HeyGen vs Synthesia:Which is more popular?
In September 2026, HeyGen had more branded searches than Synthesia among AI dubbing tools worldwide. HeyGen had about 2 million branded searches, while Synthesia had 250,000. HeyGen made up 21.1% of all AI dubbing tool searches we track, and Synthesia accounted for 2.7%. When we asked ChatGPT and Google AI Overviews about AI dubbing tools, HeyGen appeared in all five answers and Synthesia in three. HeyGen was mentioned before Synthesia in four out of five answers.
Who do people search for more?
HeyGen, about 8 searches for every 1 for Synthesia
Who does AI mention more?
HeyGen, mentioned in every answer we collected
Who does AI recommend more?
HeyGen, named ahead of Synthesia in 4 of 5 answers
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Top AI dubbing tools in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, HeyGen appeared in all five answers. Synthesia was mentioned in three out of five: in two of the three ChatGPT answers and in one of the two Google AI Overviews. HeyGen was listed before Synthesia in four out of five answers.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
ElevenLabs5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers- HeyGen5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
Synthesia3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Rask AI3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Dubverse2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Papercup0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about AI dubbing tools
5 answers
Asked ChatGPT
“Which AI dubbing tool should I use?”
Asked ChatGPT
“What are the best AI dubbing tools?”
Asked ChatGPT
“What's the best AI dubbing tool for video localisation?”
Searched Google, AI Overview
“ai dubbing tools”
Searched Google, AI Overview
“video dubbing software”
Not named in any answer:
Brands are shown in the order each answer named them. The survey took place in the United States on October 20, 2026.
Is HeyGen or Synthesia more popular in search?
This chart shows how often people search Google for HeyGen and Synthesia by name. Each line represents a brand's share of searches for all six AI dubbing tools we track, month by month, from English-language searches worldwide.
Share of searches by month for HeyGen, Synthesia. The figures are in the table below the chart.
View monthly share of searches table
| Month | ElevenLabs | HeyGen | Synthesia | Papercup | Rask AI | Dubverse |
|---|---|---|---|---|---|---|
| Oct 2025 | 68% | 25.2% | 5.2% | 1% | 0.47% | 0.08% |
| Nov 2025 | 67.2% | 26% | 5.2% | 1% | 0.47% | 0.08% |
| Dec 2025 | 71% | 22.8% | 4.7% | 0.94% | 0.43% | 0.07% |
| Jan 2026 | 72.4% | 22.4% | 3.9% | 0.78% | 0.43% | 0.06% |
| Feb 2026 | 69.9% | 25% | 3.7% | 0.89% | 0.41% | 0.07% |
| Mar 2026 | 73.6% | 21.9% | 3.2% | 0.78% | 0.43% | 0.07% |
| Apr 2026 | 69.9% | 25.1% | 3.7% | 0.89% | 0.41% | 0.08% |
| May 2026 | 70.8% | 24.8% | 3% | 0.9% | 0.41% | 0.07% |
| Jun 2026 | 77.6% | 18.4% | 2.8% | 0.82% | 0.37% | 0.05% |
| Jul 2026 | 77.6% | 18.4% | 2.8% | 0.82% | 0.37% | 0.06% |
| Aug 2026 | 77.8% | 18.6% | 2.3% | 0.84% | 0.31% | 0.06% |
| Sep 2026 | 74.8% | 21.1% | 2.7% | 0.96% | 0.36% | 0.06% |
How has the HeyGen and Synthesia comparison changed over the last 12 months?
3 findings
- HeyGen was ahead of Synthesia in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, HeyGen’s share of searches among AI dubbing tools worldwide moved from 25.2% to 21.1%, and its estimated monthly branded searches moved from 2.2M to 2M.
- Across the 12 months ending September 2026, Synthesia’s share of searches among AI dubbing tools worldwide moved from 5.2% to 2.7%, and its estimated monthly branded searches moved from 457K to 250K.
How did search popularity change for AI dubbing tools worldwide in September 2026?
2 changes
In September 2026, HeyGen gained share of searches among AI dubbing tools worldwide, from 18.6% to 21.1%.
Estimated monthly branded searches for Synthesia worldwide fell 45.2% over 12 measured months, from 457K to 250K in September 2026.
How are branded searches counted?
4 search terms
Brandwave collects information about searches that people make online using HeyGen’s and Synthesia’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
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