Compare
Siren makes launch videos and ad creatives in your brand from one prompt, and posts them to X, LinkedIn and YouTube (TikTok with your OK on each post). One video is $9.99; plans are Spark $19, Pro $49 and Scale $149 a month, and Siren works inside Claude, Cursor and ChatGPT over MCP. Updated 28 Oct 2026.
Both let an AI agent post for you over MCP. Blotato is built for volume: faceless videos, slideshows and posts across 9 networks. Siren is built for a software brand: videos of your product in your colors, type and logo, rendered the same way every time.
The cut
Pick Blotato when you want your agent pushing a lot of posts to a lot of accounts. Pick Siren when every post has to look like your product and your company, and a video is worth more than ten slideshows.
At a glance
Edge column is editorial judgment for a campaign team, not a feature scoreboard. Ties mean different jobs, not a coin flip.
| Dimension | Blotato | Siren | Edge |
|---|---|---|---|
| Primary job | Post a lot, everywhere | Make the brand video, then post it | Tie |
| MCP server | Yes, all paid plans | Yes, every plan | Tie |
| Video style | Faceless AI videos, slideshows | Brand motion graphics of your product | Siren |
| Brand lock | You supply the look | Brand DNA on every render | Siren |
| Same prompt, same video | Generative, varies | Rendered from code, repeatable | Siren |
| Networks | 9 | 4 (X, LinkedIn, YouTube, TikTok (your OK per post)) | Them |
| Accounts per plan | 20 on Starter | 1 on Spark, more on Pro and Scale | Them |
| Starting price | Starter $29/mo | $9.99 for one video, or Spark $19 a month (videos, MCP and API on every plan) | Them |
Honest split
Premium products do not pretend to do everything. Neither do we.
Choose Blotato if…
Choose Siren if…
Mechanism
Blotato
Blotato is infrastructure for posting at scale. It is at its best when the plan is many posts on many accounts.
Siren
Siren is at its best when one post has to carry the brand: a launch, a feature, a changelog. It looks like your company, not like a template.
Blotato
Faceless AI videos and slideshows with AI voices and captions. Fast to make, similar across brands.
Siren
Motion graphics written in code and rendered frame by frame with your Brand DNA. Music and sound come with every video; voiceover only when you ask.
Blotato
One API and MCP server for 9 platforms. Your agent writes and schedules.
Siren
One MCP server that makes the asset and posts it. Your agent says post this; Siren already knows your brand.
Blotato
Blotato can keep the daily feed full across many accounts.
Siren
Siren can make the videos that matter. Some teams run volume in one and launches in the other.
FAQ
Yes. Both have MCP servers. Siren's is on every plan, Spark included; Blotato includes its API and MCP on paid plans.
Siren, if the video needs to show your product in your brand. Blotato is built for faceless and slideshow formats at volume.
Blotato, with 9. Siren posts to X, LinkedIn, YouTube and TikTok (with your OK on each post).
25 credits. On Pro that is about $4 a video; Pro is $49 a month for 300 credits. A platinum video, the studio-grade kind for a big launch, is 50.
Also compare
a thousand voices, one signature
Brand DNA once. Videos of your product from one line.
