A Synthesia alternative
with an AI creator you build
Synthesia sells credit plans built around a library of stock presenter avatars, with a watermark on its free Basic plan. Inflyu builds one AI creator from your reference photos and reuses it across swaps, lip-sync and a batch of talking product ads. Packs from $2.49 never expire, and a monthly plan from $8.99 is optional.
Every fact below links to its public source
What replaces Synthesia
Same job, priced per credit pack.
AI influencer
Build a persistent virtual presenter from reference photos, reused across every tool.
Character ID
Inflyu generates 16 reference photos of your character; you lock at least 10, and new images use up to four as references.
AI lip-sync
Sync your clip to a new audio track, from 7 credits ($0.74+).
UGC ad batch
5 talking ads in 3 formats from one product link, presented by your own AI creator.
AI voiceover with studio voices
Add a generated voice track in a studio voice to an existing clip, with the original sound kept underneath if you want.
Burn-in captions
Auto-captioned output: 2 credits.
How the comparison holds up
Facts checked against Synthesia’s own site, most recently 30 Oct 2026.
Pricing model
Synthesia: Credit plans: Basic is $0 a month with 500 credits a month, and on annual billing Starter lists 15,000 credits a year and Pro 72,000. Inflyu: One-time credit packs from $2.49, or a monthly plan from $8.99.
synthesia.io · Checked 30 Oct 2026
Free tier
Synthesia: The Basic plan is free with 9 AI avatars, and its videos carry a Synthesia watermark. Inflyu: 20 free credits once at sign-up, no card required; Free output carries a small mark; any credit pack removes it on new outputs, no subscription needed.
synthesia.io · Checked 30 Oct 2026
Unused balance
Synthesia: The plan’s monthly allowance resets each billing period; credits bought separately are valid for 12 months. Inflyu: Pack credits never expire; monthly plan credits refill each month and do not roll over.
synthesia.io · Checked 30 Oct 2026
Avatars
Synthesia: Stock avatars: 9 on Basic, 125+ on Starter, 180+ on Pro and 240+ on Enterprise, with 140+ languages and voices; Studio Avatars are a paid add-on of $1,000 a year. Inflyu: No stock avatar library: you build your own AI creator from reference photos.
synthesia.io · Checked 30 Oct 2026
Build your own AI creator instead of picking an avatar
Where Synthesia is ahead: Synthesia lists 140+ languages and voices, up to 240+ stock avatars, dubbing and translation, and SCORM export and SSO on Enterprise, which Inflyu does not offer.
Pay once with credit packs, or go monthly. Pack credits never expire. Failed runs are refunded.
Questions
Can I use one AI presenter across all my videos?+
Yes, within limits. Inflyu builds a Character ID by generating 16 reference photos of your character from its profile photo; you keep at least 10 and lock them. New images use up to four of those locked photos as reference images. Video tries a reference-to-video model fed with the locked photos and may fall back to animating a still generated from those photos. This is reference-image conditioning, not a trained model (no LoRA), so likeness is strong but not guaranteed.
Does Inflyu have a library of stock avatars?+
No. You build your own AI creator from reference photos instead of picking from a stock library.
Can Inflyu make talking ads from a product link?+
Yes. Paste a product link and the UGC ad batch renders 5 talking ads in 3 formats, presented by your AI creator.
How many free credits does a new account get?+
20 credits once, no card required. They are a one-time grant, not a daily or monthly allowance.
Do unused Inflyu credits carry over?+
Pack credits never expire. Monthly plan credits refill each month and don't roll over.
Do I need a subscription?+
No. You can pay as you go: credit packs are one-time purchases and their credits never expire. If you would rather have a steady supply, the monthly Starter ($8.99), Creator ($19), Pro ($49) and Brand ($99) plans refill your credits each month, and you can cancel anytime. Unused monthly credits do not roll over.