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Company
White Circle
1 Tool
White Circle is a Paris-based AI safety company that builds a real-time control layer between a company's users and its AI models. The platform checks inputs and outputs against company-specific policies to catch hallucinations, harmful content, prompt injection and data leaks. It was founded by Denis Shilov, who drew wide attention in 2024 for publishing a universal jailbreak that bypassed the safety filters of major AI models. In May 2026 the company announced an $11 million seed round backed by angel investors from OpenAI, Anthropic, Mistral and Hugging Face.
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Tools
Halo(github.com/whitecircle/halo)
Open-source framework for post-training LLMs with higher throughput and lower memory than TRL.