Overview

Mirelo is an AI sound-effects platform for video creators who want effects generated in sync with picture, as well as developers building audio into products or pipelines. Its combination of video analysis, prompt-based creation and editing makes it a strong fit for shaping sound within a video workflow; the free tier is better for short trials than ongoing projects.

Mirelo Studio brings generation and editing into a browser workspace, while plugins and developer tools extend the product into other workflows. Its main trade-off is the cost of paid plans and the free plan’s brief project retention and watermarked exports.

Key features

Frame-timed video sound: Mirelo SFX analyzes scenes and actions to generate effects timed to the picture. This suits creators who need effects aligned with a clip rather than a separate, manually synchronized sound pass.
Text-to-sound: Text prompts can produce effects, including imagined or off-screen sounds. That gives creators a way to fill in audio the video itself cannot show.
Editing beyond generation: Users can extend clips, create seamless ambient loops and repair glitches while preserving the rest of a take. These tools make Mirelo more useful when generated audio needs refinement, not just a first-pass result. Maximum clip length is 60 seconds.
Browser workspace and integrations: Mirelo Studio combines video-to-sound, text-to-SFX and iterative editing. Plugins for Adobe Premiere Pro, DaVinci Resolve and Roblox Studio, plus an API and MCP connection for compatible clients such as Claude, Cursor and ChatGPT, offer several routes into a creator or developer workflow.
Security and support: Mirelo AI GmbH says its information security management system is certified to ISO/IEC 27001:2022 through July 13, 2029. Customer data is protected in transit with TLS and encrypted at rest, and production access follows least privilege. Email support covers Studio, billing and API issues, with a stated response time of two business days.

Pricing

Mirelo uses a freemium model, with monthly billing through Stripe. After creating an account, users can upgrade, downgrade or cancel in Studio. Paid plans use the latest Mirelo audio models and allow commercial use; extra credits cost more, so the monthly quota matters for heavy use.

Plan	Price and allowance	Best fit and trade-off
Free	0 €/month; 5.000 credits / month; 3 projects	A trial option with the latest models, but projects are deleted after one week and exports carry a watermark. That makes it unsuitable for work that needs durable projects or clean exports.
Creator	20 €/month; 24.000 credits / month; 20 projects; extra credits at 0,90 € / 1000 credits	The entry paid tier for individual creators who need more room than the free plan. It still caps projects at 20.
Studio	99 €/month; 120.000 credits / month; unlimited projects; extra credits at 0,90 € / 1000 credits	For heavier recurring use or many concurrent projects; the price is a substantial jump over Creator.
Scale	299 €/month; 420.000 credits / month; unlimited projects; extra credits at 0,80 € / 1000 credits	For high-volume work, with a lower extra-credit rate than Studio.
Business	999 €/month; 1.440.000 credits / month; unlimited projects; extra credits at 0,75 € / 1000 credits	For very high monthly volume; the cost is difficult to justify for smaller workloads.
Enterprise	Custom pricing; custom monthly credits and volume pricing; unlimited projects	For organizations needing API access and dedicated support, with terms set through custom pricing.

All paid plans include unlimited access to the latest models, but Creator is the only paid tier with a project cap. The larger plans increase the monthly allowance and reduce the extra-credit rate; choose them only if the higher volume matches your workload.

Platforms

Mirelo is available on web, macOS and Windows, with API access for integrations. Its plugins and MCP connection provide additional workflow options, though users who do not work in a supported editor or compatible MCP client may get less benefit from them.

Who it's for

Mirelo is best suited to video makers who want effects timed to footage and the ability to refine them in the same workspace. The integrations make it relevant to teams working in Premiere Pro, DaVinci Resolve or Roblox Studio, and to developers using the API. It is less suited to users who only need a small number of occasional effects and want to keep projects on the free plan, since those projects disappear after a week and exports are watermarked.

Pros and cons

Pro: Video analysis generates frame-timed effects, directly addressing the work of aligning sound to picture.
Pro: Clip extension, ambient loops and glitch repair support iterative editing instead of limiting users to one-shot generation.
Pro: Plugins, API access and MCP support give creators and developers multiple integration paths.
Con: Free projects are limited to three and deleted after one week, while exports are watermarked; the plan is a poor fit for retaining or delivering finished work.
Con: The paid tiers rise from 20 €/month to 999 €/month, so higher credit allowances come with a steep commitment.
Con: Monthly credits and project caps mean buyers need to match their workload to a tier or pay for extra credits.

Alternatives

Sonilo is another freemium option, with a free allowance of 2,000 credits every two weeks and quotas for video soundtracks, text-to-music and text-to-sound effects; consider it if those separate free quotas suit your needs.

Async offers a free tier with 10 lifetime AI credits, one hour of media upload to AI chat and exports up to 720p; it may suit someone seeking a small, limited free starting point.

AudioGen is a free, self-hosted option with a pretrained medium model, but local inference requires a GPU with at least 16 GB memory. Choose it if local inference is a priority and that hardware is available.

HueFold is a freemium option with a free plan and free trial.

Morphic offers a forever-free web plan capped at 20 credits and one user, with limited models and workflows; it may fit someone who can work within those constraints.

Pixazo AI SFX Generator has a free tier with 100 bonus credits during a seven-day trial, but credits lapse afterward and commercial rights and API access are excluded during the trial. It may suit a brief, non-commercial evaluation.

SeedAudio offers a first generation without sign-up, 20 free credits on sign-up and generations up to 60 seconds; consider it for a light initial trial.

SFX Studio has a free plan with signup credits, no credit card and no watermark, plus a 9.50 USD per month Pro tier with higher credits and priority processing. Its free exports may be a better fit for someone who wants to avoid a watermark.

For a broader comparison, see AI Sound Effect Generators or AI Audio-to-MIDI Software.

Verdict

Choose Mirelo if you make video and want generated effects synced to footage, then refined through editing tools or integrated into a production workflow. Its clearest advantage is the combination of frame-timed generation and practical editing across browser, plugins and developer tools. Look elsewhere if you need to retain projects on a free plan, avoid watermarked exports or keep monthly costs low.

	Mirelo	SoundFactory
Free plan	Yes	Yes
Free trial	No	No
Paid from	€20/mo	Free
Open source	No	No
Platforms	api, macOS, Web, Windows	Web
Free plan	Yes	Yes
Text-to-sound	Yes	Yes
Maximum clip length	60 s	—
Download formats	other	wav + mp3
Commercial use	included	unclear
API access	Yes	—

Mirelo vs SoundFactory

Mirelo

SoundFactory