Overview

Mirelo is a video-aware sound-effects generator with editing tools and routes into creative software and developer workflows. It suits video teams that want to generate and refine synchronized effects without making a separate sound-design step the center of the process. Its range of integrations is a strength, but the free plan’s project cap, short retention and export watermark make it a trial tier rather than a durable workspace.

Key features

Video-synced generation: Mirelo SFX analyzes scenes and actions to create frame-timed effects. That is most useful when a project needs effects placed in relation to the picture, rather than a library of sounds to search and sync manually.
Prompt-based effects: Text prompts can generate off-screen or imaginative sounds as well as effects tied to visible action. This gives sound designers a route to effects that a video alone cannot suggest.
Editing beyond generation: Users can extend clips, build seamless ambient loops and inpaint glitches while preserving the rest of a take. Those operations make Mirelo more useful for iteration than a generator that only produces a fresh clip.
Multiple workflow routes: Mirelo Studio combines video-to-sound, text-to-SFX and iterative editing in a browser workspace. Plugins for Adobe Premiere Pro, DaVinci Resolve and Roblox Studio bring it into named creative environments; the REST API and OpenAPI specification support integration into products or pipelines. Mirelo MCP connects Claude, Cursor, ChatGPT or another MCP client to generate and edit effects.
Commercial use and clip length: Commercial use is included, and clips can be up to 60 seconds. This covers many short effects and ambient passages, but projects needing a single longer generated clip will need another approach.
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, with production access following least privilege. Email support covers Studio, billing and API issues, with responses within two business days.

Pricing

Mirelo is freemium, with monthly billing through Stripe. After creating an account, users can upgrade, downgrade or cancel in Studio. The paid tiers all include the latest Mirelo audio models; their practical differences are monthly credits, project capacity and the cost of additional credits.

Plan	Price	Included	Best fit
Free	0 €/month	5.000 credits/month, 3 projects; projects delete after one week; exports have a watermark	Trying the workflow, not keeping active projects
Creator	20.00 EUR per month	24.000 credits/month, 20 projects; additional credits cost 0,90 € / 1000 credits	Individual creators or small workloads that fit a project cap
Studio	99.00 EUR per month	120.000 credits/month, unlimited projects; additional credits cost 0,90 € / 1000 credits	Regular production without a project ceiling
Scale	299.00 EUR per month	420.000 credits/month, unlimited projects; additional credits cost 0,80 € / 1000 credits	Higher-volume use where the lower extra-credit rate matters
Business	999.00 EUR per month	1.440.000 credits/month, unlimited projects; additional credits cost 0,75 € / 1000 credits	Large monthly workloads seeking the lowest listed extra-credit rate
Enterprise	Custom pricing	Custom monthly credits and volume pricing, unlimited projects, API access and dedicated support	Teams needing a tailored volume arrangement and dedicated support

The Free plan is sharply constrained for ongoing work: its three-project limit is compounded by deletion after one week and watermarked exports. Creator removes those stated free-tier drawbacks and raises the allowance to 20 projects, but still imposes a ceiling. Studio is the first tier with unlimited projects; the higher Scale and Business prices buy substantially larger credit pools and progressively cheaper add-on credits. Enterprise is the fit for custom volume and dedicated support, but requires custom pricing.

Platforms

Mirelo is available through a browser app on the web, macOS and Windows, and through an API. The plugins, REST API and MCP connection offer distinct paths: video editors can use a plugin, while product teams can integrate through the API and users of compatible MCP clients can work through an agent connection.

Who it's for

Mirelo is a strong fit for video creators, editors and teams that need effects aligned to footage and expect to refine the result. The editing and integration options also make it relevant to studios and developers building sound generation into existing tools or pipelines. It is less suited to anyone seeking a permanent free project archive, or a long-form sound generator beyond the 60-second clip limit.

Pros and cons

Pro: Frame-timed generation connects effects to video scenes and actions, reducing the gap between picture and sound design.
Pro: Clip extension, ambient looping and glitch inpainting support refinement without replacing an entire take.
Pro: Plugins, API access and MCP widen the ways teams can fit generation into creative and technical workflows.
Con: Free projects disappear after a week and exports carry watermarks, so the free tier is unsuitable for lasting deliverables.
Con: Free and Creator limit project counts to three and 20 respectively; unlimited projects start at 99.00 EUR per month.
Con: The 60-second maximum clip length rules out generation of longer continuous passages in one clip.

Alternatives

Mirelo focuses on generating sound effects for video, while these alternatives are oriented toward turning audio into musical notation or MIDI. Choose based on whether the job is sound design or transcription.

AI Sound Effect Generators is the broader category to compare if you are choosing among sound-effect tools.
AI Audio-to-MIDI Software is a better direction when the goal is extracting MIDI rather than generating effects for video.
MuScriptor is the alternative to consider for a free hosted demo with MIT-licensed code; its model weights are CC BY-NC 4.0 non-commercial.
AnthemScore suits song transcription: its Web Free plan offers a 14-day full-song trial, then unlimited 30-second clips.
Klangio Transcription Plugin is aimed at generated MIDI preview and playback in VST3, AU and standalone formats.
Klangio Transcription Studio offers unlimited demo transcriptions up to 20 seconds, PDF download and no-account access for those comparing short transcription workflows.
Piano2Notes is a piano-transcription option with unlimited demos of the first 20 seconds and PDF, MIDI and MusicXML previews.
Songscription offers unlimited 30-second transcriptions on its free plan and a 15-minute option on Plus, for readers whose need is transcription length.
Drum2Notes is another transcription alternative, with repeatable free demos of the first 20 seconds.
Guitar2Tabs is for guitar transcription, with free demos up to 20 seconds and PDF download.

Verdict

Choose Mirelo if your team needs video-aware sound effects, practical editing controls and a route from a browser workflow into plugins, an API or an MCP client. The combination is its clearest advantage. Look elsewhere if free-tier persistence matters, if your project requires clips longer than 60 seconds, or if you need transcription rather than sound generation.

	Mirelo	Transkr
Free plan	Yes	No
Free trial	No	Yes
Paid from	€20/mo	—
Open source	No	No
Platforms	api, macOS, Web, Windows	macOS, Windows
Free plan	Yes	No
Polyphonic transcription	—	Yes
Notation export	—	Yes
DAW plugin	—	Yes
Audio input formats	—	WAVE, AIFF, MP3

Mirelo vs Transkr

Mirelo

Transkr