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PianoFlex vs Keyscape

Keyscape and PianoFlex are different kinds of tool. Keyscape is a library of 36 collector keyboards: pianos, electric pianos and rare keyboards most players have never seen, each restored and then deeply sampled by Spectrasonics over ten years. PianoFlex is one acoustic piano that's modeled rather than recorded, with every part of it yours to shape. Keyscape is about breadth and the character of real vintage instruments. PianoFlex is about the acoustic piano, and how far you can take it.

What they have in common

Beyond the original sound. Keyscape's controls and its STEAM engine turn its instruments into new sounds. PianoFlex's Generate gives a piano a new character, drawn from nearly a billion, from a subtly different instrument to one unlike any real piano.
A program and a plugin on Windows, standalone and VST3, each with its own engine and no separate sampler.
Catching what you play. Keyscape's Flow Capture records audio, MIDI and the sound at once. PianoFlex's Record saves your playing as audio and as a MIDI file.
Your own computers. Keyscape lets its one user authorize as many computers as they need. PianoFlex has no limit on your own computers either.

Where Keyscape stands out

A collection, not one piano. 36 instrument models and over 500 sounds: acoustic pianos, electric pianos and rarer keyboards, many of them hard to find anywhere else.
The real instruments' quirks. Spectrasonics kept the noises and imperfections that give vintage keyboards their character, and models the mechanical, pedal and release noises.
Amps and effects. Its patches run through circuit-modeled vintage amplifiers and effects, made for each sound.
Duo patches combine two of its instruments into one new sound.
Omnisphere. For Omnisphere owners it opens inside Omnisphere too, with over 1,500 more patches built from its sounds.
Deep sampling: up to 32 velocity layers and round robins.
Mac as well as Windows, with AU and AAX plugins.

Where PianoFlex stands out

Small. A 16.6 MB download. Keyscape needs 80 GB of disk, or 30 GB for its Lite install, and 160 GB free while it installs.
Try it first. PianoFlex has a free demo that never expires. Spectrasonics offers no demo of Keyscape, because of its size.
The acoustic piano, shaped by you. The hammers, the strings, the soundboard, the microphones and the room, with seven settings you can draw from the bass to the treble.
The Character generator. Generate gives the piano a new character, drawn from nearly a billion, and its Strength runs from a subtly different instrument to one unlike any real piano, suitable for film and cinematic music. Variation makes close relatives of one you like, and a preset keeps it.
Four pianos at once. Four slots, played one at a time or together as layers.
Song videos of your MIDI files, with notes falling onto a keyboard, tall for phones or wide for YouTube.
$79, where Keyscape is $399.

Which to pick

For electric pianos and vintage keyboards in one place: Keyscape.
If you use Omnisphere: Keyscape, which adds to it.
On a Mac: Keyscape.
For an acoustic piano you can shape, on Windows, with no large library to install: PianoFlex.
If you want to try before you buy, or have a smaller budget: PianoFlex.

Owning both

These two overlap less than most pairs on this site. Keyscape's strength is the world of keyboards around the piano, and PianoFlex's is the acoustic piano itself, so many players would use both, one for each. PianoFlex's demo is here; Keyscape has audio demos on Spectrasonics' site. This page doesn't compare how they sound. That's for your ears.

The facts side by side

Every fact about Keyscape is from Spectrasonics' own pages, checked on 4 November 2026. Prices are list prices in US dollars; sales come and go.

	PianoFlex	Keyscape
How it makes its sound	Modeled. It computes every note as you play, from a model of the hammers, strings, soundboard and room. It plays no recordings.	Sampled, with modeled key and pedal noises and modeled amps (the maker's words).
Price	$79, one-time	$399
Download and disk space	16.6 MB download, 34.5 MB installed	80 GB installed (30 GB for the Lite install); 160 GB free needed while installing
Memory the maker asks for	4 GB, with 4 cores or more and 100 MB of disk (the requirements)	8 GB or more recommended
Runs on	Windows 10 and 11, 64-bit	Windows 10 or later; macOS 10.15 or later
Forms	Standalone and VST3	Standalone, VST3, VST2, AAX; AU on Mac
Needs another program	Nothing else	Nothing else (its own engine)
Copy protection	A license key, entered once. No account and no online activation.	Online authorization through a Spectrasonics account
Computers per license	No limit on your own computers	As many as you need, as the only user
Demo	Free and never expires: 20 minutes a session, with eight keys silent; song videos are in the full version	None
Pianos included	34 presets in eight groups, and four slots to layer pianos	36 keyboard instruments, mostly electric and other keyboards; a few acoustic pianos

More: virtual pianos compared, a table of 28 pianos, and all about PianoFlex.

If something here is out of date, write to [email protected] and we'll correct it.

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