What is Descript Underlord?

Underlord is Descript’s built-in AI video agent, which Descript calls “your all-in-one video agent.” It reads your script, watches your video, suggests and makes edits, takes feedback, makes bulk changes and can turn docs or slides into video, inside Descript’s text-based editor.

What is the best Underlord alternative?

For an agent that edits uploaded footage end to end and exports over MCP, Valmera. For podcasts recorded in Riverside, Co-Creator. For a timeline driven by your own AI, Vyra. For generated shots too, ChatCut, Cardboard or invideo. For phone-first edits, Captions.

Does Valmera edit video by editing text, like Descript?

Not by deleting words in a document. You name what to cut in chat (“remove the sentence about pricing”) and the agent cuts on word edges, or you trim on the timeline. Valmera’s transcript panel seeks the player and corrects words for captions. If you prefer cutting by deleting words yourself, Descript is built for that.

Does Valmera clean audio like Studio Sound?

No. Valmera has no audio denoise, so clean noisy recordings first or use a tool that has it. Valmera handles loudness, music fit, sound effects, voiceover and stem separation.

The best Descript Underlord alternatives in 2026

Underlord is Descript’s built-in video agent: it reads your script, watches your video, makes bulk edits and takes feedback inside Descript’s text-based editor. The best alternative depends on what you want instead. Pick Valmera for an agent that edits uploaded footage end to end and exports over MCP; Riverside Co-Creator if you record in Riverside; Vyra for a timeline driven by your own AI; ChatCut, Cardboard or invideo if you also want generated shots; Captions for one-tap AI edits on your phone.

Valmera publishes this guide and makes one of the tools in it. Underlord and competitor facts come from each vendor’s own site, checked October 6, 2026; sources are at the end.

What Underlord does, and why people look elsewhere

Descript calls Underlord “your all-in-one video agent.” It can read your script, watch your video and decide what to do next, suggest edits and take feedback, make bulk changes (center every speaker, bleep language, add lower thirds), write or critique scripts, and turn docs, slides, blog posts or screen recordings into video. Text-based editing, scenes and AI actions such as Studio Sound and filler-word removal stay available. The free plan includes limited Underlord use; Hobbyist adds access, and Creator adds full access plus 20+ more AI tools. Through Descript’s API and MCP, assistants such as Claude can trigger imports and Underlord edits, though direct media-file export through the API isn’t supported yet.

If Descript’s transcript editor is central to your workflow, Underlord is the natural agent to use with it. People look elsewhere when they:

Want a plain recording edited end to end, without managing a document-style project.
Want their own assistant to do the editing with real tools, rather than triggering Underlord.
Need the finished file exported by the agent or the API.
Record in Riverside, want generated shots, or work mainly on a phone.

Underlord alternatives compared

Agent, source footage, outside-AI access and export (checked October 6, 2026)
Alternative	Agent	Works on	Claude/ChatGPT access	Export
Valmera	Built-in agent that checks its own preview	Your uploaded footage	Remote MCP; your assistant edits with the tools and can export	Full-resolution MP4
Riverside	Co-Creator	Riverside recordings and uploads	Riverside MCP on Grow and above	Up to 4K; publishing
Vyra	Vyra AI or your own	Your uploaded clips	Remote MCP; project open in a browser tab	MP4 or WebM
ChatCut	AI panel agent	Footage + generated shots	Plugin for desktop agent apps	MP4/WebM, SRT, XML
Cardboard	Director	Footage, prompts or both	Claude Code or Codex via the Mac app	MP4, NLE exports
invideo	Editing agent + custom agents	Footage + generated shots	Remote MCP server	Video or NLE project
Captions	AI Edit + chat editor	Talking videos on phone or web	None listed	Video export

The 7 Underlord alternatives

Valmera

Best for: An agent that edits a plain recording end to end

Upload a recording and describe the edit. Valmera’s agent works from a word-level transcript with speaker labels and the video frames: it cuts dead air, filler and retakes, adds word-timed captions, reframes, adds b-roll, music and sound effects, and splits long videos into shorts. It renders a preview, checks frames and audio, fixes what it finds and reports back. Over MCP, your own assistant edits with the same tools and can export the MP4 with export_final.

