Builds the whole ad, not a clip
Brief it once and the Solid Agent writes the concept, picks the takes, writes the script, adds the voice and assembles a finished, editable ad.
Solid vs Filestage: which is better for video ads?
An honest, side-by-side comparison of Solid and Filestage on features, pricing and fit.
Quick comparison
Solid vs Filestage: If you produce video ads, Solid replaces Filestage and the editing step before it. Filestage is a strong proofing tool for many file types, but the ads still have to be made elsewhere. In Solid, the Solid Agent builds the ads and your team and clients comment on the frame and approve in the same place, so feedback goes straight back into every version. Pick Filestage for approvals across documents, images and video made in other tools.
What is Solid?
Solid is the AI creative engine for brands and their agencies. Its agent turns a brand’s own footage, voice and best ads into finished video ads for Meta, TikTok and YouTube. Review is built in: comments on the frame, approval statuses and guest links, right where the ads are made, so feedback goes straight back to the Solid Agent. Every step stays editable: script, voice, scenes and the final cut.
What is Filestage?
Filestage is an online proofing platform. Teams upload videos, images and documents, collect visual feedback with timestamps, manage reviewer groups and approval decisions, compare versions and connect tools such as Slack, Microsoft Teams, Google Drive and Adobe apps. Reviewers do not need an account.
filestage.io ↗How Solid works
Real footage first, generation built in
Solid is not only a generator. It cuts your real footage into ads and generates what is missing.
Real footage first
Solid edits the video you already have
- Every upload cut into scenes, described and transcribed
- The agent picks your best takes and cuts them in order
- Edit by text or on a multi-track timeline
- Your creators, products and voice, not synthetic stand-ins
Generation built in
And generates what is missing
- All major video models, including Veo and Seedance
- All major image models, including Nano Banana 2, FLUX and Seedream
- Your own scenes as references, so shots match
- AI voices and brand voice cloning
The Solid Agent
The AI ad agent that does the whole job
Other tools generate assets. The Solid Agent runs the production end to end, on your own footage and brand.
Works on your real footage
It searches every scene, transcript and person in your library and cuts your best takes in order. Generation only fills the gaps.
Knows your brand
It reads your Brand Hub, video guidelines and House Rules before every script, and remembers what you teach it.
Asks before it builds
It proposes concepts and recommends one, so you steer the idea before anything is rendered.
Edits by conversation
Rewrite a line, add hooks, swap a clip or restyle captions by typing. Every hook, body and CTA combination stays editable.
Closes the review loop
It summarizes reviewer comments, works the feedback in and translates approved ads for every market in one request.
AI-native, never hardcoded
The Solid Agent does the work. You can change every step.
Solid is a fully AI-native creative engine: the Solid Agent runs the whole production in a chat. Nothing is locked. Open any step and adjust it by hand, down to the frame in the video editor.
Concept
The Solid Agent
Proposes concepts for your brief and recommends one.
You can change
Pick one, combine them or write your own.
Script
The Solid Agent
Writes the script, hooks and CTA in your brand tone.
You can change
Edit every line, hook and call to action.
Voice
The Solid Agent
Voices the script with your brand voice or an AI voice.
You can change
Swap the voice, change the pacing or use your own recording.
Scenes and cut
The Solid Agent
Picks your best takes and cuts them in order.
You can change
Swap clips and trim by text or on the multi-track timeline.
Captions and formats
The Solid Agent
Styles captions and exports every format and language.
You can change
Restyle, move and fine-tune everything before export.
