TL;DR: A good AI script tool gives you a hook that lands, a structure that holds, and a voice that does not read as AI. Here are the 8 that do it for video, podcast, and social scripts in 2026 — and where each one stops.
Most "best AI script writing" lists rank a dozen tools that are really the same underlying model behind different pricing. The useful split is by what you are scripting. A raw LLM like ChatGPT or Claude is the flexible, cheap default for almost any script and hard to beat if you can write a decent prompt. A marketing-copy tool like Jasper or Copy.ai trades that flexibility for templates and a saved brand voice, which matters when a team has to stay on-message. A screenwriting app like Squibler gives you real scene-and-dialogue formatting a general chatbot will not. A recording tool like Descript keeps the script next to the take. And a prompt-to-video generator like invideo writes the script only as a step toward the finished clip. So this list sorts them by the job, not a single ranking.
I run Kompozy, so I will be straight about where it sits: it is not a bare script writer, and I have kept it last, not first, on purpose. If what you want is a script to read, edit, or hand to someone, one of the dedicated writers below is the cleaner tool. Kompozy writes the script and then produces and publishes the video from it — a different job, covered honestly in its slot. Prices were verified in July 2026; every one of these vendors reshuffles tiers and credits often, so confirm on the vendor page before you buy. For the prompt-craft side of this, see /how-to/use-chatgpt-to-write-video-scripts, and for the end-to-end version, /how-to/build-an-ai-script-to-video-pipeline.
#1 · General-purpose script writing · Free; Plus $20/mo
ChatGPT (OpenAI)
Verdict: Best all-round default — the most flexible AI script writer, and free to start.
Best at: Give it a rough brief and it drafts a video, podcast, or social script, iterates on hooks, tightens to a runtime, and rewrites in a tone you describe. Nothing is more flexible for the money, and custom instructions let you carry a rough style between sessions. The right first stop before you pay for anything specialized.
Limit: Output is generic without a strong prompt or style guide, AI-tell creeps in on autopilot, brand memory is limited, and it hands you text — producing and publishing the actual video or episode is still all on you.
#2 · Natural, long-form scripts (podcasts, long YouTube) · Free; Pro $20/mo
Claude (Anthropic)
Verdict: Best for scripts that need to sound human — long podcast and narration work especially.
Best at: Claude writes the most natural, least "AI-tell" prose of the chat models, holds a voice across a long script, and matches a tone well from a sample — which makes it the pick for conversational podcast scripts and long-form YouTube narration where a robotic cadence would show.
Limit: It is a text chat, not a script UI: no ad-format templates, no runtime timing tools, and no publishing. You copy the script out and take it from there.
More →#3 · Marketing & ad video scripts (templates + brand voice) · Pro $59/mo (billed annually), $69 monthly
Jasper
Verdict: Best template-driven writer for marketing and ad scripts a team has to keep on brand.
Best at: Purpose-built templates for video ads, VSLs, YouTube, and social scripts, plus a saved Brand Voice so a whole team's output stays on-message. Guided prompting for people who do not want to engineer prompts from scratch.
Limit: You are paying a premium over a raw LLM for what is essentially structured prompting; general prose quality trails Claude, and it stops at the script — no video, no publishing.
More →#4 · Short-form social & ad scripts at volume · Chat plan from $24/mo (annual), $29 monthly
Copy.ai
Verdict: Best for churning out short scripts, hooks, and captions in bulk.
Best at: Fast, structured templates for TikTok and Reels hooks, short ad scripts, and captions, with workflows that batch many variants at once. Note that since its pivot toward a go-to-market platform, the once-generous free tier has been cut back sharply, so budget for the paid plan.
Limit: Tuned for short marketing copy, not long narrative or podcast scripts; output is generic without your own inputs, and there is no video or publishing layer around it.
#5 · Screenplay-format & long-form video scripts · Free (limited); Plus $29/mo ($16 annual)
Squibler
Verdict: Best when you actually need real screenplay formatting, not chatbot paragraphs.
Best at: Proper script structure — scene headings, action lines, dialogue, parentheticals — plus AI drafting and an outline-to-manuscript workflow, aimed at screenwriters and long-form video creators who need format, not just words.
