Which AI Companies Train on Your Conversations? (2026 Comparison)

In 2026, most mainstream AI chatbots such as OpenAI's ChatGPT, Google's Gemini, and Microsoft's Copilot, among others, use user conversations to improve their models by default, unless users actively opt out. The policies regarding data usage and opt-out options vary by provider, tier, and region, with the opt-out settings often being difficult to find and opting out not always ensuring the removal of previously used data. Venice stands out as it does not use user inputs for training, processing conversations locally without server-side logging. The business rationale for using real user data includes improving model quality, tuning safety features, and maintaining competitive edge, but it raises concerns about privacy, as users' interactions can be stored and used without explicit permission. For those wishing to avoid contributing to AI training, options include using no-training providers like Venice, employing private or temporary chat modes, or running models locally, which prevents data from leaving the user's device.

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