The Precision AI Toolkit
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50+ Free AI Tools
The biggest free AI toolkit for professionals on the internet. Calculators, generators, compliance checklists, AI-powered writers, and decision tools. No signup, no email wall, no nonsense.
50+Free Tools
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Developer Infrastructure
LLM benchmarks, price calculators, token counters
Benchmark
Free
Tool
LLM Leaderboard
MMLU, HumanEval, GPQA scores for 20 frontier models — Claude, GPT-5, Gemini, Llama 4, more.
Calculator
Free
Tool
LLM Price Calculator
Compare API costs across 10 models at your volume. Scenario sharing + cache pricing.
Counter
Free
Tool
Token Counter
Count tokens for Claude, GPT-5, Gemini with cost estimates per model.
Visual
Free
Tool
Context Window Visualizer
See what fits in 1M tokens vs 128K. Overlay books, codebases, docs, datasets.
Picker
Free
Tool
AI Model Picker
Which LLM for your use case? Scored rubric across 10 models with transparent methodology.
Calculator
Free
Tool
GPU / VRAM Calculator
15 open models, 12 hardware options. Real VRAM math, cloud costs, recommendations.
Comparator
Free
Tool
Vector Database Comparator
Pinecone vs Weaviate vs Chroma vs Qdrant vs pgvector vs Milvus. Honest specs + decision helper.
Benchmark
Free
Tool
Embedding Model Benchmark
15 embedding models compared on MTEB scores, cost, dimensions, and use case.
Decision
Free
Tool
RAG vs Fine-Tune Decision Tool
10 questions → ranked recommendation across prompt eng, RAG, LoRA, full fine-tune, and hybrid.
AI-Powered Productivity
Resume rewriters, email drafters, code reviewers
AI
Free
Tool
AI Resume Rewriter
Tailor your resume to any job. AI rewrites bullets with quantified achievements.
AI
Free
Tool
Cover Letter Generator
Write a real cover letter in 30 seconds. No clichés, under 300 words.
AI
Free
Tool
Interview Answer Coach
Paste your draft answer. AI scores you 1-10, explains weaknesses, rewrites in STAR format.
AI
Free
Tool
Meeting Notes → Action Items
Paste messy notes. Get summary, decisions, action items with owners, and open questions.
AI
Free
Tool
Email Response Drafter
Draft the right reply with any intent and tone. Under 150 words, ready to send.
AI
Free
Tool
AI Code Reviewer
Senior-engineer review in seconds. Bugs, security, perf, with severity tags.
AI
Free
Tool
SQL Query Builder
English → SQL with explanation. Supports Postgres, MySQL, BigQuery, Snowflake.
AI
Free
Tool
Git Commit Generator
Paste your diff. Get a conventional-commits message that explains WHY.
AI
Free
Tool
AI Tone Rewriter
Rewrite any text in formal, casual, warm, confident, urgent, or 7 other tones.
AI
Free
Tool
Article Summarizer
Long text → key takeaways, executive summary, tweet thread, or LinkedIn post.
AI
Free
Tool
API Error Decoder
Paste any error. Get plain-English explanation, root cause, and 3 things to check.
Compliance & Federal
OMB M-25-21, EU AI Act, NIST, OWASP, HIPAA
Checklist
Free
Tool
Federal AI Compliance Checker
OMB M-25-21 + NIST AI RMF assessment with ATO-ready export.
Classifier
Free
Tool
EU AI Act Risk Classifier
Classify your system under the EU AI Act's 4 risk tiers with article citations.
Generator
Free
Tool
NIST AI RMF Model Card Generator
Structured form → formatted model card with NIST RMF mapping. Export as markdown or PDF.
Assessment
Free
Tool
OWASP LLM Top 10 Risk Assessor
Score your LLM app against all 10 OWASP LLM Top 10 risks with mitigations.
Checklist
Free
Tool
HIPAA AI Compliance Checklist
15-question HIPAA AI assessment with specific CFR citations and vendor list.
Checker
Free
Tool
SBIR Eligibility Checker
Are you eligible for SBIR Phase I/II? Real 13 CFR 121 rules, agency fit recommendations.
AI
Free
Tool
SBIR Proposal Reviewer
Score your SBIR draft against the standard rubric before submission.
AI
Free
Tool
Federal RFP Analyzer
Paste any SAM.gov opportunity. Get requirements, go/no-go score, and proposal outline.
Checklist
Free
Tool
AI Ethics Checker
12-question ethics assessment with EU AI Act, NIST, GDPR references and PDF export.
Career & Learning
Career quizzes, interview coaches, certifications
Quiz
Free
Tool
AI Career Quiz
Find your best-fit AI career path based on your background and goals.
Planner
Free
Tool
AI Learning Path Builder
5 questions → 90-day personalized AI roadmap with week-by-week plan and calendar export.
Analyzer
Free
Tool
AI Job Impact Analyzer
40 roles scored against AI disruption with cited sources from McKinsey, Goldman, Stanford.
Assessment
Free
Tool
AI Readiness Assessment
Assess your organization's or your own AI readiness with specific action items.
