Runway vs Pika: Which AI Video Generator Is Cheaper?

Side by side: what Runway and Pika give you for free, what they charge to start, and whether they stamp a watermark. Sisif sits in the third column at $1 a clip.

Runway starts at $12/mo and Pika at $8/mo. On the free tier, Runway watermarks free exports and Pika watermarks free exports. Both are closed models you rent by the credit. Sisif runs an open-weights video model, charges $1 a clip, and never adds a watermark.

A short prompt is one 5 s clip at $1. A timeline is a story, $1 per 5 s, priced before you pay.

Compare

$1 a clipNo watermarkNo subscriptionCredits never expire

Sisif · terms
sisif.ai · rendered on our own GPUs
Watermarknone, ever
Credit expirynever
Failed rendercredits returned
Commercial useincluded
Subscriptionnone required
Modelopen weights, our GPUs
Agentspay per clip over the API

1 × clip, 5 s, 540x960$1
Total$1
Same terms on clips, and on every monthly plan.

Runway vs Pika vs Sisif

Feature Runway Pika Sisif
Free tier 125 one-time credits (no refresh) ~80 credits/mo, 480p None. $1 a clip, bought one at a time
Watermark on free output Yes Yes None
Entry paid plan $12/mo $8/mo $10/month (100 credits)
Cost per second $0.25-0.50 n/a 2.5 to 6 credits per second
Model weights Closed Closed Open weights

Verdict

Pika is the cheaper way in at $8/mo, but its free tier is 480p and watermarked, and watermark-free download starts on Pika Pro at $28/mo. Runway's free credits do not refresh and its free exports carry a watermark too. For short social clips Sisif skips the subscription: $1 a clip, paid once, and no watermark on any export.

How it works

01

Describe the clip

Write what should happen in 5 seconds: the subject, the style, the camera move. The prompt stays attached to the render, so you can see what made each clip.

02

We render it

An open-weights model on GPUs we operate turns the prompt into a 540x960 portrait clip, most of the time in 2-5 minutes. A failed render returns the credits.

03

Download and publish

One MP4, no watermark, yours to publish anywhere, commercial use included. Pay $1 for the clip; nothing recurring.

Frequently asked questions

Which is cheaper, Runway or Pika?

Runway's entry plan is $12/mo and Pika's is $8/mo, both monthly. Sisif sells clips one at a time instead: $1 a clip, no subscription, with monthly plans from $10/month.

Do Runway and Pika watermark free videos?

Runway watermarks free exports. Pika watermarks free exports. Sisif never adds a watermark, on any plan.

Is there a cheaper alternative to Runway and Pika?

Sisif runs an open-weights video model and charges per clip: $1 per clip, with no subscription. Describe the clip, render it in portrait, download an MP4 with no watermark.

Explore more

Recent renders, with the prompt that made each one 5 s · 540x960 portrait
01Uncover the history of Sorrento as an ancient Roman resort on a half day walking tour of the city centre.
02“Champagne Sandbar Soirée” – Three girlfriends clink flutes on a hidden sandbar; one splashes sparkling water at the camera while the others strike carefree, swimsuit-model poses.
03“Golden-Hour Hammock Stories” – A newlywed bride lounges in a palm-strung hammock, reading a love note aloud while her partner films close-ups of her sun-kissed skin and relaxed smile.
04Sorrento Coast, drone shot, travel, holiday video, sunny day
05beach, sexy, holiday, honeymoon, chill
06A barefoot couple wrapped in a linen sheet, standing on a balcony overlooking turquoise waves at sunrise

Ready to try the no-watermark one?

Every clip is $1. No watermark, no subscription, and the credits you buy never expire.