Directory
Kling AI
Text-to-video, strong physics
Free tier + paidAI media generationklingai.com
What it is
Kuaishou's video generator, now on Kling VIDEO 3.0 with 4K output added in April 2026 and native synchronised audio. A 5-second 1080p clip with audio costs about 60 credits. Includes lip-sync, motion brush and start/end frame control.
Why it earns a slot
Best-in-class physical realism - cloth, hair, water and human motion hold together where rivals melt into soup. Consistently the cheapest credible route to convincing 1080p character motion, and API failures do not consume credits.
Know before you commit
Free-tier clips are capped at 360-540p, permanently watermarked, and carry no commercial rights. On consumer plans a failed generation still burns your credits - only the API refunds failed tasks.
Getting started
API sold as prepaid resource packs: $9.80 trial (100 units, 30 days) up to $7,560 for 60,000 units.
Neighbourhood
How Kling AI sits against the rest of the atlas — swaps, companions and the tools builders actually save alongside it.
Also in AI media generation
Adobe Firefly
firefly.adobe.comNot yet swept
Indemnified, commercially safe gen
Free tier + paidAI media generation
Free tier with limited watermarked credits. Standard $9.99/mo (2,000 credits), Pro $19.99 (4,000), Premium $199.99 (50,000). API is enterprise contract only.
Open dossier
Black Forest Labs (FLUX)
bfl.aiNot yet swept
Open-weight image models + API
Free tier + paidAI media generation
API per image: FLUX.2 klein from $0.014, pro from $0.03, flex $0.05, max $0.07. Kontext pro $0.04, max $0.08. Open weights free to self-host.
Open dossier
Cartesia
cartesia.aiNot yet swept
Ultra-low-latency TTS for agents
Free tier + paidAI media generation
Free 20K credits, personal use only. Pro $5/mo (100K), Startup $49 (1.25M), Scale $299 (8M). TTS is 1 credit/character, Ink STT 1 credit/second, Line voice agents $0.014/min.
Open dossier
Descript
descript.comNot yet swept
Doc-style video and audio editor
Free tier + paidAI media generation
Free 1 hr/mo, 720p watermarked. Hobbyist $16/mo annual (10 hrs, 400 AI credits), Creator $24 (30 hrs, 800), Business $50 (40 hrs, 1,500). Monthly billing runs about 45% higher.
Open dossier