Sonilo

Sonilo is a video-aware music and sound-effects generator with translation and re-voicing tools. It is best suited to video creators and developers who need audio shaped around a clip’s visuals, but its credit costs and default data-use policy call for care. For sensitive projects or long videos, check the limits and terms before committing.

Overview

Upload an MP4 or MOV, or describe the audio you want with text. Sonilo analyzes visuals rather than the original soundtrack, so you can keep, adjust, replace, or layer the video’s existing audio. It generates several variations by default and lets you steer style with an optional prompt.

Video-aware generation costs 18 credits per output second for both music and sound effects, compared with 5 for text-to-music and 4 for text-to-sound-effects. A 15-second and 200-credit minimum applies, making text generation the more economical route when matching a video’s pacing is not essential. The maximum clip length is 180 seconds.

Key features

Sonilo goes beyond soundtracks: it can translate speech, re-voice videos, re-render lip-sync, and accept SRT or VTT subtitles. Pro includes 800 seconds of video translation per language; Premium raises that to 2,000 seconds per language. The API covers video- and text-based music and sound-effects generation, audio ducking, task polling, and account usage.

Plugins are available for Adobe Premiere Pro, Unity, Godot, Epic Games Fab, Roblox Studio, and Defold. That breadth suits creators working in those environments, while the API gives developers programmatic access to the same core generation modes.

Sonilo says its models use licensed music datasets, including content authorized through Shutterstock. Its privacy policy also permits uploaded videos, prompts, outputs, and related data to be used for AI training and product improvement by default, without a separate opt-out. It prohibits uploading minors’ data, biometric or health information, government IDs, confidential third-party business materials, and other specified sensitive data unless authorized in writing. Those restrictions and the default training use make it a poor fit for sensitive or confidential work.

Pricing

The free plan costs nothing and includes 2,000 credits every two weeks, preview-quality exports, videos up to 3 minutes and 500 MB, and one task. Its stated allowances are 7 × 15-second video soundtracks, 6 minutes of text-to-music, or 8 minutes of text-to-sound-effects. Free use is personal and non-commercial, so it is for evaluation rather than commercial delivery.

Pro costs $11.99 a month, billed yearly as $143.88 (shown against $240). It provides 40,000 credits per month, videos up to 8 minutes and 1.5 GB, unlimited tasks and free downloads, and 800 seconds of translation per language. Its stated generation equivalents are 148 × 15-second video soundtracks, 133 minutes of text-to-music, or 166 minutes of text-to-sound-effects. Commercial use is permitted, making Pro the practical starting point for individual commercial creators who can work within its upload and translation caps.

Premium costs $23.99 a month, billed yearly as $287.88 (shown against $480). It raises the monthly allowance to 100,000 credits, video limits to 30 minutes and 3 GB, and translation to 2,000 seconds per language; tasks and free downloads remain unlimited. Its stated equivalents are 370 × 15-second video soundtracks, 333 minutes of text-to-music, or 416 minutes of text-to-sound-effects. Choose it when longer uploads or greater translation capacity justify the higher annual commitment.

Enterprise has custom pricing, volume credit rates, no minimum charge, 20 seats, custom credit and upload limits, a dedicated dashboard, an account manager, and priority support. It is aimed at teams needing shared access and tailored limits. The paid plans are listed as starting from $4.99/mo (annual), but the Pro and Premium prices above are the stated plan prices. A free trial is available.

Platforms

Sonilo is available on Android, iOS, web, and API. Its editor plugins extend integration to Adobe Premiere Pro, Unity, Godot, Epic Games Fab, Roblox Studio, and Defold.

Who it's for

Sonilo is a strong fit for video editors who want generated audio to track visual pacing and scene changes, and for developers who want generation and audio-ducking capabilities through an API. Translation and re-voicing broaden its use for localized video. It is less suitable for personal users seeking commercial rights on the free tier, anyone needing an unrestricted long-clip allowance, or teams handling sensitive footage and confidential material.

Pros and cons

• Pros: Video-aware music and effects generation can follow a clip’s pacing and scenes while leaving original audio available.
• Pros: Translation, re-voicing, lip-sync re-rendering, editor plugins, and API functions serve workflows beyond standalone sound generation.
• Pros: Paid tiers include commercial-use rights, with Enterprise offering 20 seats and tailored limits.
• Cons: Video generation costs 18 credits per second and has a 15-second, 200-credit minimum, so short outputs are not proportionally cheap.
• Cons: Free exports are preview quality and non-commercial; even paid plans cap translation and upload length.
• Cons: Default use of uploads and outputs for model improvement, alongside strict limits on sensitive data, rules it out for some confidential projects.

Alternatives

For a wider category comparison, see AI Sound Effect Generators.

• Mirelo is another freemium option, with web, macOS, Windows, and API platforms; its Creator plan costs €20 a month for 24,000 monthly credits and 20 projects.
• SeedAudio is a web-based freemium option with a free trial and a free first generation without sign-up, limited to 300 characters; signed-up users receive 20 free credits.
• SFX Studio offers a free plan with signup credits, no credit card, and no watermark; its Pro plan costs $9.50 a month.
• Noiz AI is a free option for iOS and web.
• Creen is a freemium web option.
• Pixazo AI SFX Generator is a freemium web and API option; its free plan gives 100 bonus credits during a 7-day trial, with credits lapsing afterward and no API access or commercial rights during the trial.
• AudioGen is free and self-hosted for Linux or API use; local inference requires a GPU with at least 16 GB of memory.
• Autunes is a freemium web option with a free plan that provides 25 signup credits, then 20 daily credits after those run out, and up to 3 minutes of audio.

Verdict

Choose Sonilo if you need video-aware sound generation alongside translation or re-voicing, and can accept its per-second credit costs and data-use terms. Its free plan is useful for non-commercial evaluation, while commercial creators should budget for a paid tier. Look elsewhere for sensitive footage or when you need predictable low-cost generation of short clips.