Built by T-Minus AI · Free

Free AI tools for power users

Calculators, scorers, summarizers, and decision tools built for the way you actually work with AI. No signup. Run in your browser. Updated as the field moves.

Standalone tools

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AI Plan Comparator

Compare AI subscription tiers side-by-side

Source-verified comparison of ChatGPT, Claude, Google AI, and Perplexity plans — free, paid, team, and enterprise. Filter by need and see what you actually get for your money.

Verified May 25, 2026

Compare AI subscription plans before paying for another tool

Pricing intentNo signupUpdated weekly

AI Stack Builder

Find the right AI tools for your workflow and budget

Answer a few workflow questions and get a practical AI stack for coding, research, design, automation, team operations, or open-model deployment.

Verified May 25, 2026

Build a practical AI stack by workflow, budget, and capability

NewBudget routerMay 2026

Prompt Scorecard

Grade any AI prompt across 7 dimensions

Paste a prompt — get an instant letter grade and per-dimension fixes. Built on the 19 prompting laws used across ChatGPT, Claude, and Gemini.

Verified May 25, 2026

Grade and repair prompts before using them in real workflows

Letter gradeLocal-onlyFree

Transcript Summarizer

Briefs, action items, chapters from any transcript

Paste a YouTube transcript, podcast captions, or meeting notes. Get a clean brief, key takeaways, action items, chapter timestamps, and reusable AI prompts. Runs entirely in your browser.

Verified May 25, 2026

Turn pasted transcripts or notes into briefs, actions, chapters, and prompts

Privacy-firstNo uploadFree

Utility-led growth board

Built to be used, cited, and shared

These are the four assets to push first. Each one gives visitors a concrete output they can use immediately, then routes them into the next decision.

P0Verified May 25, 2026

AI Plan Comparator

A live AI plan tracker that compares ChatGPT, Claude, Google AI, and Perplexity by monthly cost, workflow fit, source links, and upgrade trigger.

plan matchmonthly costofficial sourceupgrade trigger
  • Angle: Which $20 AI plan is actually worth paying for this month?
  • Angle: The hidden difference between similar-looking AI subscription tiers
Open the live comparator
P0Verified May 25, 2026

AI Stack Builder

A workflow-first AI stack builder that returns a recommended stack, monthly cost, free alternative, and upgrade trigger instead of another generic best-tools list.

recommended stackmonthly costfree alternativeupgrade trigger
  • Angle: Stop buying AI tools one at a time. Build the stack around the workflow.
  • Angle: The free alternative matters before the paid upgrade pitch
Build my AI stack
P1Verified May 25, 2026

Prompt Scorecard

A browser-based prompt grader that scores prompts across seven dimensions and returns fix suggestions people can screenshot, copy, and reuse.

letter gradedimension scoresfix suggestionsmodel notes
  • Angle: Most bad AI output starts with an unscored prompt
  • Angle: A before/after prompt teardown is more useful than another prompt list
Grade your prompt
P1Verified May 25, 2026

Transcript Summarizer

A privacy-first transcript summarizer that turns pasted meeting notes, captions, or podcast transcripts into briefs, action items, chapters, and reusable prompts.

briefkey takeawaysaction itemschapters
  • Angle: A meeting transcript is wasted unless it becomes decisions and next actions
  • Angle: Turn one long video transcript into a brief, chapters, and reusable prompts
Summarize a transcript

Quick utilities

Live on /ai-picks

Coming soon

Token Calculator · Use-Case Router · Free-Tier Tracker

Cost calculation across providers, a "which AI for this task" router, and a live dashboard of what every free tier actually gives you. Subscribe to be notified when each one ships.

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Frequently asked

Are these tools really free?+

Yes. Every tool on this page is free to use, no signup required, and most run entirely in your browser. We make money from premium guides, affiliate referrals to genuinely useful AI tools, and paid Studio products — never from gating utilities.

How do these tools differ from the AI Picks page?+

AI Picks reviews third-party AI tools like ChatGPT, Claude, and Cursor — what to subscribe to. This page is the tools T-Minus AI built itself — calculators, scorers, summarizers — that help you decide and work better.

What's being added next?+

On the roadmap: a token counter and cost estimator, a "which AI for X" use-case router, and a live tracker of free-tier limits across the major AI providers. If you want to be first to use them, subscribe to the weekly newsletter.

Can I embed these tools on my own site?+

Not yet — embeddable widgets are on the roadmap. For now, please link to the tool URL with attribution.

Looking for product reviews?

See AI Picks 2026 →

Looking for what to subscribe to instead? Our AI Picks page reviews ChatGPT, Claude, Cursor, Copilot, Perplexity, and more — categorized by job-to-be-done.

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