The honest case for AI in interactive fiction is narrower and more interesting than the hype. Branching stories have a specific economic problem — every choice multiplies the writing — and AI is genuinely good at the multiplication: sketching the second and third paths, filling structural gaps, drafting the scene you know the shape of but haven’t the appetite to type. It is much less good at the things that make IF worth reading, which remain voice, consequence, and endings.
StorySplice’s AI tools are built around one mechanic that keeps the author in charge: everything the AI produces arrives as a suggestion you accept or reject before it enters the story. Nothing generates silently, every action is something you explicitly asked for, and each request counts against a visible daily budget — 10 calls a day free, 200 on Pro, which also unlocks choice of writing model. Your text is processed to fulfill your requests and is not stored by the AI provider or used for training.
Start with your own words. Every AI tool here works better on top of an established voice — a drafted opening, a pasted story, even three strong paragraphs. Generic input produces generic branches; give the tools something with a pulse and they echo it.
Use Splinter for structure, not sentences. Splinter’s real value is the analysis pass: paste linear prose and it proposes 4–7 branch points as "What if...?" questions pinned to moments in your text. Treat it as a structural editor surfacing your story’s latent forks — then build only the ones you would defend. The Splinter guide walks the full workflow.
Point Branch Wizard at moments that should split. From any scene, Branch Wizard proposes several diverging paths — including whether each should run to a new ending or curve back into your existing structure. Accept the trajectories, not the prose: it is a structural surveyor whose sentences you will replace.
Use Expand with AI as scaffolding, then cut. Expand takes a dead-end choice and drafts a chain of 2–5 connected scenes. First drafts of AI chains run long and end soft, so plan to compress: a five-scene expansion usually contains a good three-scene branch. Quick Write can fill multiple empty outline nodes at once — note it costs one call per node.
Reject more than you accept. Write, rewrite, and continue each offer a draft with accept and reject as equal buttons — the reject button is the craft. Take suggestions for rhythm or unblocking, rewrite anything that survives, and never accept a scene you would not read aloud. The accept-or-reject gate only protects your voice if you use both halves.
Reserve endings and consequences for yourself. The reliable AI failures in this form: choices that are safe variations rather than real alternatives, merged paths that forget what the reader chose, voice that flattens toward the pleasant, and endings that summarize instead of land. These are precisely the load-bearing walls of IF — see the craft guide — so draft the middles with help if you like, and write the endings yourself.
Budget the calls like a resource. Each action — write, rewrite, continue, a Splinter pass, a Branch Wizard run, an Expand — is one call. Free’s 10 daily calls reward structural uses (one Splinter analysis moves more story than ten paragraph rewrites); Pro’s 200 plus model choice suits heavy drafting phases.
The test that matters
A reader finishing your story should be unable to tell which scenes began as AI drafts — not because the drafts were good, but because nothing survived your revision unchanged. Used this way, the AI is closer to a tireless first-draft assistant with no taste than a co-author: it proposes, you dispose, and the accept-reject mechanic makes that relationship enforceable rather than aspirational. Writers who skip the revision step produce stories that read exactly like what they are, and no tool can save a story its author didn’t read closely.
Frequently asked questions
Can the AI write a whole story for me?
It can generate an outline from a premise and fill scenes, and the result will read like it. The tools are built for the opposite workflow: your voice and decisions, AI handling multiplication and scaffolding, every suggestion gated by accept-or-reject.
What counts as one AI call?
Each action is one call — a write, rewrite, or continue; a Splinter analysis or build; a Branch Wizard run; an Expand; a Smooth. Quick Write costs one call per empty node it fills. Manual editing, reading, and publishing never count.
Which AI models are available?
Free accounts write with Kimi K2.5. Pro unlocks model choice, currently including Gemini Flash and GLM 4.7 Flash — useful because models differ noticeably in prose temperament.
Is my writing used to train AI models?
No. Text is sent to the model only to fulfill the action you requested, via OpenRouter, and is not stored by the provider or used for training.
Will readers know I used AI?
There is no watermark or label; an exported or published story is simply your story. Whether readers can tell depends entirely on how much revision stood between the draft and the publish button.