# What is Ghosti? The in-compose AI agent for X, explained (2026) > Ghosti explained: the draft-only, bring-your-own-key Chrome extension that writes tweets and replies inside X. Its features, real pricing, and where it falls short. URL: https://voicemoat.com/blog/what-is-ghosti ## Key facts - Published: 2026-08-06 - Category: AI and Voice - Read time: 9 minutes - Author: VoiceMoat team - Publisher: VoiceMoat - Topics: Ghosti; AI Twitter tools; Chrome extensions for Twitter; AI writing tools; BYOK AI tools ## Key points - Ghosti (ghostiapp.com) is a Chrome extension that lives inside X's compose box and sidebar, drafting tweets, replies, threads, and meme captions in a style you configure. - It is draft-only by design: it never auto-posts and never asks for your X login or OAuth. You click Post yourself. That is a genuine account-safety stance. - It is bring-your-own-key (BYOK): you plug in your own AI provider API key and pay that provider directly (roughly $5/mo for ~1,000 generations), on top of Ghosti's own subscription (from $18.99/mo after a 7-day trial). There is no permanent free tier. - You set its voice by picking a personality, tone, and topics, and optionally naming creators to blend as inspiration. It does not show any per-draft voice score, and it is X-only (Reddit and LinkedIn are marked coming soon). - It is very early-stage: no verifiable third-party reviews, an unnamed maker, and a Chrome Web Store listing with a handful of users. Judge it on the trial. If you want a voice you can verify across X and LinkedIn without managing API keys, VoiceMoat is worth weighing (our product; judge it on your writing). ## Related articles - What is VoiceMoat?: https://voicemoat.com/blog/what-is-voicemoat ## FAQ Q: What is Ghosti (ghostiapp.com)? A: Ghosti is a Chrome extension that adds an AI writing agent ("Boo") inside X's compose box. It drafts tweets, replies, threads, and meme captions in a style you configure, never posts for you, and never asks for your X login. It is bring-your-own-key (you supply your own AI provider key) and X-only, and it is an early-stage product. Q: How much does Ghosti cost? A: Ghosti's subscription is $18.99/mo (a promo against a listed $24.99) after a 7-day trial, or $49.99/year framed as early access. A $199.99 lifetime plan is listed as coming soon. There is no free tier. On top of that, because it is BYOK, you pay your own AI provider directly, roughly $5/mo for about 1,000 generations. The prices are on the vendor's page only, so verify them at ghostiapp.com. Q: Does Ghosti auto-post to X? A: No, and that is deliberate. Ghosti is draft-only: it writes the post, reply, or thread inside X, but you always click Post yourself. It also never asks for your X login or OAuth access. That is a genuine account-safety stance and a contrast with tools that auto-post or automate replies, which is what tends to get accounts flagged. Q: Does Ghosti show a voice score on drafts? A: No. You set a personality, tone, and topics, and can name creators to blend as inspiration, but Ghosti shows no per-draft voice score, so there is no visible read of how closely a draft matches you. It is also a configured style rather than a model trained on your own posting history. For a visible voice-match read, VoiceMoat shows how many of your voice signals line up on each draft. Q: Is Ghosti legit? What is its rating? A: It is a real, working extension, but very early: no verifiable reviews on G2, Capterra, Trustpilot, Product Hunt, or the AI directories, an unnamed maker, and a Chrome Web Store listing with a single review and few users. "Ghosti" also collides with unrelated names (Ghost, Ghostery, various ghostwriter tools), so ratings you find elsewhere are probably not this product. Judge it on the trial, not reviews. Q: What is the best Ghosti alternative? A: It depends on what you want. For a verifiable voice across X and LinkedIn with no API keys to manage, VoiceMoat. For a viral library and hosted AI writing, Tweet Hunter. For the cleanest writing surface, Typefully. For an AI ghostwriter, Postwise. Ghosti's own niche is the in-compose, BYOK, draft-only setup, which is what you would be giving up by switching. Source: https://voicemoat.com/blog/what-is-ghosti Site overview: https://voicemoat.com/llms.txt. AI usage policy: https://voicemoat.com/ai.txt.