Seed Audio

Free plan APIWeb

Plans

Plan	Billed and limits	Price
Basic	billed yearly · 960,000 TTS characters per year · 9,600 voice credits · 1,000 characters per conversion · Up to 480 instant voice clones	$9.90 a year
Pro	billed yearly · 4,200,000 TTS characters per year · 42,000 voice credits · 1,000 characters per conversion · Up to 2,100 instant voice clones	$29.90 a year
Enterprise	billed yearly · 9,600,000 TTS characters per year · 96,000 voice credits · 1,000 characters per conversion · Up to 4,800 instant voice clones	$49.90 a year

As seed-audio.com lists them, read 20 Sept 2026. The maker's own page has the final word.