Lacuna

AI music generators

Free planAPIBrowser extensioniOSWeb

7.0#68 of 124$0.79/mofirst paid tier

Overview

Lacuna turns a short idea into song lyrics and can send them to its music generator to create a track with AI vocals. The editor supports line-by-line rewrites, syllable counts, automatic rhyme highlighting, and rhyme suggestions ranked by meaning. It supports nine languages, with phonetic rhyme support for English, Spanish, Chinese, Japanese, and Korean. Automatic snapshots let users restore an earlier take after AI edits. Lacuna describes the workspace for songwriters, rappers, topliners, producers, and first-time writers, and says generated or edited lyrics may be recorded, released, and used commercially. The free plan provides 120 credits per month without requiring a credit card; each lyrics AI use costs five credits, and unused credits do not roll over. Pricing lists paid service from $9.50/mo (annual), while Basic is 19.00 USD per month. Audio downloads require a subscription, and credit packs alone do not include them. The developer API requires Pro or Ultra and uses credit-based billing. Lacuna lists web, iOS, extension, and API platforms.

Who it is for

Lacuna suits songwriters, rappers, topliners, producers, and beginners looking for help drafting and revising lyrics. It may also suit developers who need an API, provided they have Pro or Ultra access.

What is good

Editor supports line rewrites and syllable counts.
Rhyme suggestions are ranked by meaning.
Supports nine languages.
Generated and edited lyrics may be used commercially.

What to know first

Lyrics AI use costs five credits per use.
Unused credits do not roll over.
Audio downloads require a subscription.
API access requires Pro or Ultra.

Verdict

Lacuna offers lyric drafting and revision tools with multilingual support and a route from lyrics to AI-vocal tracks. Check credit use and download requirements before choosing a plan; the annual pricing note lists a starting price of $9.50/mo.

Lacuna plans and pricing

All plans

Basic $19/mo billed monthly 2,500 credits/month · Approximately 100 songs · Up to 5 concurrent generations lacuna.fm · 21 Sept 2026

Pro $49/mo billed monthly 7,500 credits/month · Approximately 300 songs · Up to 10 concurrent generations lacuna.fm · 21 Sept 2026

Ultra $99/mo billed monthly 25,000 credits/month · Approximately 1,000 songs · Up to 20 concurrent generations lacuna.fm · 21 Sept 2026

Credit Pack S $50/mo one-time purchase 3,500 credits · Approximately 70 generations lacuna.fm · 21 Sept 2026

Credit Pack M $100/mo one-time purchase 8,000 credits · Approximately 160 generations lacuna.fm · 21 Sept 2026

Credit Pack L $500/mo one-time purchase 50,000 credits · Approximately 1,000 generations lacuna.fm · 21 Sept 2026

Compared on AI music generators

Free plan: Yeslacuna.fm
Paid from: $9.50/molacuna.fm
Prompt lyric generation: Yeslacuna.fm
Lyric rewriting: Yeslacuna.fm
Song structure controls: Yeslacuna.fm
Supported languages: 9 languageslacuna.fm
Export formats: MP3lacuna.fm

Facts

What it does: Lacuna’s AI lyrics generator turns a one-line idea into song lyrics and connects them to a music generator that can produce a track with AI vocals.lacuna.fm · 29 Sept 2026
Editor: The lyrics editor supports line-by-line rewrites, syllable counts, automatic rhyme highlighting, and rhyme suggestions ranked by meaning.lacuna.fm · 29 Sept 2026
Languages: The lyrics workspace supports nine languages, with phonetic rhyme support for English, Spanish, Chinese, Japanese, and Korean.lacuna.fm · 29 Sept 2026
Version history: The editor saves snapshots automatically as the AI edits and lets users restore an earlier take.lacuna.fm · 29 Sept 2026
Intended users: The maker describes the lyrics workspace for songwriters, rappers and topliners, producers, and first-time writers.lacuna.fm · 29 Sept 2026
Commercial use: The lyrics page says generated and edited lyrics are the user’s to record, release, and use commercially.lacuna.fm · 29 Sept 2026
Credit limits: Lyrics AI assistant use costs five credits per use, and pricing says unused credits do not roll over between cycles.lacuna.fm · 29 Sept 2026
Downloads: Pricing says audio downloads require a subscription; credit packs alone do not include them.lacuna.fm · 29 Sept 2026
Integrations: Lacuna says lyrics can be sent to its music generator, while its developer API supports REST, a TypeScript SDK, CLI tools, and an MCP server for compatible agents including Cursor, Claude Code, and Codex.lacuna.fm · 29 Sept 2026
API restriction: The maker says API access requires Pro or Ultra and uses credit-based billing.lacuna.fm · 29 Sept 2026
Security and data: The privacy policy says uploaded materials, prompts, generated content, and task records may be retained while available in the service, and says it cannot guarantee absolute security.lacuna.fm · 29 Sept 2026
Account deletion: The privacy policy says deleting an account ends access and disables public sharing but does not automatically erase all stored account information or content.lacuna.fm · 29 Sept 2026
Support: The maker lists support by email, feedback form, and Discord.lacuna.fm · 29 Sept 2026
Company: Lacuna says it is operated by JOYLINK LTD and lists its location as London, United Kingdom.lacuna.fm · 29 Sept 2026