Generator
Free
Tool
AI Resume Bullet Generator
Generate quantified resume bullets for 30+ AI/tech roles.
Scanner
Free
Tool
ATS Resume Scanner
Real keyword-matching algorithm. Get match score + missing keywords from any job description.
Library
Free
Tool
AI Interview Question Bank
60+ curated ML/AI interview questions with expert answers, searchable by topic + difficulty.
Database
Free
Tool
AI Certification Database
20+ AI certifications compared: AWS, Azure, Google, Coursera, Stanford, DeepLearning.AI.
Calculator
Free
Tool
AI Salary Calculator
Real salary data by role, experience, city, and skill stack.
Calculator
Free
Tool
Section 127 Tax Calculator
Calculate your tax-free employer education benefit under IRS Section 127.
Business & Planning
Cost calculators, use case finders, ROI
Calculator
Free
Tool
AI Project Cost Calculator
Estimate build vs buy vs hybrid costs for your AI project. With realistic assumptions.
Calculator
Free
Tool
AI ROI Calculator
Input hours saved, wage rate, adoption — get payback period and annual savings.
Finder
Free
Tool
AI Use Case Finder
Industry + department → 10 curated AI use cases with difficulty and time-to-implement.
Picker
Free
Tool
AI Tool Picker
49-tool curated database. Filter by category, budget, use case, audience.
Glossary
Free
Tool
AI Jargon Decoder
68 AI/ML terms explained in plain English. Searchable.
Generator
Free
Tool
AI Prompt Generator
20+ template categories. Build better Claude, GPT, Gemini prompts with explicit structure.
Library
Free
Tool
AI Prompt Library
20+ battle-tested prompts for writing, coding, business, research, career, creative.
Recommender
Free
Tool
Chart Type Recommender
Describe your data and goal. Get the right chart type with pure-CSS examples.
Developer Utilities
JSON formatter, cron builder, regex tester
Utility
Free
Tool
JSON Formatter & Tree Viewer
Format, validate, minify, explore JSON. Line-accurate errors. 100% browser-side.
Utility
Free
Tool
Cron Expression Builder
Build or parse cron expressions with plain-English explanation + next 5 run times.
Utility
Free
Tool
Regex Tester & Explainer
Live regex matching, explainer, replace mode, 15 common patterns, cheat sheet.
Industry Guides
Healthcare, finance, legal, real estate, government
Guide
Free
Tool
AI for Federal Government
OMB M-25-21, FedRAMP, IL5, SBIR pathways, agency use cases. Bo's core audience.
Guide
Free
Tool
AI for Healthcare
HIPAA, FDA, 20 use cases, real case studies from Mayo, UPMC, Aidoc, Abridge.
Guide
Free
Tool
AI for Finance & Banking
SR 11-7, fraud detection, 20 real banking AI use cases with tools and compliance.
Guide
Free
Tool
AI for Legal Professionals
ABA ethics, Mata v. Avianca, 20 legal AI use cases, 12 tools compared.
Guide
Free
Tool
AI for Real Estate
18 AI use cases for agents, brokers, investors, and property managers. Fair housing notes.
Developer Infrastructure
LLM & AI Infrastructure Tools
Everything you need for production LLM work: pricing, tokens, context, benchmarks, and model selection.
LLM Leaderboard
MMLU, HumanEval, GPQA scores for 20 frontier models — Claude, GPT-5, Gemini, Llama 4, more.
LLM Price Calculator
Compare API costs across 10 models at your volume. Scenario sharing + cache pricing.
Token Counter
Count tokens for Claude, GPT-5, Gemini with cost estimates per model.
Context Window Visualizer
See what fits in 1M tokens vs 128K. Overlay books, codebases, docs, datasets.
AI Model Picker
Which LLM for your use case? Scored rubric across 10 models with transparent methodology.
GPU / VRAM Calculator
15 open models, 12 hardware options. Real VRAM math, cloud costs, recommendations.
Vector Database Comparator
Pinecone vs Weaviate vs Chroma vs Qdrant vs pgvector vs Milvus. Honest specs + decision helper.
Embedding Model Benchmark
15 embedding models compared on MTEB scores, cost, dimensions, and use case.
RAG vs Fine-Tune Decision Tool
10 questions → ranked recommendation across prompt eng, RAG, LoRA, full fine-tune, and hybrid.
AI-Powered Tools
AI Writers, Coaches & Analyzers
Real AI-powered tools for writing, coding, and analysis. Zero signup, zero key required — we handle the infrastructure.
AI Resume Rewriter
Tailor your resume to any job. AI rewrites bullets with quantified achievements.
Cover Letter Generator
Write a real cover letter in 30 seconds. No clichés, under 300 words.
Interview Answer Coach
Paste your draft answer. AI scores you 1-10, explains weaknesses, rewrites in STAR format.
Meeting Notes → Action Items
Paste messy notes. Get summary, decisions, action items with owners, and open questions.
Email Response Drafter
Draft the right reply with any intent and tone. Under 150 words, ready to send.
