Viral Videos 10x Faster
Script it. Generate it. Scale it — all with AI.
// Features
Everything you need to create.
Professional-grade tools powered by AI, so you can focus on telling your story.
Write scripts
in seconds
Paste a rough idea, a blog post, or just a topic — our AI transforms it into a fully-structured video script with scenes, narration, and timing.
Same face, every world
Our AI maintains deep facial consistency across every scene. Whether in a spaceship or a forest, your hero looks like the same person.
ElevenLabs voices
Ultra-realistic AI voiceovers in any tone or style.
99+ Languages
Auto-generated captions perfectly synced to audio.
// Creative Studio
Your vision, perfected.
From one-click presets to advanced AI orchestration — use your own assets or generate everything from scratch.
Cinematic Art Presets
One click to transform your video into a masterpiece. Choose from a curated library of trending visual styles including 3D renders, cinematic anime, and watercolor.
Custom Instructions
Fine-tune the soul of your style. Write system instructions to control the lighting, cinematography, and atmosphere of every scene globally.
Media Assets
Upload your own images and videos to use as references or direct assets.
Elite AI Model Selection
Cinematic Soundscape
Use our AI voices, curated BGM, or upload your own voiceovers and soundtracks for absolute control over your audio.
Brand Sovereignty
Upload your own watermark, choose placement, and control opacity. Ensure every video you generate is recognizably yours.
// Output
Any format, any length.
From short-form Reels to 30-minute long-form content — we handle it all.
Portrait & Landscape
Generate videos in 9:16 for TikTok, Reels, and Shorts — or 16:9 for YouTube and presentations. Switch formats anytime.
Up to 30 minutes
Most AI video tools max out at 60 seconds. We generate full long-form videos — up to 30 minutes — with consistent quality throughout.
// Testimonials
Loved by thousands of creators.
Join the new generation of storytellers who are redefining video production with Mostly.
Dave Nick
“Scaling my faceless history channel was a nightmare until I found Mostly. I can now batch-produce 10 videos in a weekend. The research-to-video flow is actually usable.”
Sarah Jenkins
“I've tried every AI tool out there. This is the first one where the voices don't sound like robots and the visuals actually match the vibe of my mystery niche.”
Marcus Holloway
“The script editor actually understands YouTube pacing. It knows exactly when to drop a hook. My average view duration has doubled since switching.”
Elena Rodriguez
“Being able to launch a Spanish version of my tech channel in minutes is wild. The captions and voices are perfect—not that weird translated feel.”
Liam Foster
“Consistent characters changed everything. I've built a whole brand around a 'host' that doesn't even exist, and the audience loves the personality.”
Arjun Mehta
“I used to spend thousands on editors. Native sound effects and cinematic styles mean I can ship premium content at a fraction of the cost.”
Chloe Sims
“The 9:16 output is just crisp. I just drop my viral hooks and Mostly handles the visual storytelling. My retention graphs are finally looking healthy.”
Thomas Wright
“Honestly, the best part is that it doesn't look 'AI.' It looks like custom-rendered footage. It gives my automation channels a massive edge over the competition.”
Dave Nick
“Scaling my faceless history channel was a nightmare until I found Mostly. I can now batch-produce 10 videos in a weekend. The research-to-video flow is actually usable.”
Sarah Jenkins
“I've tried every AI tool out there. This is the first one where the voices don't sound like robots and the visuals actually match the vibe of my mystery niche.”
Marcus Holloway
“The script editor actually understands YouTube pacing. It knows exactly when to drop a hook. My average view duration has doubled since switching.”
Elena Rodriguez
“Being able to launch a Spanish version of my tech channel in minutes is wild. The captions and voices are perfect—not that weird translated feel.”
Liam Foster
“Consistent characters changed everything. I've built a whole brand around a 'host' that doesn't even exist, and the audience loves the personality.”
Arjun Mehta
“I used to spend thousands on editors. Native sound effects and cinematic styles mean I can ship premium content at a fraction of the cost.”
