AI models & tools
Theo Nakamura
Theo writes about the machinery behind AI writing — which models are worth using, what they cost, and how to wire them up through OpenRouter or Mistral. He tests more free models than is strictly healthy.
Contact: theo@kudowrite.com
Articles by Theo
The Hidden Cost of 'Free' AI Writing Apps
Are AI writing apps actually free? Usually not. Here's what 'free' really costs — markup, credit traps, and your manuscript as training data — and the honest alternative.
July 18, 2026 · 7 min read
Best Free AI for Writing Stories in 2026: An Honest Tier List
The best free AI for writing stories in 2026, prose-tested. Which free OpenRouter models actually write good fiction, which to skip, and how to run them free.
July 15, 2026 · 7 min read
Use Different AI Models for Drafting and Editing to Cut Your Writing Costs
Learn to use different AI models for drafting and editing: draft cheap on free models, polish on a premium one, and slash your AI writing bill without losing quality.
July 14, 2026 · 7 min read
Which AI Model Is Best for My Genre? A Writer's Cheat Sheet
Which AI model is best for my genre? Match model to scene — romance, horror, LitRPG, sci-fi, literary — with picks, reasons, and why swapping mid-draft wins.
July 12, 2026 · 7 min read
The Best OpenRouter Models for Creative Writing, Tested on Real Prose
The best OpenRouter models for creative writing, judged by how they actually write fiction — dialogue, pacing, voice — not benchmark scores. With picks for every budget.
July 11, 2026 · 7 min read
Cheapest AI Models That Still Write Genuinely Good Prose (2026)
The cheapest AI model for writing fiction isn't the free one that mangles your voice. A cost-per-1k-words ranking of OpenRouter models that actually read well.
July 10, 2026 · 6 min read
Bring Your Own AI Model: Why It Beats Subscription Writing Apps
A bring your own model AI writing app charges nothing on top of your own key. Here's why BYO beats a $20/mo subscription — no markup, no lock-in, pennies per use.
July 7, 2026 · 6 min read
What Is OpenRouter for Writers? A Plain-English Guide (No API Experience Needed)
What is OpenRouter for writers? One key, hundreds of AI models, no markup. A plain-English guide for fiction writers who've never touched an API.
July 6, 2026 · 6 min read
How to Get an OpenRouter API Key and Write Fiction for Free (Step by Step)
A five-minute walkthrough: sign up for OpenRouter, grab a key, pick from OpenRouter free models for writing, and start your novel in KudoWrite at zero cost.
July 4, 2026 · 6 min read
Best AI Writing Tools for Fiction in 2026: Subscriptions vs. Bring-Your-Own-Model
The best AI writing tools for fiction, compared honestly: subscription apps, general chatbots, and bring-your-own-model. What each costs, and which one fits you.
June 28, 2026 · 6 min read
The Best Free AI Models for Writing Fiction (via OpenRouter)
A working novelist's honest guide to the best free AI models for writing fiction on OpenRouter — what's good for prose, what's not, and where the catch is.
June 28, 2026 · 7 min read