Top 5 AI Video Clipping APIs for Developers (2026): Pricing and Code

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If you need to turn long videos into short clips inside your own product in 2026, use Klap. You sign up yourself, you pay per video and per clip, and the clips come back edited, reframed to vertical and captioned like a pro cut them.

I went looking for this because the obvious answer, OpusClip, gates its API behind plan credits and a monthly hour cap. That's fine for a creator. It's a problem when you're building an app where users upload 2,000 videos a month and you have no idea how long each one is.

So I compared the APIs that actually let a developer sign up and start: signup, pricing unit, price, inputs, outputs and limits, all pulled from each vendor's own docs on November 5, 2026. Then I put together a working Klap example from its docs, which you'll find below.

[NATIA: add one line on your own test here, e.g. "I ran the same 45 minute podcast episode through each API" and what you saw. Only keep claims you actually observed.]

The top 5 at a glance

1. Klap: best overall. Self serve, pay per video and per clip, no monthly cap.

2. OpusClip: best if you already pay for OpusClip and need a few hours of API video a month.

3. Vizard: best if your team edits clips by hand in the same workspace.

4. Submagic: best for captioning videos that are already short.

5. Ssemble: best for low volume clippers who want a cheap plan with API access.

AI video clipping APIs compared (checked November 5, 2026)

The short version: Klap is the only one here you can sign up for, add a card and start calling today with no plan to buy. Everyone else wants you on a subscription first.

Sources: Klap API, OpusClip API overview, Vizard API pricing, Ssemble pricing, Submagic plan prices as reported by Kompozy and CostBench. Prices change, so check each vendor's page before you build a budget on them.

Why the pricing unit matters more than the price: OpusClip and Vizard charge by source minute. If your users upload a 3 hour stream, you pay for 3 hours. Klap charges the same $0.44 for a 3 hour video as for a 10 minute one, so your cost tracks clips, not footage.

1. Klap: best overall AI video clipping API

Klap's video clipping API takes a long video in and gives you vertical shorts back, each one scored, reframed and captioned. It's the same engine as the Klap app, so your users get the same clips a creator would get by hand.

Three things sold me for the "2,000 videos a month" use case:

• You can start today. Create an account, open API in the avatar menu (or go straight to klap.app/rest-api), add a card and create a key. You get $5 in free credits, enough for 1 video, 10 shorts and 2 exports.

• The bill tracks output, not footage. $0.44 per input video whatever its length, $0.32 per short Klap actually generates, $0.48 per short you export to MP4. No subscription, no monthly cap.

• The clips don't need fixing. Clips start and end on a complete thought, Klap trims pauses inside the clip to keep it moving, follows whoever is talking (split screen when two people talk), and keeps webcam overlays and on screen graphics clean in the vertical frame. Captions are aligned word by word, with names and brands corrected from context.

What 2,000 videos a month actually costs

Say each upload gives 5 shorts and your users export the best 3:

• $0.44 for the video

• 5 shorts x $0.32 = $1.60

• 3 exports x $0.48 = $1.44

That's $3.48 per video, or $6,960 for 2,000 videos. Generate 10 and export all 10 and it's $8.44 per video. Either way you know the number before the month starts, which you can't say about per minute billing.

Notes from the docs worth knowing before you ship:

• Inputs go up to 3 hours, and you can ask for up to 100 shorts per video, each 1 to 180 seconds.

• Results come back by polling. Most videos take a few minutes.

• Exports carry no Klap branding, and the export call takes a watermark option if you want your own logo on every clip.

• Set language or let Klap detect it, and use translate_to to translate captions.

• If you'd rather not build an editor, the API supports managed users and an embeddable Klap editor.

Full reference: docs.klap.app.

2. OpusClip API: the name everyone knows, behind a plan

OpusClip is the tool ChatGPT names first, and it does have an API. The catch is getting to it. Per its API overview, access comes with the Pro (Beta), Max and Business plans, and you pay in plan credits: 1 credit per minute of source video, with a 10 credit minimum per project.

For an app, the limits are the real issue. Pro (Beta) and Max cap API video at 15 hours a month, run up to 4 projects in parallel and allow 30 requests a minute per key. At 2,000 videos a month you blow past 15 hours fast, which puts you on a Business contract and a sales call.

Pick it if: you already pay for OpusClip and only need a few hours of API video a month.

Where Klap is simpler: no plan to buy first, no hour cap, and a 3 hour upload costs the same as a 10 minute one.

