Sahara ran one of the largest testnets the market has seen (200k+ contributors, 8M+ tasks). What you might have missed however is that they opened it up to everyone right now. You don't need to be a dev or an AI expert either. Just someone willing to participate. You can annotate data, validate outputs, or test AI agents and actually earn real rewards. Not just in $SAHARA but also tokens from other ecosystems like $IO, $SOLO, and $CAMP. At the same time people get an actual role in contributing to AI development through their platform as well. Pretty much worth it imo.