Microsoft Research Blog

VeriTrail: Detecting hallucination and tracing provenance in multi-step AI workflows 

August 5, 2025 | Dasha Metropolitansky
VeriTrail, new from Microsoft Research, can detect AI-generated content that is not supported by the source text, trace the provenance of content from final output back to the source, and locate where errors were likely introduced.

Recent Posts

  1. Research Focus | September 9, 2024

    Research Focus: Week of September 9, 2024 

    September 12, 2024

    Investigating vulnerabilities in LLMs; A novel total-duration-aware (TDA) duration model for text-to-speech (TTS); Generative expert metric system through iterative prompt priming; Integrity protection in 5G fronthaul networks:

  2. Decorative graphic with wavy shapes in the background in blues and purples. Text overlay in center left reads: “Research Focus: August 26, 2024”

    Research Focus: Week of August 26, 2024 

    August 28, 2024

    Learn what’s next for AI at Research Forum on Sept. 3;  WizardArena simulates human-annotated chatbot games; MInference speeds pre-filling for long-context LLMs via dynamic sparse attention; Reef: Fast succinct non-interactive zero-knowledge regex proofs.

  3. Research Focus: June 24, 2024

    Research Focus: Week of June 24, 2024 

    June 26, 2024

    In this issue: RENC makes 5G vRAN servers more energy efficient; CoExplorer uses AI to keep video meetings on track; Automatic bug detection in LLM-powered text-based games; MAIRA-2: Grounded radiology report generation.

  4. Research Focus: May 27, 2024

    Research Focus: Week of May 27, 2024 

    May 29, 2024

    How can generative AI tools represent less common identities and narratives; Can LLMs help players participate in game narratives; Using LLMs to improve geospatial demographic data; A Graph RAG Approach to Query-Focused Summarization; and more.

  5. Research Focus: May 13, 2024

    Research Focus: Week of May 13, 2024 

    May 15, 2024

    Welcome to Research Focus, a series of blog posts that highlights notable publications, events, code/datasets, new hires and other milestones from across the research community at Microsoft. Large language models (LLMs) have shown remarkable performance in generating text similar to that created by people, proving…

  6. Research Focus April 15, 2024

    Research Focus: Week of April 15, 2024 

    April 17, 2024

    In this issue: New research on appropriate reliance on generative AI; Power management opportunities for LLMs in the cloud; LLMLingua-2 improves task-agnostic prompt compression; Enhancing COMET to embrace under-resourced African languages:

  7. Research Focus April 1, 2024

    Research Focus: Week of April 1, 2024 

    April 3, 2024

    In this issue: New research helps COMET embrace African languages; FeatUp improves deep features, a computer vision research cornerstone; LLMs in the Imaginarium: Tool Learning through Simulated Trial and Error; Benchmarking LLMs across languages and more.

  8. flowchart showing how AI learns from user interactions

    Learning from interaction with Microsoft Copilot (web) 

    March 27, 2024

    Microsoft researchers are taking a comprehensive and dynamic approach to help Copilot (web) continuously learn from interaction and feedback, improving the AI system and making it increasingly useful for consumers. Learn more.

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