A round-up of the free AI tools and skills we've built at HumanSpark AI - practical helpers for fact-checking, prompting, and getting more out of the work you already do.
Skills and prompts
A skill is a custom assistant for one repeatable job. ChatGPT and Claude both call it a Skill. Copy it into your assistant once and it's saved. A prompt is pasted in each time you need it.
- AI Prompt Creator - turn a rough idea into a clear, well-structured prompt.
- Source Checker - check every claim in a draft against the documents it is based on.
- Beta Tester - get feedback from a simulated panel of testers built for your audience.
- Fact and Claim Checker - check every claim in an article against the web before you publish.
- Red Team Prompt - find the weak arguments in a proposal or strategy before a client does.
Interactive tools
Tools you can use right here on the site.
- Verification Tax Calculator - estimate what unreliable AI output is really costing your team.
- Text Cleaner - fix case, UK/US spelling, and find-and-replace, with a diff view.
- Framework Library - 40+ shareable frameworks for thinking about AI in your business.
Choosing a platform
The four main assistants are closer than their marketing suggests. For most teams the choice comes down to what you already use: Microsoft 365, Google Workspace, or neither.
Each has a free tier, a paid plan for one person, and business plans for teams. Prices and limits change every few months, so we've linked to each vendor's own pricing page rather than copy numbers that'd go stale.
- ChatGPT - OpenAI's plans.
- Claude - Anthropic's plans.
- Gemini - Google's AI plans. For teams, Gemini comes with Google Workspace.
- Microsoft Copilot - Microsoft 365 Copilot plans.
Whichever you pick, a business plan matters more than the model. It's where you get admin controls and the data terms you'll want once more than one person is using it.
