Skip to content
Updated for 2026

Most AI video generators ship silent clips — you add audio in a separate tool. MakeThisVid bakes audio into every render automatically: 6-second 720p or 8-second 1080p video with synthesized sound, no separate step, no upgrade tier. Plans from $19.99/mo for 10 credits or $2.99 for a one-time pack. For longer cinematic single shots with audio added separately, Runway. For avatar-with-voice presenters, Synthesia or HeyGen.

Best AI Video Generators with Audio

By MakeThisVid Editorial Updated Methodology
Real output — prompt: "Coffee steaming in a ceramic mug on a wooden desk, ambient morning light, soft piano note, still life cinematic"

Audio is the missing piece in most AI-generated video. The big-name scene generators — Runway, Pika, Kling, Luma — ship silent clips and expect you to add audio in a separate step. Avatar tools include voice but make talking-head content, not scenes. MakeThisVid sits in the middle: scene generation with audio baked in automatically. Below is the honest comparison of which AI video generators include audio in 2026, and which to pick depending on what you ship.

Key facts

MTV starting $19.99/mo 10 credits — ~$2.00 per 720p clip with audio
MTV cheapest $1.33/clip Pro plan, 720p, 60 credits
Audio Always on Built-in on every render
Clip length 6-8s Per render; stitch for longer
Commercial use Licensed Every plan + $2.99 starter
Watermark Never No tier, no surface

How to Use MakeThisVid

From prompt to downloadable MP4, ready to deploy.

  1. Decide if you need audio inside the clip

    If the output goes to a paid social ad, a YouTube bumper, or a quick social cut, native audio shortens the pipeline by one tool and one step. If the output goes into a longer edit where you are layering music or voice-over anyway, native audio matters less. MakeThisVid optimizes for the first case.

  2. Compare cost per clip with audio

    A tool that costs $10/mo but ships silent clips is not actually cheaper than a $20/mo tool with audio included — you still pay for the audio step somewhere. MakeThisVid Pro lands at ~$1.33 per 720p clip with audio. Divide credits by monthly fee on any tool before judging cost.

  3. Confirm commercial use covers audio too

    Some tools license the visual but not the audio component. MakeThisVid licenses the full output — video and audio — under one commercial use grant on every plan and the $2.99 starter pack. No separate audio licensing.

  4. Test on your subject matter

    Audio quality varies by subject. Action-heavy prompts (impact, splash, motion) get clear audio cues; static or atmospheric prompts get ambient sound. Run a real prompt through the $2.99 starter pack on MakeThisVid before subscribing — one full 720p clip with audio, no further commitment; use the $4.99 Starter HD Pack for 1080p.

Who Uses MakeThisVid for This

1. MakeThisVid — best for short-form ad clips with audio baked in

Purpose-built for 6-second 720p or 8-second 1080p ad video with synthesized audio on every render. Plans run $19.99/mo Lite (10 credits), $49.99/mo Standard (30 credits), $79.99/mo Pro (60 credits), with one-time packs from $2.99. Pro lands at ~$1.33 per 720p clip — the lowest cost-per-clip with audio in this category. Commercial use licensed on every plan and pack.

2. Synthesia — best for avatar presenter video with voice

Synthesizes a presenter avatar with multilingual voice — the right tool when you need a talking head delivering a script, not a scene. Starter $29/mo (120 min/yr), Creator $89/mo. Verdict: avatar-first, not scene-first.

3. HeyGen — best for multilingual avatar with strong lip-sync

HeyGen rivals Synthesia in the avatar category with stronger lip-sync and voice cloning. Free tier (3 min/mo) carries a watermark; Creator from $24/mo unlocks clean output. Verdict: pick over Synthesia if avatar style matches your brand better.

4. Fliki — best for text-to-video with stock footage + voice

Fliki assembles stock footage with synthesized voice in 80+ languages. Output is stock-driven, not synthesized scenes — useful for blog repurposing, weak for original ad creative. Standard $28/mo, Premium $66/mo. Verdict: blog-to-video with voice.

5. InVideo AI — best for long stock-assembly explainers with voice-over

Takes a brief and assembles stock clips with voice-over and music. Output is long-form (1-5 minutes), not short ad scenes. Plus $20/mo, Max $48/mo. Verdict: long-form stock-assembly, not synthesized scenes.

6. Runway / Pika / Kling / Luma — silent generators, add audio separately

These produce high-fidelity 5-to-10-second cinematic clips, silent by default. The right tools when you need one cinematic single shot and you are layering audio in a separate editor anyway. Subscriptions from ~$10-$15/mo. Verdict: cinematic visuals, audio is your responsibility.

Frequently Asked Questions

MakeThisVid bakes audio into every render automatically — no separate step or upgrade. Synthesia, HeyGen, and Fliki include voice but they are avatar or stock-assembly tools, not scene generators. Runway, Pika, Kling, and Luma output silent clips by default.
On action-heavy prompts — impact, splash, motion, transformation — synthesized audio is clearly diegetic and matches the visual. On atmospheric prompts (a quiet kitchen, a calm interior), the audio is ambient and subtle. It will not replace a custom-mixed music track on a hero brand video, but it shortens the pipeline by one tool for paid-social and short-form work.
Yes. The MP4 output works in any standard editor — DaVinci Resolve, Premiere, CapCut, the Meta Ads Manager media tools. Generate the visual with native audio, then strip and replace with custom audio in your editor if needed.
Native-audio generators come out cheaper for short-form work because the audio step (find, license, mix, render) costs time even when the second tool is free. For longer pieces with custom music, the cost difference disappears — you are paying for the music anyway.
Most no-cost tiers ship silent or watermarked. MakeThisVid has no no-cost option — the lowest entry is the $2.99 one-time pack, which produces one 720p clip with audio, no watermark, and commercial use rights. The cheapest 1080p entry is the $4.99 Starter HD Pack. HeyGen's no-cost tier includes voice but watermarks the output.
On MakeThisVid, yes — every plan and credit pack licenses the full output including audio under one commercial use grant. Always verify on other tools, especially for synthesized voice — some platforms license the visual separately from the audio.
MakeThisVid renders 6-second 720p or 8-second 1080p clips per generation. For longer pieces, generate multiple clips and stitch them together — this is the standard workflow for ad sequences. Sora supports up to ~20 seconds in a single render; Runway up to 10.

Try the AI video generator with audio always on

Prompt or product photo. 45 seconds to a 1080p MP4 with audio baked in — no watermark, commercial use on every plan.

Try MakeThisVid