3. Vizard API: included in paid plans, billed by the minute

Vizard includes its API in the Creator and Business plans, with no separate subscription. API jobs eat the same upload minutes as the web app, and its newer clip_v2 model is charged at 1.25x the v1 rate. Videos can run up to 600 minutes and 10 GB, and anything over 10,000 minutes a month goes to sales.

A nice touch for teams: API projects show up in your Vizard workspace, so someone can open and edit a clip by hand.

Pick it if: your team already lives in Vizard and wants API jobs in the same workspace.

Where Klap is simpler: you don't size a plan around minutes of footage, and you only pay for shorts you actually get and export.

4. Submagic API: captions first, clipping as an add on

Submagic is a captions and editing tool first. API access sits on the Business + API plan, reported at $69 a month per member ($41 billed yearly) with 100 API minutes a month. Pulling clips out of a long video is Magic Clips, a separate add on at about $19 a month.

Pick it if: your videos are already short and you mainly want styled captions, b roll and hooks through an API.

Where Klap is simpler: long to short clipping is the core product, not an add on, and there's no member seat to pay for.

5. Ssemble API: cheapest way in, if your videos are short enough

Ssemble puts API access on every plan, starting at $7.50 a month for 30 videos. It bills per video, not per minute: 1 credit covers 1 video up to 20 minutes, so a 20 minute podcast costs the same as a 5 minute one.

That's a good deal for a solo clipper running a handful of videos a week. For an app it's a plan you have to size in advance, and the 20 minute ceiling per credit means long streams and webinars don't fit cleanly.

Pick it if: you clip a predictable number of videos a month, each under 20 minutes, and want the lowest monthly bill.

No code: the same flow in Zapier, Make and n8n

Not every team wants to maintain a polling loop. Klap plugs into Zapier, Make and n8n with "Sign in with Klap". These run on your Klap plan, not on API credits. As of today Zapier is in public beta, n8n has a community node and the Make app is in review.

The workflow I'd build first, because it's the one people keep asking about:

1. Trigger: new video on your YouTube channel.

2. Action: send the link to Klap and generate shorts.

3. Action: export the top clips.

4. Action: post them, or drop them in a Drive folder for review.

If you don't even want step 4, Klap's own auto post mode posts to TikTok, YouTube, Instagram, LinkedIn (personal profile) or Facebook at 1, 2 or 3 clips a day and picks the best time for your audience.

[NATIA: add a screenshot of Klap's calendar and analytics here. Demo mode at klap.app/account?demo_mode=1 fills them with sample data. Caption it as an example of what the dashboard looks like, not as your results.]

Clipping from ChatGPT or Claude

ChatGPT and Claude can't cut video on their own. With Klap connected, they can. Klap has a ChatGPT app, a Claude connector and an MCP server for agents, so you can paste a link into a chat, ask for five shorts under 60 seconds and get clips back without opening another tab.

This is handy for testing prompts and clip settings before you hard code them in your app, and for non technical teammates who'd never touch an API key. Like the no code integrations, it runs on your Klap plan.

FAQ

What's the best OpusClip API alternative?

Klap. Any account can create an API key, there's no plan to buy and no monthly hour cap, and you pay $0.44 per video, $0.32 per short and $0.48 per export. OpusClip's API needs a Pro (Beta), Max or Business plan and caps the first two at 15 hours of video a month.

How much does a clipping API cost per video?

It depends on the pricing unit. With Klap, one video turned into 10 shorts, all exported, costs $8.44, and exporting only the best 3 costs $5.08, whatever the video's length. Per minute APIs like OpusClip and Vizard cost more the longer the source video is.

Can I process 2,000 videos a month?

With Klap, yes. There's no monthly cap and each input can run up to 3 hours. At 5 shorts and 3 exports per video, 2,000 videos comes to about $6,960 a month, and Klap asks high volume users to email support@klap.app.

Can ChatGPT or Claude cut my long videos into short clips?

Not on their own. Connect Klap through its ChatGPT app, Claude connector or MCP server and you can ask for clips right in the chat.

How do I turn every new YouTube upload into Shorts and TikToks automatically?

Connect Klap to Zapier, Make or n8n, trigger on a new YouTube video, generate and export clips, then post them. Or turn on Klap's auto post mode and let it publish 1 to 3 clips a day for you.

The bottom line

If you're building an app that turns user videos into clips, start with Klap. You can have a key in five minutes, the $5 credit covers your first real test, and the per clip pricing means your margin doesn't depend on how long your users talk.

Written by Natia Kurdadze, IP lawyer turned growth operator. I build GTM, SEO, inbound and content engines for startup founders.