Free AI Tools for Real Work
Seven free tools we built for ourselves and the NMM community. No signup, no email gate, no upsell wall. Plus 50+ in-depth guides on tokens, ROI, prompting, and AI stack selection — everything we learned running AI workflows at scale.
AI Token Counter & Cost Estimator
Paste any text, see exact token counts and monthly cost across GPT-5, Claude 4, Gemini 2.0, and 6 more models. Built for budgeting AI features before you ship.
Open the counter → View tool →Deep-dive guides (16)
- How much does ChatGPT cost per month?
- GPT-5 vs GPT-4o cost comparison
- Claude API pricing explained
- Gemini 2.0 Pro vs Flash pricing
- 15 ways to cut ChatGPT API costs by 50-90%
- What is a token in AI models?
- AI context window comparison 2026
- The 7 cheapest AI models in 2026
- AI cost per 1,000 requests, calculated
- Prompt caching with OpenAI and Anthropic
- How to fix "context length exceeded" errors
- ChatGPT Team vs Enterprise pricing
- How to get 50% off with the Batch API
- When small language models beat the giants
- How many tokens in a page of text?
- How to project AI costs for 12 months
AI ROI Calculator
See exactly how much AI will save your business per year. Task-by-task breakdown with real productivity benchmarks from McKinsey, GitHub, and 100+ NMM case studies.
Calculate your ROI → View tool →Deep-dive guides (16)
- The AI ROI formula every executive should know
- How many hours does AI actually save?
- How to write an AI business case that gets approved
- When does an AI tool pay for itself?
- AI vs hiring — when AI is genuinely cheaper
- AI ROI for small businesses
- How AI changes agency unit economics
- AI marketing ROI by channel
- ROI of AI cold email at scale
- AI customer support ROI
- AI content marketing ROI
- AI productivity benchmarks 2026
- AI stack budget for a 10-person agency
- AI stack for ecommerce
- Calculating AI automation payback period
- How to measure AI impact on your business
AI Prompt Generator
Stop typing "write me a blog post about X" and getting generic output. Build structured, expert-grade prompts using the proven Role/Task/Context/Format framework. Works with any LLM.
Generate a prompt → View tool →Deep-dive guides (15)
- 15 techniques for better ChatGPT prompts
- The Role/Task/Context/Format framework
- ChatGPT vs Claude for writing
- Prompt engineering for beginners
- Chain-of-thought prompting explained
- Few-shot prompting with real examples
- 25 AI prompt templates for marketing
- 20 AI prompt templates for sales
- 18 AI prompt templates for coding
- How to avoid "AI slop" in your writing
- System prompt best practices
- How to prompt for reliable JSON output
- Prompt engineering vs fine-tuning
- Multi-turn conversation prompting
- How to organize an AI prompt library
AI Stack Recommender
Answer 5 questions about your role, budget, and priorities. Get a personalized AI tool stack with estimated monthly cost, time savings, and direct links to start each tool. Free — no signup required.
Get my AI stack → View tool →AI Content Roaster
Paste any blog post, email, or landing page. Get a brutal 6-dimension score: hook strength, clarity, specificity, emotional pull, CTA strength, and anti-AI-slop. No signup. Runs in your browser.
Roast my content → View tool →AI Prompt Optimizer
Paste any raw prompt. Score it across 5 RTCF dimensions and get a rewritten version with missing pieces filled in — role, task, context, format, and examples. Works with any LLM. Free, browser-based.
Optimize my prompt → View tool →AI Video Script Generator
Choose platform (YouTube, TikTok, Reels, LinkedIn), topic, length, and tone. Get a structured script with platform-specific hook, main beats, payoff, and CTA. Pure browser-based, no AI calls.
Generate my script → View tool →AI Content Detector Comparison
Compare 8 AI content detectors side-by-side — Originality.ai, Copyleaks, GPTZero, Winston, Sapling, ZeroGPT, Turnitin, Scribbr. Real accuracy data, false-positive rates, pricing, and API features. Sortable, filterable, no signup.
Compare detectors → View tool →ChatGPT vs Claude Cost Calculator
Pick team size, billing cycle, and usage tier. See exact monthly and annual cost for ChatGPT Business vs Claude Team, plus break-even math and an API cost estimator. July 2026 pricing, no signup.
Compare the numbers → View tool →AI Image Cost Calculator
Estimate cost per image, monthly spend, and cost per usable image across DALL·E (API), Midjourney (subscription), Stable Diffusion (hosted or self-hosted), and Flux-style pay-per-image APIs.
Calculate image costs → View tool →Want the courses behind these tools?
The tools are free. The systems that scale them — pricing strategy, prompt libraries, ROI measurement, team rollout — live inside the NMM Business School.
Browse the courses →