Altagonist
7.8#1 in ai alt text generatorsFrom €5 a monthFree planWebSelf-hostedWindows
VisitAltagonist vs AltText.ai
AltText.ai
6.3#18 in ai alt text generatorsFrom $49 a yearWebAPIExtension
VisitWhat both publish
| Fact | Altagonist | AltText.ai |
|---|---|---|
| Bulk processing | Users can select multiple media-library images and process them together. | The enterprise offering supports batch processing of thousands of images per hour with no daily limits. |
| Image formats | JPEG, PNG, GIF and WebP are handled natively, while SVG, AVIF, TIFF and BMP are converted automatically. | Standard formats include JPG, PNG, GIF, WebP, and BMP; paid plans support AVIF, HEIC, HEIF, JP2, SVG, and TIFF at two credits per image. |
| Languages | Alt text generation supports 70 languages. | The service generates alt text in more than 130 languages. |
| Support | The documentation directs users with persistent server availability issues to contact support. | The enterprise offering advertises dedicated support, API access, and volume pricing for custom enterprise plans. |
Altagonist plans
- FreeFree
- Personal€5 a month
- Pro€12 a month
- Agency€29 a month
AltText.ai plans
- Credit Pack$3, paid once
- Bronze$49 a year
- Silver$189 a year
- Platinum$229 a month
- Gold$489 a year
- Titanium$1,179 a year
Pick Altagonist if…
It suits WordPress site owners who need to generate alt text in batches or across multiple languages. It also offers automatic generation on upload and manual editing in the media library.
Pick AltText.ai if…
AltText.ai suits site owners and content teams who need image descriptions across multiple languages or publishing platforms. Developers can also use its API, webhooks, or MCP server.