Synthesia Review: The £23 Avatar Tool Built for L&D, Not LinkedIn

Synthesia is the AI video tool corporate L&D buyers have been quietly using since 2022, and the one solopreneurs keep trying to make work for short-form social content. The mismatch isn't the tool's fault. Synthesia was built for a specific job — training videos, onboarding modules, SOP walkthroughs, multilingual internal comms — and on that job it has no real competitor at the price. The avatars are buttoned-up rather than expressive, the workflow assumes you're producing at volume rather than one-off, and the licensing model is unforgiving in places creators won't expect. Use it for what it's built for and the £23 a month is among the better software spends in this category. Use it as a HeyGen replacement and you'll be disappointed by week two.

Our verdict

Buy Starter at £23/month (billed annually, around £17/mo on the lower band) if your job involves producing repeatable presenter-led training, onboarding, or explainer content — especially anything that needs to land in more than one language. The avatars are corporate-appropriate, the localisation pipeline is genuinely two years ahead of HeyGen, and the script-to-video flow scales cleanly once you've built a template library.

Skip Synthesia if you're producing short-form LinkedIn or TikTok presenter clips (HeyGen's Avatar IV is more expressive), faceless stock-led video (Pictory), or anything that needs to run in paid ads using a stock avatar — the licensing forbids it on every tier, and most buyers don't read that page until after they've shipped a campaign.

The positives:

• 140+ language localisation pipeline that holds up on European languages.
• Free tier gives 10 minutes/month watermarked — enough to evaluate properly.
• Avatar library is the largest in the category and skews professional.
• Template system rewards teams producing 20+ training videos a quarter.
• GBP pricing on the UK page; no FX surprises on the card.

What it actually costs in 2026

Figures verified against Synthesia's UK pricing page on 28 May 2026, converted from the USD list ($18-$29 Starter, $89 Creator). The minute allocation is annual rather than monthly, which catches people out — 120 minutes a year is ten minutes a month, not the rolling allowance most SaaS buyers assume.

The cost trap to flag: stock avatars cannot appear in paid advertising on any tier, including Enterprise. If your agency was planning to spin up Synthesia for a client's Meta Ads campaign using one of the library presenters, that's a contract breach waiting to happen. Custom avatars (your own likeness, captured through Synthesia's studio process) are cleared for ads from Creator upwards. The licensing page is two clicks from the pricing page and we'd genuinely recommend reading it before signing.

What it's actually like to use

You write a script in the editor, pick an avatar, pick a background (or upload a template), pick a voice, and hit generate. A two-minute training video renders in roughly four to six minutes. The output drops into your library, ready to embed in an LMS or share via direct link. For a team producing a dozen onboarding modules, the template system means each subsequent video takes a fraction of the first one's time.

Three things become obvious within the first month:

The avatars are corporate-realistic, not social-realistic. They look like a presenter your HR department would hire — composed, neutral, slightly stiff. For training content this is correct. For a punchy LinkedIn clip with personality, it's the wrong vibe and no amount of script tweaking fixes it.

Localisation is the quietly remarkable feature. Drop an English script in, pick German, and the avatar delivers it with re-synced lip-movement that holds up on close inspection. We ran the same 90-second induction script through French, Spanish, German, Polish and Portuguese — all five passed a native-speaker sanity check for comprehension. This is where Synthesia earns its keep against HeyGen.

The minute allocation is tighter than it looks. 120 minutes a year sounds generous until you're on your fourth re-render of a five-minute SOP. Plan to upgrade earlier than the Starter tier suggests if your team is producing seriously.

Where it fits versus the alternatives

Versus HeyGen: closer than the marketing implies. HeyGen's avatars are more expressive and better-suited to short-form social. Synthesia's avatars are more corporate and the localisation is more mature. For solopreneurs publishing LinkedIn videos, HeyGen. For agencies producing training content for enterprise clients, Synthesia. The head-to-head lives in Synthesia vs HeyGen.

Versus Pictory: different categories. Pictory builds stock-footage video from blog posts and scripts; Synthesia builds avatar-presenter video. Most teams need one or the other, not both. We covered the choice in Pictory vs Synthesia, and the wider category in Best AI Video Generators.

Versus Descript: not a real comparison. Descript is for editing existing audio and video via transcript; Synthesia is for generating presenter video from scratch. They live in adjacent corners of the workflow.

Who should pay for it

• L&D and corporate training teams producing onboarding, compliance, or SOP video at volume.
• Agencies serving enterprise clients that need multilingual presenter content delivered in weeks not quarters.
• Internal comms teams at multinationals where the same announcement needs to land in eight languages.
• EdTech and course creators building formal, presenter-led module libraries.

Who should skip it

• Solopreneurs publishing short-form social — HeyGen is the better fit and £2 cheaper at the entry tier.
• Faceless YouTube channels — wrong category entirely, use Pictory or Fliki.
• Anyone running paid ads with stock avatars — licensing forbids it; don't find out the expensive way.
• One-off video makers — the template system rewards volume; a single explainer doesn't earn the subscription back.

Final note

Synthesia is a specialist tool. In its specialism — multilingual, presenter-led, scaled training content — it is the best option on the market by a margin that's widened, not narrowed, since 2024. Outside that specialism it's an awkward fit, and the licensing details around stock avatars in advertising will catch out anyone who didn't read the fine print. As of late May 2026, we'd recommend Starter for any team producing more than four training videos a quarter, Creator for anyone needing a custom avatar with ad rights, and the free tier for two weeks of honest evaluation before committing. For the right buyer, this is one of the few AI video tools that has earned its place in the stack.