Good to know: No audio denoise like Studio Sound, no SRT files and no team seats yet. Valmera vs Descript

Riverside Co-Creator

Best for: Podcasts and interviews you record in Riverside

Co-Creator, Riverside’s chat agent, cleans up filler and pauses, enhances audio, fixes eye gaze, makes platform-ready clips and writes show notes, inside an editor built around separate-track recordings. Riverside MCP lets Claude, ChatGPT or Cursor edit, clip and schedule posts.

Good to know: Riverside MCP is included on Grow plans and above. Riverside alternatives

Vyra

Best for: A full timeline driven by your own AI

Vyra edits uploaded clips by chat with its built-in AI, or lets Claude, ChatGPT or Cursor do the editing over MCP, on a timeline with split, slip and ripple. Its strengths are beat-synced cuts, word-timed captions, motion graphics generated as code and reference-style matching.

Good to know: MCP edits need the project open in a browser tab. Valmera vs Vyra

ChatCut

Best for: Chat editing with generated shots and a pro handoff

ChatCut pairs an AI panel with a multitrack timeline and transcript editing, generates video, images, music and voiceovers, and exports SRT subtitles, Premiere or Resolve XML and CapCut drafts. Its Agent Plugin lets the Claude Code, Codex and WorkBuddy desktop apps edit a project.

Good to know: Runs on the web, macOS and Windows. Valmera vs ChatCut

Cardboard

Best for: An agent with generation, voice cloning and NLE exports

Cardboard’s Director agent builds a first cut from your footage, a prompt or both and checks its own work; you refine it by chat or on the timeline. Its Mac app lets your own Claude or Codex agent edit local footage.

Good to know: Chrome or Apple Silicon Mac only. Cardboard alternatives

invideo

Best for: An agent on a multitrack editor, with team editing

invideo’s editing agent logs every clip, applies one instruction across many shots and works on a timeline you can take over at any frame. Generative models, custom agents and multiplayer editing are built in, and its remote MCP server connects Claude, ChatGPT, Codex and Cursor.

Good to know: Exports a video or a Premiere Pro, Final Cut Pro or Resolve project. Valmera vs invideo

Captions

Best for: One-tap AI edits on your phone

Pick a style and AI Edit cuts scenes and adds b-roll; the chat-based editor handles follow-ups, alongside captions, translated subtitles, AI avatars, eye-contact correction and denoise. Apps for iPhone and Android, plus the web.

Good to know: Mirage Studio has merged into Captions. Valmera vs Captions

How to choose

You love editing text: stay with Descript; Underlord is built for its editor.
A plain recording, edited end to end from one brief: Valmera.
You record in Riverside: Co-Creator.
Your own AI edits with real tools: Valmera, Vyra or invideo, which run remote MCP servers.
Generated shots in the edit: ChatCut, Cardboard or invideo.
Phone-first: Captions.

Try the same request in Valmera

Upload your recording in Studio (MP4, MOV, M4V, MKV or WebM, up to 14 GB and 3 hours).
Describe the edit as you would to Underlord.
The agent edits, renders a preview, checks it and reports back. Revise in chat or on the timeline.
Export a full-resolution MP4, or let Claude or ChatGPT do it all over MCP.

Prompts to paste:

Edit this webinar down to 8 minutes: keep the demo and the Q&A about pricing, cut dead air and filler words, and add captions.

Turn the best three answers into 9:16 shorts with a hook in the first line, then render previews so I can review them.

Creating an account and uploading are free. Editing requires a subscription. See plans. Related: text-based video editing, remove filler words, AI clip maker.

Valmera’s limits

No audio denoise (“studio sound”), podcast recording or AI music generation.
Captions are burned in, with no SRT/VTT import or export. English is the best-tested transcription language.
No text-to-video generation, team seats or direct social publishing yet.
Paid exports end with a brief Valmera end card.

Frequently Asked Questions

Sources

Vendor pages checked October 6, 2026.

Descript: Underlord · Pricing · API and MCP
Riverside: Co-Creator · MCP · Pricing
Vyra: Homepage · MCP
ChatCut: Homepage · Agent Plugin
Cardboard: Homepage · Changelog
invideo: Homepage · Remote agents (MCP)
Captions: Homepage
Valmera: MCP server card

Hand Valmera your next edit

Describe the edit and get back a checked, full-quality MP4, from Studio or your own assistant. Creating an account and uploading are free; editing requires a subscription.

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