AI Writing Tools — Complete Guide

Instead of hunting through 80+ separate pages, this guide gathers every AI writing tool on ToolStackTools into a single workflow-first hub. Whether you're rewriting a paragraph, drafting a cold email, generating LinkedIn hooks, or building a full business plan, the same underlying gateway powers each tool with a modern chat model. You start with 2 free generations per month — no signup — and unlock 100 credits + 10 monthly by creating a free account. This page explains which tool to pick for which job, how to chain tools together, and what separates a good prompt from a great one.

Alle tools

Pick the right AI tool for the job

Every AI writing tool on ToolStackTools is optimised for one specific output: an essay writer produces argument-first structure, a caption generator produces hook-first micro-copy, a cover-letter tool weaves your CV into a company narrative. Using the specialised tool almost always beats writing a generic prompt in a chat window, because the tool sends a tuned system prompt, temperature, and output format behind the scenes. Browse the tool list below and start with the one that matches your deliverable, not the one closest to your topic.

Chain tools for higher quality output

AI writing works best as a pipeline, not a one-shot. A typical high-quality workflow: (1) AI Outline Generator for structure, (2) AI Paragraph Writer or Essay Writer for the first draft, (3) AI Tone Changer or Paraphrasing Tool to adjust voice, (4) AI Grammar Fixer for a final polish, (5) AI SEO Meta Description Generator if you're publishing. Each step costs one credit but adds a measurable quality lift compared to asking a single tool to do everything.

How to write prompts that actually work

Vague prompts produce vague output. The three levers that matter most are audience, format, and constraint. 'Write about marketing' fails. 'Write a 120-word LinkedIn post for a Series-A SaaS founder, first-person, one contrarian claim, no emoji' succeeds. Every tool has a text area — treat it like a mini brief: state who the reader is, the length and format you need, the tone, and one thing to avoid. That single change typically halves the number of regenerations you need.

Free trial, credits and privacy

You get 2 free AI generations per month per device with no signup. Create a free account and you receive 100 credits instantly plus 10 fresh credits every month. Need more? Buy any amount from 50 to 5000 credits with volume discounts (€0.012 down to €0.0067 per credit). Your prompts are sent to the AI gateway to generate a response and are not stored, sold, or used for training. Utility tools (PDF, image, calculators) remain fully free and do not use credits.

When not to use an AI writing tool

AI is excellent at first drafts, restructuring, tone shifts and idea expansion. It is not a replacement for lived expertise, verified facts, or your personal voice. Never publish AI text on legal, medical, or financial topics without expert review. For academic work, check your institution's policy on AI assistance — most universities allow it as a drafting aid but require disclosure. And always read the output before you send it: AI models still hallucinate names, dates, and statistics.

Veelgestelde vragen

Which AI model powers these tools?

All AI tools route through the Lovable AI Gateway using a modern instruction-tuned chat model. The exact model may be upgraded over time; we always pick the best free-tier model available so your output quality improves automatically.

Do I need an account to try the AI tools?

No. You get 2 free generations per month per device with no signup. Create a free account only when you want more — you'll get 100 bonus credits instantly plus 10 fresh credits every month.

How much do credits cost if I need more?

Custom top-ups from 50 to 5000 credits with volume discounts: from €0.012 per credit at the smallest tier down to €0.0067 per credit at the largest tier. No subscription, no monthly commitment.

Can I use the AI output commercially?

Yes. You own the output and can use it in client work, marketing, products, or internal documents. Standard AI content best practice applies: review facts, edit for accuracy, and add your own expertise.

Are my prompts stored?

No. Prompts are sent to the AI gateway only to generate a response and are not stored, sold, or used to train models.