PowerfulAI.tools Editorial Team
Updated 20 Oct 2026
The best AI video generator depends on the job. For generating video, look at Runway, Kling, Pika or Luma; for talking-presenter videos, HeyGen, Synthesia or Fliki; and for cutting long videos into shorts, OpusClip or Klap. Most have a free option, though free plans often add a watermark or tight limits.
We checked nine tools against their official sites on 20 October 2026. Free options, paid prices and commercial-use terms are listed below only where the official site shows them.
Quick comparison
| Tool | Best for | Free option (per official site) | Paid from (per official site) |
|---|
| Runway | Video, image and audio generation and editing | Yes, 125 one-time credits | $15 per month (Standard) |
| Kling | Video and image generation | Free access to selected features | Not confirmed |
| Pika | Short clips, images and audio | Yes, Free plan | $10 per month (Starter) |
| Luma | Video and image generation | No free plan listed on pricing page | $30 per month (Plus) |
| HeyGen | Avatar videos and translation | Yes, up to 3 videos per month | $29 per month (Creator) |
| Synthesia | Business avatar videos | Yes, 500 credits per month | $29 per month (Starter) |
| Fliki | Text to video with voices | Yes, with watermark | Not shown on page |
| OpusClip | Long video to short clips | Yes, 60 credits per month | $15 per month (Starter) |
| Klap | Long video to vertical clips | One free video | Plans from $14 per month (yearly billing) |
Video generators
Runway
Runway is a cloud platform for generating and editing video, images and audio in one workspace. Its site lists a video model called Gen-4.5. It suits people who want to experiment with generated footage.
- Free option: The Free plan includes 125 one-time credits that the FAQ says do not expire, plus 5GB of storage.
- Paid pricing: Standard $15 per month ($12 per month billed annually), Pro $35 per month ($28 billed annually) and Max $95 per month ($76 billed annually). See the official pricing page.
- Commercial use: We could not confirm a commercial-use statement on the pricing page, so check Runway's terms.
Kling
Kling says on its site that you can create high-quality AI videos and images, and it also lists editing tools. It suits people who want to try a video generator without paying first.
- Free option: Kling says it offers free access to selected creation features for eligible accounts, with limited credits, models and editing options.
- Paid pricing: Kling says some advanced editing features, higher resolutions and watermark-free downloads may need a paid membership. We could not confirm plan prices, so we have left them out.
- Commercial use: Not confirmed. Read the Terms of Use before using clips in paid work.
Pika
Pika is a creative platform for video, images and audio. Its Video Studio makes clips of up to 30 seconds with multiple shots. It suits people making short social or ad clips.
- Free option: The Free plan is $0, with access to all models and no watermark. It has no monthly credits (you can only use credit packs) and no commercial licence.
- Paid pricing: Starter $10 per month and Fancy from $95 per month. A Creator plan sits between them, but its price appeared inconsistently on the page, so we have not quoted it. See the official pricing page.
- Commercial use: The page lists a commercial licence on Creator, Fancy and Enterprise, and marks it not included on Free and Starter.
Luma
Luma lists models including Ray3.2 and Ray3.14 in its generation cost tables, plus an image model called Uni-1. We did not confirm which input modes each model supports.
- Free option: The pricing page lists no free plan.
- Paid pricing: Plus $30 per month ($25 per month billed yearly), Pro $90 per month ($75 billed yearly) and Ultra $300 per month ($250 billed yearly). See the official pricing page.
- Commercial use: Plus lists commercial use as a feature, and Pro and Ultra include everything in Plus.
Avatar and presenter video
HeyGen
HeyGen makes videos from text, images or audio using AI avatars. Its video translation covers 175+ languages and dialects. It suits training, sales and marketing videos with a presenter.
- Free option: Up to 3 videos per month, each up to 1 minute, with 500+ stock avatars, 1 custom video avatar and 1 voice clone. No credit card is required.
- Paid pricing: Creator $29 per month ($24 per month with annual billing, per the FAQ), Pro from $49 per month and Business $149 per month plus $20 per extra seat. See the official pricing page.
