TemPolor API

May 15, 2025 (October 21, 2026)

This is a third-party API for TemPolor by Qustar Technology. It uses your TemPolor subscription: Lite $9.79, Pro $13.99 or Ultra $29.99 a month (as of October 2026). Through a REST API, it makes royalty-free songs with TemPolor v4.8 and instrumentals with i4 from a prompt, your lyrics or a MIDI file, and downloads them as mp3, wav or stems. Songs can be sung in a voice you clone, which TemPolor’s own developer API doesn’t offer (as of October 2026).

Models

Model	What it makes	Notes
TemPolor v4.8 `v4.8`	Songs with vocals	From a prompt or your lyrics, up to 5 minutes in more than 30 languages, sung by a cloned voice or an artist voice, or built on your MIDI file
TemPolor i4 `i4`	Instrumentals	From a prompt, with the key, tempo (50 to 190 BPM) and chords you set
Stem splitter	Stems from your own audio	Upload MP3, WAV, M4A or FLAC and get the vocal and instrument stems as a ZIP

Every song and instrumental downloads as mp3, wav or a stems ZIP. Older model names still work and run on v4.8 or i4. In our tests a track took 51 to 103 seconds.

Pricing

What one track costs on TemPolor’s developer API and on each TemPolor subscription (as of October 2026). Lite and Pro come with a monthly number of tracks, so a track costs its share of the plan, and Ultra has no track limit.

Model	Official API	Lite $9.79/m 1,000 tracks/mo	Pro $13.99/m 3,000 tracks/mo	Ultra $29.99/m unlimited tracks
TemPolor v4.8 song with vocals	$0.04 $0.05 if it writes the lyrics	$0.0098 / track 1,000 songs/mo	$0.0047 / track 3,000 songs/mo	$0 / track no per-song charge
TemPolor i4 instrumental	$0.04 a call	$0.0098 / track 1,000 tracks/mo	$0.0047 / track 3,000 tracks/mo	$0 / track no per-track charge
Stems vocals and instruments	$0.05 4 stems, a call	Pro and Ultra only	$0 / split unlimited splitting	$0 / split unlimited splitting
Voice cloning	not sold	included up to 4 saved voices	included up to 10 saved voices	included up to 50 saved voices

TemPolor lists no free plan. Each song or instrumental request answers with the tracks your plan has left this month, and Ultra runs ten generations at once.
The license grows with the plan: Lite covers social media and podcasts, Pro adds client work and paid ads, and Ultra adds TV, radio and music distribution such as Spotify and Apple Music (TemPolor pricing).
Yearly billing lowers Lite to $5.59, Pro to $7.99 and Ultra to $15.99 a month.
TemPolor’s developer API sells prepaid credit packages from $100, at $0.01 a credit at every package size, with 5 requests at a time on the $100 package (as of October 2026).

Start using the API

A single $15/month subscription covers every API on useapi.net — one token, all services. You connect up to 3 accounts per service, each with its own website subscription, and useapi.net handles the REST API, load balancing, and polling. Need more accounts? Each extra subscription is $10/month and adds 3 more accounts per service.

Subscribe — $15/month Pay with crypto

Pricing and volume options — full refund within the first 14 days if you have fewer than 50 successful generations. Already subscribed? Change the quantity in the Stripe Customer Portal instead of buying again.

Run several TemPolor accounts

Each useapi.net subscription connects 3 TemPolor accounts. Song and instrumental requests don’t need user_id: each job goes to an account with a free slot within its maxJobs (default 10), and a song with a cloned voice or MIDI file runs on the account that holds it. When every account is busy you get 429, so wait 30 seconds and send it again. Pass user_id to run a job on a specific account, and with more than one account connected, uploads and lists need it too. GET scheduler/available shows the free slots on every account.

Every job can post its progress and result to your webhook with replyUrl, or you poll GET music/job_id.

How useapi.net works has tips for keeping your accounts healthy.

Questions

Is there a TemPolor API?

Through useapi.net, yes, with what TemPolor’s own developer API lacks: songs in a cloned voice or an artist voice, songs built on your MIDI file, and instrumentals in the key, tempo and chords you set, all on your TemPolor subscription. TemPolor’s developer API has no voice, MIDI, key, tempo or chord settings (as of October 2026).

How much does the TemPolor API cost?

Through useapi.net, a TemPolor song has no per-song charge on TemPolor Ultra, and on Pro at $13.99 for 3,000 tracks a song costs about half a cent. TemPolor’s developer API charges $0.04 a song, $0.05 when it writes the lyrics, from a prepaid package of at least $100 (as of October 2026). The price table shows every plan.

Is there a TemPolor API key?

Through useapi.net, you call TemPolor with our API token, not a TemPolor developer key, and connect your TemPolor website account once with Setup TemPolor, which takes about 5 minutes. TemPolor’s developer API needs its own API key and a prepaid credit package instead.

Is there a TemPolor stem separation API?

Through useapi.net, yes, with no charge per split on TemPolor Pro or Ultra: every song and instrumental downloads as a stems ZIP, and POST music/stems-splitter splits your own MP3, WAV, M4A or FLAC into vocal and instrument stems. TemPolor’s developer API charges $0.05 for each 4-stem split (as of October 2026).

Setup TemPolor
LLM-friendly API spec Feed this to your LLM to build integrations
Claude Code skill A drop-in useapi.net skill for Claude Code, and a rule for Cursor
Postman collection (October 5, 2026)
GitHub examples Node.js: the same six briefs on TemPolor v4.8 and i4 and three other music APIs, with every track downloaded