Best Free Melody to Music AI Tools in 2026 — I Tested 5 With 25 Audio Samples

Suno is the current leader in AI-generated music with vocals. Enter a text prompt describing the style, mood, and lyrics (or let the AI write them), and Suno generates a full song — vocals, instruments, structure, and all. The v3.5/v4 models produce remarkably human-sounding vocals across genres from pop to metal to jazz. Audio upload is supported for reference but the AI treats it as inspiration rather than strict conditioning.

For text-to-song generation, Suno is excellent. Vocal quality scored highest in our test (9.2/10). Genre adherence was strong across all 25 test prompts. However, when we uploaded our test melodies as reference audio, Suno's output often diverged significantly from the source melody — averaging a 7.5/10 melody preservation score. It creates great music, but it creates its own version of your melody rather than faithfully building around it.

Free tier gives 50 credits/day (~5–10 generations). Commercial rights require the $10/mo Pro plan. The 4-minute output length is the longest in our test.

Udio generates songs from text prompts with impressive audio quality. Its standout feature is audio inpainting — you can regenerate specific sections of a track, extend it, or modify parts while keeping the rest. This gives more creative control than Suno's all-or-nothing regeneration. Udio also supports uploading audio as reference, though like Suno it treats it more as stylistic inspiration than strict melody conditioning.

Audio quality was excellent (9.1/10), on par with Suno. The inpainting feature is genuinely useful — you can fix a weak chorus or extend an intro without regenerating the entire track. Melody preservation scored 8.0/10 — better than Suno but still below MiOffice AI's melody-conditioned approach. Udio's output tends to capture the general feel of your input audio while taking creative liberties with structure.

Free tier is limited. Paid plans unlock longer outputs (up to 2 minutes via extend) and commercial rights. The web-only platform means no mobile app.

Soundraw is a music generation platform designed for content creators who need royalty-free background music. Choose a mood, genre, tempo, and length, and the AI generates a track. You can customize individual sections (intro, buildup, climax, outro) and adjust energy levels. The output is clean, professional loop-based music suitable for videos, podcasts, and presentations. However, there is no melody input — Soundraw generates entirely from presets and parameters.

Since Soundraw doesn't accept melody input, we tested it on prompt-based generation quality instead. Audio quality was decent (8.4/10) — clean, well-mixed, but noticeably loop-based rather than truly generative. Tracks sound professional but repetitive after 30 seconds. The section editor is a nice touch for adjusting energy curves. The biggest limitation for our test: you cannot upload a melody. This is strictly a preset-to-music tool, which makes it fundamentally different from what MiOffice AI and Suno offer.

No free tier at all. Plans start at $16.99/mo — the most expensive in our test. The target audience is clearly content creators with a monthly budget for production music.

AIVA (Artificial Intelligence Virtual Artist) is an AI music composition tool focused on classical, cinematic, and electronic genres. It works at the MIDI level — generating note sequences, chord progressions, and arrangements that are then synthesized into audio. You can upload MIDI files as input, choose from style presets (classical, cinematic, pop, electronic), and edit individual instrument tracks. The MIDI-first approach gives composers more control over the output but requires more musical knowledge to use effectively.

For our melody-conditioning test, AIVA required converting audio samples to MIDI first, which loses nuance from the original recording. Melody preservation scored 8.2/10 when starting from MIDI — decent but limited by the MIDI conversion step. Audio quality was 8.5/10 — the synthesized output sounds good for cinematic and classical genres but less convincing for pop, rock, or electronic styles where Suno and Udio excel.

Free tier limits you to 3 downloads per month with no commercial rights. The $11/mo Standard plan unlocks commercial rights for monetized content. AIVA's desktop editor is the most hands-on composition tool in our test, appealing to musicians who want granular control rather than one-click generation.