The arena · AI voice tool review
Synthesys
by Synthesys (Synthesys AI Studio / Synthesys.io)
All-in-one AI video + voice studio: 400+ voices, 140+ languages, 10-second cloning
Some links are partner links: if you subscribe through them, we may earn a commission, at no extra cost to you. The crowd verdicts stay independent.
From $20/mo
Indie $20/mo billed annually ($240/yr) or $29 month-to-month; Studio $41/mo annual, Agency $83/mo annual (verified on official pricing page, July 2026)
Free trial, no card required; exact limits (minutes, commercial use) not published on site
400+ (pricing page claims 1,000+)
140+
Yes
Yes
What is Synthesys?
Synthesys is an AI content platform combining text-to-speech, voice cloning and AI video (avatars, UGC ads, dubbing) in one subscription. Its voice generator offers 400+ studio voices across 140+ languages, cloning from 10 seconds of audio, and text-prompt voice design, with MP3/WAV export. Since 2025-2026 the product has pivoted toward AI video generation (orchestrating Sora 2, VEO 3.1, Kling 3), with voiceover as one module inside credit-based plans.
Synthesys pros & cons
Pros
- 400+ studio voices in 140+ languages (site's pricing page claims 1,000+ voices / 175+ dialects)
- Voice cloning from just 10 seconds of audio, plus text-prompt voice design
- Full commercial rights on every paid plan: no royalties, no attribution, no usage restrictions
- Cheap entry point: $20/mo billed annually (Indie), ~30% below the $29 monthly price (site advertises 40%)
- Voices rated well by users: Trustpilot 4.3/5 (113 reviews), with voice quality frequently praised
- Bundles TTS with AI avatars, video and dubbing in one subscription
Cons
- Opaque credit system: Trustpilot users report generations deducted at significantly higher rates than tooltips suggest, with no warning
- Product now video-first; TTS is a secondary module and voice limits are buried in video-credit plans
- API not included in regular plans: sold separately as a custom-priced package via sales contact, with no self-serve pricing published
- Inconsistent claims on its own site (400+ vs 1,000+ voices; 140+ vs 175+ languages)
- Very tight refund window: 72 hours and under 5 minutes of tool usage per the official policy; some users report refused refunds and post-purchase confusion about what their plan includes
The arena’s verdict
Pick Synthesys if you want one affordable subscription that covers voiceover, dubbing and AI video ads: at $20-29/mo with full commercial rights it undercuts buying a TTS tool and a video tool separately, and its 140+ language spread is genuinely wide. Skip it if voice is your main product: audio purists and audiobook narrators will get more realistic output from ElevenLabs, and developers should look elsewhere since API access is a custom-priced separate package. Also budget carefully: real users report credits burning much faster than advertised, and the refund window is only 72 hours with under 5 minutes of usage, so test the free trial thoroughly before committing annually.
Thumbs up or thumbs down
Cast your verdict
Would you recommend Synthesys, or warn the crowd away?
Top Synthesys alternatives
All alternativesThe realism benchmark for AI voices: best-in-class TTS and cloning at a premium price
Voiceover studio with a timeline editor: built for e-learning, not emotional narration
All-in-one TTS studio: 500+ voices in 100 languages plus a built-in video editor
Compare Synthesys head-to-head
Synthesys: frequently asked questions
Is Synthesys free?
Synthesys offers a free tier (Free trial, no card required; exact limits (minutes, commercial use) not published on site). Paid plans start at $20/mo.
How much does Synthesys cost?
Synthesys starts at $20/mo (subscription). Indie $20/mo billed annually ($240/yr) or $29 month-to-month; Studio $41/mo annual, Agency $83/mo annual (verified on official pricing page, July 2026)
Does Synthesys support voice cloning?
Yes, Synthesys supports voice cloning.