Siren vs Blotato

Blotato gives your agent an API and MCP server to post across 9 networks. Siren gives it an MCP server that makes a brand film from your Brand DNA and posts it. See which one fits.

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: films 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 film is worth more than ten slideshows.

Where each product actually wins

Dimension	Blotato	Siren
Primary job	Post a lot, everywhere	Make the brand film, then post it
MCP server	Yes, all paid plans	Yes, Pro and Scale
Video style	Faceless AI videos, slideshows	Brand motion graphics of your product
Brand lock	You supply the look	Brand DNA on every render
Same brief, same film	Generative, varies	Rendered from code, repeatable
Networks	9	4 (X, LinkedIn, TikTok, YouTube)
Accounts per plan	20 on Starter	1 on Spark, more on Pro and Scale
Starting price	Starter $29/mo	Spark $19 (stills) · Pro $49 (films + MCP)

Choose Blotato if…

You post at volume across many accounts and networks.
Faceless videos, slideshows and AI voiceovers are the format you want.
You want the API on the cheapest plan ($29).
Brand-specific motion design is not the point.

Choose Siren if…

You run a software product and the post has to show that product.
Your colors, type, logo and voice must hold on every film and still.
You want a launch film, not a slideshow: motion graphics rendered frame by frame.
You want one brief in and a finished post out, from Claude Code, Cursor or ChatGPT.

Volume vs signature

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.

What the video is

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 film; voiceover only when you ask.

The agent path

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.

Using both

Blotato: Blotato can keep the daily feed full across many accounts.

Siren: Siren can make the films that matter. Some teams run volume in one and launches in the other.

FAQ

Do both work with Claude and Cursor?

Yes. Both have MCP servers. Siren's is on Pro ($49) and Scale; Blotato includes its API and MCP on paid plans.

Which makes better videos for a SaaS launch?

Siren, if the video needs to show your product in your brand. Blotato is built for faceless and slideshow formats at volume.

Which posts to more networks?

Blotato, with 9. Siren posts to X, LinkedIn, TikTok and YouTube.

What does a Siren film cost?

25 credits. On Pro that is about $4 a film; Pro is $49 a month for 300 credits.

Also compare

Siren docs · Siren API · OpenAPI · Siren developers · llms.txt