by sentence.

Rewrite stiff, AI-sounding text into varied, natural sentences.

Compare two passages and see how closely their wording and structure match.

See the sentence-length variation and predictability stats detectors actually use.

Count tokens, estimate API spend, and plan around context-window limits before you build.

Count tokens for GPT, Claude and Gemini models before you hit the API.

Compare per-request and monthly cost across OpenAI, Anthropic and Google models.

See how much of a model's context window your prompt and documents actually fill.

Estimate word, character and token counts as you draft a prompt.

Write, measure, and reuse prompts that actually get consistent results.

Searchable, categorized prompts you can copy and adapt in one click.

Clean up, structure and lint a system prompt before you ship it.

Inspect image files for the signals that hint at AI generation or editing.

Inspect an image's metadata and file signals for hints of AI generation.

Each tool page includes a full guide on how the score is calculated and what it does and doesn't prove, so you're never just staring at a number.