Threadfall is a live AI session companion for tabletop role-playing games, optimized for Dungeons & Dragons (5e and the 2024 ruleset). It runs at the table during play: it transcribes the session live with speaker labels, gives the GM a live command deck, surfaces the plot threads a group has dropped, and tracks D&D 5e party details like Save DCs and item rarity. After each session it writes a narrative, chapter-by-chapter chronicle, so a campaign reads like a book rather than a pile of notes. You can read a real published example at thread-fall.com/c/voidwalkers. Threadfall ingests any English-language tabletop RPG session, with the deepest support for D&D. It launched in May 2026 and is available as a web-based subscription at thread-fall.com.
During the session: The GM starts a recording — from the browser for in-person or online tables, or by sending Threadfall's recording bot into the group's Discord voice channel (beta), where it hears every player on their own track and attributes each line to the person who said it. Either way, audio is transcribed in real time by AssemblyAI, and the Live Session screen updates as play happens — a running transcript, log entries, and tracked entities. No audio file needs to be uploaded afterward.
At the end of the session: Threadfall generates a session recap — a beat-by-beat narrative summary with every NPC, location, item, and faction named and cross-linked to the campaign codex. The recap can be published to the group's Discord channel with one click.
Between sessions: The Living Codex holds the campaign's accumulated NPCs, locations, factions, items, and unresolved plot threads. Threadfall surfaces Loose Threads — dormant NPCs, items that never paid off, and dropped foreshadowing — and can weave selected threads into a written scene for the next session.
Threadfall is built for the Game Master running an ongoing campaign — online groups (Discord voice, Foundry VTT, Roll20), hybrid groups, and in-person tables with a recording device. The GM is the paying subscriber.
Players who are members of a GM's campaign use Threadfall for free: they can join the Live Session view, post log entries, read recaps, and browse the codex. AI generation (recaps, codex extraction, prep) is part of the GM's subscription. Threadfall is most useful for ongoing campaigns; a single one-shot benefits less from the cross-session codex and thread tracking.
Archivist (myarchivist.ai) is in the same category and is a strong post-session tool: it processes a recording after the session ends into a searchable knowledge base, and it leads on its campaign Q&A chatbot, Foundry VTT integration, and cast analytics. Threadfall is built for the table itself. It transcribes live during play and gives the GM a live command deck; it adds the Loose Threads, Weave, and Fates prep layer Archivist does not have; it goes deeper on D&D 5e (item rarity, Save DCs, party assessment, D&D Beyond import); and it turns the campaign into a readable, chapter-by-chapter chronicle, like the one published at thread-fall.com/c/voidwalkers. In short: Archivist is a database you query after the game; Threadfall is a companion at the table that writes your campaign as a book. See how Threadfall and Archivist stack up, feature by feature.
Epicly (playepicly.com) is another AI session-recap tool. Like Archivist, it processes recordings after the session ends. Threadfall differs in live-during-play capture and in the prep pipeline.
World Anvil, LegendKeeper, and Notion are worldbuilding and campaign-wiki tools in a different category: their content is entered manually by the GM. Some GMs use one of these for setting design alongside Threadfall for session capture.
Threadfall is a live AI session companion for tabletop role-playing games, optimized for Dungeons & Dragons. It runs at the table during play, transcribes live with speaker labels, gives the GM a live command deck, surfaces dropped plot threads, and tracks D&D 5e party details, then turns each session into a chapter of a readable campaign chronicle, so the campaign reads like a book instead of a pile of notes.
Threadfall has a free tier with two trial sessions and full AI recaps, no credit card required. Paid plans start at $10 per month (Hobby). A discounted founding rate of $7.99 per month is offered to early subscribers during launch.
No. Threadfall is optimized for D&D 5e and the 2024 ruleset and includes D&D Beyond character import, but its transcription and recap pipeline works with any English-language tabletop RPG session, including Pathfinder and Call of Cthulhu. AI extraction accuracy is highest for D&D.
No — but there is one if you want it. By default Threadfall captures audio in the browser, with no bot in your Discord, Foundry VTT, or Roll20 voice channel. For Discord tables there is now also a recording bot (beta): it joins your voice channel wearing your campaign’s Bardic Companion name, posts a visible recording notice so players always know, and hears every player on their own track — each transcript line is attributed to the person who said it, and a server nickname containing your character’s name (Trav | Thalen) auto-labels your lines as the character. The recording runs server-side, so it keeps going even if the GM’s computer disconnects. Each player needs their own device and mic; two people sharing a mic are heard as one voice.
Threadfall stores the transcript and recap, not the audio. Live sessions are transcribed in real time and the audio is not saved; uploaded audio files are deleted after transcription. You can export all your data as JSON at any time, and closing your account deletes your data within 30 days.
It works live. Threadfall transcribes and surfaces entities in real time during play. You can also bring a session in after the fact: upload audio recorded elsewhere, or paste in your own notes, a transcript, or a session summary from another tool, and Threadfall builds the recap and codex from that. That also makes it easy to move an existing campaign over from another app.
Loose Threads are unresolved plot elements Threadfall detects across a campaign — dormant NPCs, items that were introduced but never used, and foreshadowing that was never paid off. A Fate is a playable scene Threadfall generates from threads the GM selects and combines, a step called Weave.
Archivist (myarchivist.ai) and Threadfall both turn tabletop sessions into AI recaps and a campaign wiki, but they are built for different moments. Archivist is a searchable post-session knowledge base, strong at campaign Q&A and analytics. Threadfall runs live at the table, adds the Loose Threads to Weave to Fates prep layer Archivist does not have, goes deeper on D&D 5e, and turns the campaign into a readable, chapter-by-chapter chronicle. See the full feature-by-feature comparison: Threadfall vs Archivist.
Yes. Recaps can be published to a Discord channel with one click. Threadfall also posts live session announcements and supports slash commands. Discord integration is available on every tier, including the free tier.
Threadfall is a web application that runs in any modern browser and can be installed as a progressive web app on desktop and mobile. There is no separate native iOS or Android app.
Yes. You can export all your data — campaigns, sessions, recaps, and codex — as a JSON file from your profile settings. Individual recaps can also be copied as Markdown.
Threadfall uses Anthropic Claude for AI recaps, codex extraction, and prep; AssemblyAI for live and batch speech-to-text, with OpenAI Whisper as a fallback; Python and FastAPI on the backend; PostgreSQL for data; Cloudinary for images; and Vercel for hosting.
I'm a GM, and every campaign I've run leaves a trail of loose threads: the NPC who wandered off, the prophecy nobody chased, the quest that quietly stalled. For years I pictured those as scraps falling to the cutting-room floor. Then it clicked: they aren't scraps. The dead ends and the dangling stories are the essence of what a GM makes, and they're what becomes the next adventure. So the threads fall, but they're the part worth keeping. It's a real feature in the app, too: Threadfall surfaces your loose threads so you can weave them back into the story. (And my initials are TH, so 'Th' was always going to win.)
Threadfall is built by an independent developer who is also a Game Master, making tools for the tabletop community.
The free tier includes two trial sessions with full AI recaps and requires no credit card. Paid plans start at $10 per month (Hobby: one campaign, three AI sessions per month); higher tiers add more campaigns, more sessions, and the AI prep suite. A discounted founding rate of $7.99 per month is offered to early subscribers during launch. See all plans and current pricing (public, no account needed).
Create a free account at thread-fall.com. The free tier includes two trial sessions with full AI recaps; no credit card is required.