Pollinations
Anonymous access No signup and no API key: call the image.pollinations.ai and text.pollinations.ai endpoints directly for image/text generation; official rate limits are not published.
Quest Pollen Earn free Pollen by completing GitHub Quests, trying models, or publishing an app/agent (1 Pollen ≈ $1) to spend on paid models; quests and rewards change dynamically.
Text / image / audio generation API, no signup, open source