List of AI training / data annotation companies (2026)

I’ve been researching AI training jobs for a while and put together a list of companies that offer this type of work.

These platforms usually involve things like:

• data annotation
• evaluating AI responses
• labeling images or text
• language and localization tasks

Some are beginner-friendly microtask platforms, others focus on expert-level work.

I tried to collect the main companies in one place here:

https://www.aitrainingjobs.it/best-ai-training-data-annotation-companies-updated-2026/