Key differences
What sets Solid and Filestage apart
- Job to be done
- SolidMake, review and ship ads in one place
- FilestageProof and approve files made elsewhere
- After feedback
- SolidThe Solid Agent works comments into every version
- FilestageSomeone reworks the file in another tool
- Guest review
- SolidClient links without an account
- FilestageReviewers without an account
- File types
- SolidVideo ads
- FilestageVideo, images and documents
- Buying
- SolidSelf-serve by card via Stripe, from €299 a month
- FilestageFree plan, €199 to €329 a month
Feature by feature
Solid vs Filestage, side by side
| Feature | Filestage | |
|---|---|---|
| Real footage, cut by AI | ||
| Ads cut from your own footage | YesScene detection, A-roll and B-roll sorting, the agent cuts your takes in order | NoProofing only |
| Generation, built in | ||
| AI agent that builds the whole ad | YesSolid Agent: concept, scenes, script, voice and edit | No |
| Brand | ||
| Brand guidelines the AI follows | YesBrand Hub, drafted from your website, plus video guidelines and House Rules | Not documented |
| Review and export | ||
| Real-time collaboration and comments on the frame | YesLive project, comments pinned to the moment, @mentions, approval statuses | YesTimestamped comments on video |
| Client review links without an account | YesGuest links, reviewers can never edit | YesReviewers need no account |
| Integrations and trust | ||
| EU hosting, GDPR DPA and SSO | YesGerman company, EU hosting, SSO on Enterprise | PartialData residency in Germany and SSO on Enterprise |
| Buying | ||
| Self-serve checkout by card | YesPay by card through Stripe, invoice on Enterprise | Yes |
Based on publicly available information. “Not documented” means we could not find it in Filestage’s public material.
Honest assessment
Where each tool excels, and where it falls short
Where Solid excels
- Review and approval where the ads are made
- The Solid Agent works feedback into every version
- Guest review links on every ad
- Export every format and language after approval
- Ad production built in
Where Filestage excels
- Proofing across video, images and documents
- Reviewer groups and approval decisions
- Version compare and review reports
- Adobe, Slack and Teams integrations
- Free plan
Where Solid falls short
- Not a proofing tool for documents and print
- No reviewer groups across file types
Where Filestage falls short
- Does not make or edit ads
- Every round of feedback needs an editor elsewhere
- No brand rules or ad variants
Pricing
Solid vs Filestage pricing
Solid
Self-serve plans by brands and ads per month, pay by card through Stripe.
- Starter
- €299 / month
- 1 brand, about 15 ads a month
- Grow
- €999 / month
- Up to 3 brands, about 75 ads a month
- Scale
- €1,999 / month
- Up to 10 brands, about 150 ads a month
- Enterprise
- Custom
- 250 to 1,000+ ads a month
Filestage
Free plan, then monthly plans; Enterprise custom.
- Free
- €0
- 1 active project, 5 files a month
- Starter
- €199 / month
- Unlimited projects, version compare
- Business
- €329 / month
- Review agents, automations, API
- Enterprise
- Custom
- SSO, data residency in Germany
Monthly prices from Filestage’s pricing page; yearly plans include two months free.
Sources: Filestage pricing. Prices verified 28 October 2026; always check current prices with each provider.
The verdict
Choose Solid or Filestage?
Choose Solid if
- You review video ads, not documents
- You want feedback to turn into new versions automatically
- Clients approve ads for several brands
- You want production and review in one tool
Choose Filestage if
- You approve documents, images and video from many tools
- You need reviewer groups and approval reports
- Your files are made outside a video tool
Bottom line: Filestage is where finished files get approved. Solid is where video ads get made, reviewed and approved.
FAQs
Solid vs Filestage: common questions
Anything else? We’re happy to walk you through Solid with your own footage.
Book a demoIs Solid a Filestage alternative for video ads?
Yes. Solid has review built in, with comments on the frame, approval statuses and guest links, right where the ads are made.
How does Filestage pricing compare to Solid?
Filestage has a free plan and plans from €199 a month for proofing. Solid starts at €299 a month with production and review included.
Can I edit what the Solid Agent makes?
Yes, every step. The Solid Agent does the work in a chat, but nothing is hardcoded: you can change the concept, rewrite the script, swap the voice, replace scenes and fine-tune the final cut in the video editor, by text or on the timeline.
Keep reading
Related pages
Solid is the AI creative engine for brands and their agencies. Its agent turns a brand’s own footage, creators and best ads into finished video ads for Meta, TikTok and YouTube, and generates only the shots that are missing.
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See the difference with your own footage
See what Solid makes from your own footage. Tell us about your team and we’ll set you up.