Best AI Alt Text Generators in 2026
Updated
In short: AltTextLab is ranked #1 of 27 as of 4 October 2026, ahead of AutoAlt.ai and Alt Audit. The best-ranked option with a free plan is AutoAlt.ai. The lowest first paid tier on this page is WriteAlt at $0.26/mo.
AI alt text generators can help create image descriptions within publishing workflows, whether you handle images one at a time or in bulk. Compared on image formats and supported languages, the entries also cover API access, bulk processing, CMS plugins, custom generation rules and publishing workflows. Free-plan availability and paid-from pricing add cost considerations. AltTextLab, AutoAlt.ai and Alt Audit are among the tools covered, alongside AltText.ai, Altvisor, Uix Page Builder, AI Alt Text Generator and AI Image Alt Text Generator. Compare where descriptions need to be created or published, and which integrations, scale and content controls suit your process.
27 AI alt text generators ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
AI Alt Text Generators, one module each. A lit port is something its maker publishes; 4 of the 25 on this page have a public API.
- 01 AltTextLab API yesOSS not on recordFREE yesDOCS 7.4$4/mo
- 02 AutoAlt.ai API yesOSS not on recordFREE yesDOCS 7.4$4.49/mo
- 03 Alt Audit API yesOSS not on recordFREE yesDOCS 7.3$5/mo
- 04 AltText.ai API yesOSS not on recordFREE not on recordDOCS 7.0$4.08/mo
- 05 Altvisor API not on recordOSS not on recordFREE yesDOCS 5.9€12/mo
- 06 Uix Page Builder API not on recordOSS not on recordFREE yesDOCS 5.9Free
- 07 AI Alt Text Generator API not on recordOSS not on recordFREE yesDOCS 5.8Free
- 08 AI Image Alt Text Generator API not on recordOSS not on recordFREE yesDOCS 5.8Free
- 09 Alt Text Studio API not on recordOSS not on recordFREE not on recordDOCS 5.6$4/mo
- 10 Alt Text Pro API not on recordOSS not on recordFREE not on recordDOCS 5.2
- 11 AltText.io API not on recordOSS not on recordFREE not on recordDOCS 5.2$19/mo
- 12 AltTextAPI API not on recordOSS not on recordFREE not on recordDOCS 5.2
- 13 ImageComply API not on recordOSS not on recordFREE not on recordDOCS 5.2
- 14 Alta API not on recordOSS not on recordFREE not on recordDOCS 5.1
- 15 Altagonist API not on recordOSS not on recordFREE not on recordDOCS 5.1
- 16 AltGen API not on recordOSS not on recordFREE not on recordDOCS 5.1
- 17 ALTtext.org API not on recordOSS not on recordFREE not on recordDOCS 5.1
- 18 ATaaS API not on recordOSS not on recordFREE not on recordDOCS 5.1
- 19 AI Alt Text Builder API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 20 Alt Text IQ API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 21 ALTification API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 22 easyAlt API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 23 Seeing AI API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 24 Splash Access Alt Text API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 25 WriteAlt API not on recordOSS not on recordFREE not on recordDOCS 5.0$0.26/mo
Compare all 25 in a table
| # | Platform | Score | Free plan | From | Free plan | Paid from | Bulk processing | API access |
|---|---|---|---|---|---|---|---|---|
| 1 | AltTextLab | 7.4 | Free plan | $4/mo | Yes | 4 /mo | Yes | Yes |
| 2 | AutoAlt.ai | 7.4 | Free plan | $4.49/mo | Yes | — | Yes | Yes |
| 3 | Alt Audit | 7.3 | Free plan | $5/mo | Yes | 5 /mo | Yes | Yes |
| 4 | AltText.ai | 7.0 | No | $4.08/mo | No | 5 /mo | Yes | Yes |
| 5 | Altvisor | 5.9 | Free plan | €12/mo | Yes | — | Yes | Yes |
| 6 | Uix Page Builder | 5.9 | Free plan | Free | Yes | — | Yes | Yes |
| 7 | AI Alt Text Generator | 5.8 | Free plan | Free | Yes | — | Yes | Yes |
| 8 | AI Image Alt Text Generator | 5.8 | Free plan | Free | Yes | — | Yes | Yes |
| 9 | Alt Text Studio | 5.6 | No | $4/mo | No | 4 /mo | Yes | Yes |
| 10 | Alt Text Pro | 5.2 | No | — | Yes | 4 /mo | Yes | Yes |
| 11 | AltText.io | 5.2 | Free plan | $19/mo | Yes | 19 /mo | Yes | Yes |
| 12 | AltTextAPI | 5.2 | No | — | Yes | 9 /mo | Yes | Yes |
| 13 | ImageComply | 5.2 | No | — | Yes | 25 /mo | Yes | No |
| 14 | Alta | 5.1 | No | — | Yes | — | Yes | — |
| 15 | Altagonist | 5.1 | No | — | Yes | — | Yes | — |
| 16 | AltGen | 5.1 | No | — | Yes | 29 /mo | Yes | Yes |
| 17 | ALTtext.org | 5.1 | No | — | Yes | — | Yes | Yes |
| 18 | ATaaS | 5.1 | No | — | Yes | 9 /mo | Yes | Yes |
| 19 | AI Alt Text Builder | 5.0 | No | — | No | 4.99 /mo | Yes | No |
| 20 | Alt Text IQ | 5.0 | No | — | No | 29 /mo | Yes | No |
| 21 | ALTification | 5.0 | No | — | No | — | Yes | Yes |
| 22 | easyAlt | 5.0 | No | — | No | 39 /mo | Yes | — |
| 23 | Seeing AI | 5.0 | No | — | Yes | — | — | — |
| 24 | Splash Access Alt Text | 5.0 | No | — | No | — | Yes | No |
| 25 | WriteAlt | 5.0 | No | $0.26/mo | No | 3.17 /mo | Yes | Yes |
Is your platform on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which AI alt text generator is ranked first on Inferse?
AltTextLab is ranked #1 of 27 with a score of 7.4. AutoAlt.ai is second and Alt Audit third.
How many of these have a free plan?
8 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, WriteAlt has the lowest first paid tier we found: $0.26/mo.
How is this list ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.