Chloe Sims
“The 9:16 output is just crisp. I just drop my viral hooks and Mostly handles the visual storytelling. My retention graphs are finally looking healthy.”
Thomas Wright
“Honestly, the best part is that it doesn't look 'AI.' It looks like custom-rendered footage. It gives my automation channels a massive edge over the competition.”
Dave Nick
“Scaling my faceless history channel was a nightmare until I found Mostly. I can now batch-produce 10 videos in a weekend. The research-to-video flow is actually usable.”
Sarah Jenkins
“I've tried every AI tool out there. This is the first one where the voices don't sound like robots and the visuals actually match the vibe of my mystery niche.”
Marcus Holloway
“The script editor actually understands YouTube pacing. It knows exactly when to drop a hook. My average view duration has doubled since switching.”
Elena Rodriguez
“Being able to launch a Spanish version of my tech channel in minutes is wild. The captions and voices are perfect—not that weird translated feel.”
Liam Foster
“Consistent characters changed everything. I've built a whole brand around a 'host' that doesn't even exist, and the audience loves the personality.”
Arjun Mehta
“I used to spend thousands on editors. Native sound effects and cinematic styles mean I can ship premium content at a fraction of the cost.”
Chloe Sims
“The 9:16 output is just crisp. I just drop my viral hooks and Mostly handles the visual storytelling. My retention graphs are finally looking healthy.”
Thomas Wright
“Honestly, the best part is that it doesn't look 'AI.' It looks like custom-rendered footage. It gives my automation channels a massive edge over the competition.”
Dave Nick
“Scaling my faceless history channel was a nightmare until I found Mostly. I can now batch-produce 10 videos in a weekend. The research-to-video flow is actually usable.”
Sarah Jenkins
“I've tried every AI tool out there. This is the first one where the voices don't sound like robots and the visuals actually match the vibe of my mystery niche.”
Marcus Holloway
“The script editor actually understands YouTube pacing. It knows exactly when to drop a hook. My average view duration has doubled since switching.”
Elena Rodriguez
“Being able to launch a Spanish version of my tech channel in minutes is wild. The captions and voices are perfect—not that weird translated feel.”
Liam Foster
“Consistent characters changed everything. I've built a whole brand around a 'host' that doesn't even exist, and the audience loves the personality.”
Arjun Mehta
“I used to spend thousands on editors. Native sound effects and cinematic styles mean I can ship premium content at a fraction of the cost.”
Chloe Sims
“The 9:16 output is just crisp. I just drop my viral hooks and Mostly handles the visual storytelling. My retention graphs are finally looking healthy.”
Thomas Wright
“Honestly, the best part is that it doesn't look 'AI.' It looks like custom-rendered footage. It gives my automation channels a massive edge over the competition.”
Jordan Lee
“The way it handles B-roll is insane. I don't have to spend hours searching for the right clip; the AI just maps it to my script perfectly.”
Aisha Khan
“I create complex explainers. Mostly's ability to sync specific visuals with technical narration has saved my team 40+ hours a month.”
Kevin Zhang
“The cinematic lighting preset is a game changer. My horror story channel looks like a movie trailer now, and engagement is through the roof.”
Sophie Bennett
“Turning my blog posts into high-quality videos for Reels and TikTok has never been easier. The text-to-video accuracy is unmatched.”
Ben Thompson
“The scale is what's impressive. I can output a 20-minute video in the time it used to take me to just find a narrator. Quality is consistently 10/10.”
Sasha Varma
“Emotional resonance is usually where AI fails. Mostly manages to evoke genuine feeling through its score selection and visual rhythm.”
Ryan Miller
“I use this to prototype my high-end clients' projects. It gets the vision across so quickly that we skip weeks of back-and-forth.”
Maya Patel
“Helping clients build a presence on YouTube used to be a 6-figure investment. Now, we can get them up and running in a week with Mostly.”