AI Code Reviewer
Senior-engineer review in seconds. Bugs, security, perf, with severity tags.
SQL Query Builder
English → SQL with explanation. Supports Postgres, MySQL, BigQuery, Snowflake.
Git Commit Generator
Paste your diff. Get a conventional-commits message that explains WHY.
AI Tone Rewriter
Rewrite any text in formal, casual, warm, confident, urgent, or 7 other tones.
Article Summarizer
Long text → key takeaways, executive summary, tweet thread, or LinkedIn post.
API Error Decoder
Paste any error. Get plain-English explanation, root cause, and 3 things to check.
Compliance & Federal
Compliance Checklists & Decision Tools
Real compliance tools with actual regulatory citations. EU AI Act, NIST AI RMF, OMB M-25-21, HIPAA, OWASP LLM Top 10.
Federal AI Compliance Checker
OMB M-25-21 + NIST AI RMF assessment with ATO-ready export.
EU AI Act Risk Classifier
Classify your system under the EU AI Act's 4 risk tiers with article citations.
NIST AI RMF Model Card Generator
Structured form → formatted model card with NIST RMF mapping. Export as markdown or PDF.
OWASP LLM Top 10 Risk Assessor
Score your LLM app against all 10 OWASP LLM Top 10 risks with mitigations.
HIPAA AI Compliance Checklist
15-question HIPAA AI assessment with specific CFR citations and vendor list.
SBIR Eligibility Checker
Are you eligible for SBIR Phase I/II? Real 13 CFR 121 rules, agency fit recommendations.
SBIR Proposal Reviewer
Score your SBIR draft against the standard rubric before submission.
Federal RFP Analyzer
Paste any SAM.gov opportunity. Get requirements, go/no-go score, and proposal outline.
AI Ethics Checker
12-question ethics assessment with EU AI Act, NIST, GDPR references and PDF export.
Career & Learning
Career, Learning & Interview Tools
From career discovery to interview prep. Every tool built by practitioners for working professionals.
AI Career Quiz
Find your best-fit AI career path based on your background and goals.
AI Learning Path Builder
5 questions → 90-day personalized AI roadmap with week-by-week plan and calendar export.
AI Job Impact Analyzer
40 roles scored against AI disruption with cited sources from McKinsey, Goldman, Stanford.
AI Readiness Assessment
Assess your organization's or your own AI readiness with specific action items.
AI Resume Bullet Generator
Generate quantified resume bullets for 30+ AI/tech roles.
ATS Resume Scanner
Real keyword-matching algorithm. Get match score + missing keywords from any job description.
AI Interview Question Bank
60+ curated ML/AI interview questions with expert answers, searchable by topic + difficulty.
AI Certification Database
20+ AI certifications compared: AWS, Azure, Google, Coursera, Stanford, DeepLearning.AI.
AI Salary Calculator
Real salary data by role, experience, city, and skill stack.
Section 127 Tax Calculator
Calculate your tax-free employer education benefit under IRS Section 127.
Business & Planning
Business, Cost & ROI Tools
For founders, consultants, and enterprise teams planning AI initiatives.
AI Project Cost Calculator
Estimate build vs buy vs hybrid costs for your AI project. With realistic assumptions.
AI ROI Calculator
Input hours saved, wage rate, adoption — get payback period and annual savings.
AI Use Case Finder
Industry + department → 10 curated AI use cases with difficulty and time-to-implement.
AI Tool Picker
49-tool curated database. Filter by category, budget, use case, audience.
AI Jargon Decoder
68 AI/ML terms explained in plain English. Searchable.
AI Prompt Generator
20+ template categories. Build better Claude, GPT, Gemini prompts with explicit structure.
AI Prompt Library
20+ battle-tested prompts for writing, coding, business, research, career, creative.
Chart Type Recommender
Describe your data and goal. Get the right chart type with pure-CSS examples.
Developer Utilities
Dev Utilities (100% Client-Side)
Universal dev tools. All run in your browser. Your data never leaves your machine.
JSON Formatter & Tree Viewer
Format, validate, minify, explore JSON. Line-accurate errors. 100% browser-side.
Cron Expression Builder
Build or parse cron expressions with plain-English explanation + next 5 run times.
Regex Tester & Explainer
Live regex matching, explainer, replace mode, 15 common patterns, cheat sheet.
Industry Guides
Industry-Specific AI Guides
Deep curated guides with real case studies, compliance notes, and vendor lists per industry.
AI for Federal Government
OMB M-25-21, FedRAMP, IL5, SBIR pathways, agency use cases. Bo's core audience.
AI for Healthcare
HIPAA, FDA, 20 use cases, real case studies from Mayo, UPMC, Aidoc, Abridge.
AI for Finance & Banking
SR 11-7, fraud detection, 20 real banking AI use cases with tools and compliance.
AI for Legal Professionals
ABA ethics, Mata v. Avianca, 20 legal AI use cases, 12 tools compared.
AI for Real Estate
18 AI use cases for agents, brokers, investors, and property managers. Fair housing notes.
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