Limit: Overkill for a 60-second social script; it is built for narrative and screenwriting, so it is the wrong tool for ad hooks, captions, or podcast show notes.
#6 · Podcast & video scripts tied to recording + editing · Free; Hobbyist ~$24/mo ($16 annual)
Descript
Verdict: Best if you want the script to live next to the recording and the edit.
Best at: Write or generate a script, record against it, then edit the video or audio by editing the transcript. Underlord AI drafts scripts, show notes, and clips — the script and the edit are one document, which suits podcasters and talking-head creators.
Limit: It is an editor first: the AI writing tools are lighter than a dedicated script writer, and you are paying for a full recording and editing suite you may not need just to draft a script.
#7 · Prompt-to-video (script auto-written as a step) · Free (10 min/week); Plus ~$25/mo ($20 annual)
invideo AI
Verdict: Best if you want the script and the finished video generated from one prompt.
Best at: Type a topic and it writes the script, narrates it, pulls stock footage, and assembles a complete video — and you can revise the generated script by giving plain-text instructions. Fastest path from idea to a rough cut.
Limit: The script is auto-generated and less controllable as a standalone deliverable; output has a stock-footage look, and unused credits do not roll over.
More →#8 · Writes the script AND produces + publishes the content · $99/mo Starter
Kompozy
Verdict: Not a bare script tool — the engine for when the script is a means to finished, published content.
Best at: Point it at a blog, podcast, or URL and it writes the script in your Persona Brief voice, then renders it as a HeyGen persona/avatar short — or fans the same source into carousels, quote cards, blogs, and newsletters — auto-captions and brand-frames it, and publishes across 9 platforms on one credit line. The script never leaves as a loose document; it becomes the video.
Limit: If you just want a script to read, hand to an editor, or paste elsewhere, a dedicated writer above (ChatGPT, Claude, Jasper) is the cleaner tool. Kompozy produces and ships the content the script is for — it does not hand you the script itself.
More →What is the best AI tool for script writing in 2026?
For flexibility and price, ChatGPT is the best general default and free to start; for scripts that need to sound human — long podcasts and narration — Claude leads. For marketing and ad scripts with a shared brand voice, Jasper; for short social hooks at volume, Copy.ai; for real screenplay formatting, Squibler; for a script tied to your recording, Descript; and for a script plus a finished video from one prompt, invideo. Match the tool to what you are scripting rather than to a single ranking.
Is there a free AI script writing tool?
Yes. ChatGPT and Claude both have capable free tiers that handle most video, podcast, and social scripts. Squibler has a limited free tier, and invideo offers 10 minutes of AI generation a week. Free tiers usually cap length, credits, or exports, so treat them as a trial — but for drafting a script specifically, a free LLM goes a long way.
What is the best AI tool for writing video scripts specifically?
For a script you will produce yourself, ChatGPT or Claude with a good prompt beats most purpose-built tools — Claude if the delivery needs to sound natural on camera. If you want the script and the video generated together, invideo writes and assembles in one prompt. And if the script is meant to become an on-brand persona or avatar video that gets published, Kompozy writes it in your voice and renders and ships it. See /how-to/use-chatgpt-to-write-video-scripts for the prompt frameworks.
Do AI-written scripts sound like AI?
They can, and it is the main risk. Generic prompts produce rule-of-three filler, empty superlatives, and a flat cadence readers now recognize. The fixes are the same across tools: feed the model a sample of your real voice, give it a specific brief instead of a topic, and edit the draft rather than shipping it raw. Claude tends to need the least cleanup; template tools like Jasper stay on brand but can read formulaic without your inputs.
How is Kompozy different from a script writing tool?
A script tool hands you words. Kompozy writes the script in your Persona Brief voice as the first step of producing the content — it then renders a persona or avatar video, auto-captions and brand-frames it, fans the same source into carousels, blogs, and newsletters, and publishes across nine platforms. If you only need the script itself, use ChatGPT, Claude, or Jasper. If the script exists to become published video and posts, that end-to-end job is what Kompozy is built for. For the tool-level view, see /roundups/best-ai-content-tool-2026.
If you produce across three or more output formats, Kompozy is the consolidation pick: one Persona Brief, one credit line, every format covered. If you only work in one format, the vertical specialist in that lane is cheaper and tighter.