- Commercial use: The page lists "Commercial terms" only under Enterprise, so check HeyGen's terms for other plans.
Synthesia
Synthesia is an AI video platform for business, with hundreds of stock avatars and voiceovers in 140+ languages. It suits training and internal communication videos.
- Free option: The Basic plan is $0 with 500 credits per month, 9 AI avatars and a Synthesia watermark on videos.
- Paid pricing: Starter $29 per month with 1,250 credits, and a higher plan at $89 per month with 6,000 credits. See the official pricing page.
- Commercial use: Not stated on the pricing page.
Fliki
Fliki turns a script, blog post or prompt into a video with voiceover, visuals, music and subtitles. It lists over 2,000 AI voices in more than 80 languages and can clone your voice from a short sample.
- Free option: Free forever with no credit card: 3 credits per month, exports up to 5 minutes, 720p and a Fliki watermark.
- Paid pricing: Standard and Premium plans are shown, but without amounts on the page we could read. See the official pricing page.
- Commercial use: The Free plan does not include commercial rights. Standard lists commercial rights.
Clip repurposing
OpusClip
OpusClip turns long videos into short clips. You upload a file or paste a link, and it picks moments and adds captions and reframing. It suits podcasters and creators with long recordings.
- Free option: 60 credits per month, up to 1080p, with a watermark. The page says clips are no longer exportable after 3 days.
- Paid pricing: Starter $15 per month (monthly billing only) and Pro $29 per month, or $14.50 per month billed annually ($174 per year). See the official pricing page.
- Commercial use: Not confirmed.
Klap
Klap converts long videos into short vertical clips for TikTok, Instagram Reels and YouTube Shorts, with captions, reframing and a viral-potential score.
- Free option: The site says "Try for free. No credit card required," and the FAQ says you can create one video for free.
- Paid pricing: The pricing page shows yearly-billing prices: Basic (100 clips per month) $14 per month, Pro (300 clips) $39 per month and Pro+ (1,000 clips) $94 per month. See the official pricing page.
- Commercial use: Not confirmed.
Using faces and voices responsibly
Avatar and voice tools can copy a real person's likeness, so get consent first. Only make an avatar or voice clone of yourself, or of someone who has clearly agreed in writing. Do not use anyone's face or voice to say things they did not say.
Some tools build this in. HeyGen says every custom avatar needs on-camera identity verification from the person shown, and Synthesia says every Personal Avatar needs a live on-camera consent recording. We also suggest telling viewers when a video uses an AI presenter or cloned voice.
How we chose
We picked nine tools from our directory covering text-to-video, avatar video and clip repurposing, and checked each against its own official website on 20 October 2026. We only include prices, plan names, free limits and licence terms that the official site showed. Where a site did not state something, we left it out or said so. Prices change often, so confirm on the official page before you pay.
Frequently asked questions
Is there a free AI video generator?
Yes, several. Runway gives 125 one-time credits, HeyGen allows up to 3 videos per month, Synthesia gives 500 credits per month, and OpusClip gives 60 credits per month. Free plans often add a watermark (Synthesia, Fliki and OpusClip do) or other limits.
Which tool is best for avatar or talking-head videos?
HeyGen, Synthesia and Fliki all offer AI avatars. Synthesia describes itself as an AI video platform for business, HeyGen highlights custom avatars and video translation, and Fliki also offers voiceovers in 80+ languages. Try the free plans to compare the avatar styles.
Can I use AI-generated video commercially?
It depends on the plan. Pika lists a commercial licence only from Creator upwards, Fliki's Free plan has no commercial rights, and Luma lists commercial use from Plus. Always read the terms on your plan before using video in paid work.
How do I turn a long video into short clips?
OpusClip and Klap both take a long video, by file or link, and produce short clips with captions and reframing for vertical platforms.
Do I need permission to use someone's face or voice?
Yes, you should get it. HeyGen and Synthesia require on-camera consent for custom or personal avatars. Even where a tool does not check, using a real person's likeness or voice without agreement can harm them.
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