01Comparison
AI Tools
ChatGPT Free vs Plus: five thresholds for solo work
Compare search, files, data analysis and Deep Research by where real work stops—not by a feature checklist alone.
RESEARCH ARCHIVE
Find the decision you need
Pricing, limits, terms and changing conditions—organized around a question, not a product directory.
12 RESEARCH NOTESNewest evidence check first
02Comparison
AI Tools
Claude Free vs Pro: what to check before paying $20
A practical comparison of Free, Pro and the boundary where long-document work justifies regular paid access.
03Comparison
AI Tools
Gemini Free vs Google AI Pro: decide beyond the Gmail integration
Separate model access, long-context work, Google integrations and bundled storage before deciding to upgrade.
04Comparison
AI Tools
Perplexity Free vs Pro: four research criteria beyond query counts
Compare basic search, Pro Search, Research, file analysis and model choice by source accuracy and completion time.
05Deep dive
AI Tools
How to start a work research project in NotebookLM
Choose the first source set, ask questions that expose disagreement and turn answers into a verifiable research note.
06Deep dive
AI Tools
Can you enter confidential data into generative AI? A six-part check
Review the contract, account type, model-improvement setting, retention, connected services and the sensitivity of the input before sending it.
07Guide
AI Tools
How to turn off model training in ChatGPT without deleting history
Find the Data Controls setting, understand what it changes and distinguish it from Temporary Chat and business data terms.
08Comparison
AI Tools
Are free AI meeting notes practical? Check Notta's limits and extra costs
Evaluate transcription minutes, per-recording limits, exports, speakers and privacy before relying on a free meeting workflow.
09Deep dive
AI Tools
Can generative AI output be used commercially? Seven checks before publishing
Separate provider terms from copyright, trademarks, privacy, source material, disclosure and client obligations.
10Comparison
AI Tools
How far can free generative AI plans take you? Five criteria by task
Compare free AI plans by task completion, limits, source work, files and data conditions instead of a single ranking.
11Comparison
AI Tools
When does AI meeting software pay off? A time-based cost model
Calculate recording, cleanup, review and distribution time instead of comparing subscription prices alone.
12Update watch
AI Tools
When generative-AI terms change: the order to check business impact
Move from an announcement to a decision about input data, output rights, sharing, integrations and internal policy.