Resolution criteria

This market resolves to YES if, before January 1, 2028, at 11:59 PM UTC, there is clear and verifiable public evidence that an osu! mapper has used a beatmap draft generated by melokai.com as a starting base, timing setup, or draft to create a beatmap that is subsequently uploaded to the official osu! website (osu.ppy.sh).

Verifiable evidence includes any of the following:

• Direct acknowledgement: The mapper explicitly states in the beatmap description, creator notes, forum post, or public social media (e.g., X/Twitter, Reddit) that they used Melokai to generate the starting base, timing, or layout.

• Visual/Media proof: A public video or stream (e.g., YouTube, Twitch) shows the mapper importing a Melokai-generated .osu or .osz file into the editor as their project's starting point.

• Developer/Community confirmation: Public confirmation from the Melokai developers or community administrators showing a mapper using the tool to start a map, verified by the mapper.

Notes and Edge Cases:

• The uploaded map does not need to be ranked or loved; it can be in any state (including pending, WIP, or graveyarded).

• "Starting base" means the mapper used the generated output to bypass the "blank canvas" stage, even if they heavily edited, overhauled, or completely replaced elements of the draft during their manual mapping process.

• If no such verified instance is publicly documented before the cutoff, the market resolves to NO. If the service goes offline permanently before an instance is documented, the market resolves to NO.

Background

Melokai is an AI-powered osu! beatmap mapping companion launched in July 2026. It allows users to upload audio files (such as MP3, OGG, or WAV) and automatically generate playable beatmap drafts custom-tailored to specific difficulties, slider speeds, and style archetypes (e.g., flow aim, aggressive jumps). The tool's stated purpose is to solve the "blank canvas" problem by providing mappers with an initial timed layout to edit and refine manually.

However, the use of generative AI in osu! mapping is highly controversial. Around the time of Melokai's launch, the osu! team introduced proposals and strict guidelines under the Ranking Criteria to disqualify and ban generative AI usage (including AI-generated timing and hit objects) from reaching the ranked section. This tension surrounding AI-generated content may influence whether mappers openly disclose or use tools like Melokai in their workflows.

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