Jordan Lee
“The way it handles B-roll is insane. I don't have to spend hours searching for the right clip; the AI just maps it to my script perfectly.”
Aisha Khan
“I create complex explainers. Mostly's ability to sync specific visuals with technical narration has saved my team 40+ hours a month.”
Kevin Zhang
“The cinematic lighting preset is a game changer. My horror story channel looks like a movie trailer now, and engagement is through the roof.”
Sophie Bennett
“Turning my blog posts into high-quality videos for Reels and TikTok has never been easier. The text-to-video accuracy is unmatched.”
Ben Thompson
“The scale is what's impressive. I can output a 20-minute video in the time it used to take me to just find a narrator. Quality is consistently 10/10.”
Sasha Varma
“Emotional resonance is usually where AI fails. Mostly manages to evoke genuine feeling through its score selection and visual rhythm.”
Ryan Miller
“I use this to prototype my high-end clients' projects. It gets the vision across so quickly that we skip weeks of back-and-forth.”
Maya Patel
“Helping clients build a presence on YouTube used to be a 6-figure investment. Now, we can get them up and running in a week with Mostly.”
Jordan Lee
“The way it handles B-roll is insane. I don't have to spend hours searching for the right clip; the AI just maps it to my script perfectly.”
Aisha Khan
“I create complex explainers. Mostly's ability to sync specific visuals with technical narration has saved my team 40+ hours a month.”
Kevin Zhang
“The cinematic lighting preset is a game changer. My horror story channel looks like a movie trailer now, and engagement is through the roof.”
Sophie Bennett
“Turning my blog posts into high-quality videos for Reels and TikTok has never been easier. The text-to-video accuracy is unmatched.”
Ben Thompson
“The scale is what's impressive. I can output a 20-minute video in the time it used to take me to just find a narrator. Quality is consistently 10/10.”
Sasha Varma
“Emotional resonance is usually where AI fails. Mostly manages to evoke genuine feeling through its score selection and visual rhythm.”
Ryan Miller
“I use this to prototype my high-end clients' projects. It gets the vision across so quickly that we skip weeks of back-and-forth.”
Maya Patel
“Helping clients build a presence on YouTube used to be a 6-figure investment. Now, we can get them up and running in a week with Mostly.”
Jordan Lee
“The way it handles B-roll is insane. I don't have to spend hours searching for the right clip; the AI just maps it to my script perfectly.”
Aisha Khan
“I create complex explainers. Mostly's ability to sync specific visuals with technical narration has saved my team 40+ hours a month.”
Kevin Zhang
“The cinematic lighting preset is a game changer. My horror story channel looks like a movie trailer now, and engagement is through the roof.”
Sophie Bennett
“Turning my blog posts into high-quality videos for Reels and TikTok has never been easier. The text-to-video accuracy is unmatched.”
Ben Thompson
“The scale is what's impressive. I can output a 20-minute video in the time it used to take me to just find a narrator. Quality is consistently 10/10.”
Sasha Varma
“Emotional resonance is usually where AI fails. Mostly manages to evoke genuine feeling through its score selection and visual rhythm.”
Ryan Miller
“I use this to prototype my high-end clients' projects. It gets the vision across so quickly that we skip weeks of back-and-forth.”
Maya Patel
“Helping clients build a presence on YouTube used to be a 6-figure investment. Now, we can get them up and running in a week with Mostly.”
// Pricing
Simple, transparent plans.
Choose the plan that's right for your creative journey. All plans include access to our core AI video engine.
// Usage & Estimates
Predictable costs for infinite creativity.
Understand how credits translate into content. Our transparent pricing ensures you always know what you're creating.
The Unit: 1 Scene
A scene is the building block of your video. Each scene includes:
Project Estimates
Cost Breakdown
OR ~2-4 Long-form documentaries
Full motion scenes for every script line
// FAQ
Got any questions?
Everything you need to know about our plans, credits, and how we help you build better videos.