Quick answer: If you’re a solo creator or small business making social content, HeyGen ($29/mo Creator plan) gives the best balance of avatar quality and price. Synthesia ($29–89/mo) is built for business training and multilingual corporate video, not social content, and its per-minute cost reflects that. Captions (from ~$10/mo) is the cheapest entry point and the most social-media-native of the three, but trades off some avatar realism.
The number that actually matters isn’t the plan price, though — it’s the credit system underneath it. All three tools meter your output, and the sticker price tells you almost nothing about how much video you can actually make before hitting a wall.
The pricing nobody reads past the homepage
Every AI avatar tool in 2026 runs on some version of a credit or minute system. The plan price gets you in the door; the credits decide whether you can actually publish on schedule.
| Tool | Entry paid plan | What it actually gets you | The catch |
|---|---|---|---|
| HeyGen | $29/mo ($24 annual) | Unlimited videos, 1080p, no watermark | Premium “Avatar IV” content burns credits fast — sources report 10–30 minutes of premium avatar video per month before you’re capped |
| Synthesia | $29/mo ($18–22 annual) | 10 minutes of video/month, logo removal | Unused credits don’t roll over; jumping to Creator ($89/mo) only gets you to 30 minutes |
| Captions | ~$10–13/mo | Auto-captions, basic AI editing | Full AI avatar creation and dynamic caption styles are often locked to higher Pro/Business tiers |
None of this is hidden exactly — it’s just buried past the headline number, which is why “starting at $X/month” comparisons across review sites are mostly useless on their own.
HeyGen: best all-around for creators
HeyGen’s Creator plan at $29/month removes the watermark and unlocks 1080p exports, voice cloning, and faster rendering — the stuff that makes the platform usable for weekly publishing instead of one-off experiments. Avatar quality is the consistent standout: HeyGen scores 9.2/10 on G2’s avatar quality metric, and it’s the tool most often cited by creators replacing on-camera filming entirely.
The trade-off is the credit system on premium “Avatar IV” videos, which can eat a Creator plan’s monthly allowance in well under an hour of finished footage. If your content is mostly short-form social clips, this is rarely a problem. If you’re producing longer explainer or training content, budget for Team or Business tiers (roughly $39–149/month depending on seats and resolution needs).
Synthesia: built for business, priced like it
Synthesia is the platform most companies reach for when the use case is training, onboarding, or multilingual corporate explainers — not social content. That shows up directly in the pricing: Starter at $29/month buys just 10 minutes of video, and Creator at $89/month only stretches that to 30 minutes. Per finished minute, that’s around $2.90–3.00, among the most expensive in this category.
What you get for that price is real: 180+ stock avatars, strong multilingual dubbing, and enterprise features like SSO and SCORM export at the top tier (enterprise contracts average around $30,000/year). If you’re a solo creator making short social videos, Synthesia is solving a different problem than yours, and you’ll likely pay business-software prices for creator-tool usage.
Captions: cheapest way in, built for social
Captions (by Mirage) is the most affordable of the three, with paid plans starting around $10–13/month and a usable free tier. It leans hardest into social-native features — AI eye contact, teleprompter recording, real-time editing, and dubbing into 28+ languages — and is built around the assumption that you’re publishing directly to TikTok, Reels, or Shorts rather than producing polished corporate video.
The trade-off: full AI avatar creation and the more advanced dynamic caption styles are often gated to Pro and Business tiers, so the bargain entry price doesn’t always include the feature that made you click in the first place. Read the tier breakdown carefully before assuming the cheap plan covers what you actually want.
Who should use what
Solo creator or small business making regular social video content: HeyGen is the strongest default — best avatar quality for the price, and the credit ceiling rarely bites at short-form lengths.
Budget is the deciding factor and you’re comfortable with a less polished avatar: Start with Captions. It’s the cheapest way to test whether AI avatar video fits your workflow at all before committing to a pricier platform.
You’re producing training, onboarding, or multilingual corporate video: Synthesia is the right tool for that job specifically — but expect to pay accordingly, and don’t choose it for casual social content.
The bottom line
The plan price on any of these tools is a starting point, not the real cost. Before subscribing, work out roughly how many minutes of finished video you need per month and check that number against the credit system — not the homepage price. HeyGen currently offers the best ratio of quality to credits for creator-scale output; Synthesia and Captions sit on opposite ends of the price-vs-polish spectrum around it.
Pricing and credit allowances change frequently across all three platforms — confirm current numbers directly on each tool’s pricing page before subscribing.