Observed Signal · Mar 4, 2026 · Shutdown · Source: Trending Topics · Impact: 2/5 · Sentiment: Negative
Mostly AI Shuts Down After Raising $31M
Mostly AI, a Vienna-based startup specializing in synthetic data, is ceasing operations after raising over $31 million in total funding. CEO Tobias Hann confirmed the decision and denied bankruptcy rumors. The company cited the declining relevance of data privacy in global markets and increasing deregulation pressure as key factors. Founded in 2017 by three data scientists, Mostly AI was a pioneer in AI-generated synthetic data for privacy-compliant data sharing. Its most significant funding was a $25 million Series B in 2022 from investors including Citi Ventures, 42CAP, and Earlybird. Attempts to sell the company in late 2025 reportedly failed.
Closure of a notable synthetic data startup highlights the challenging market for privacy-compliant data solutions, which are relevant to advertising technology.
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Key Takeaways & Evidence Grounding
- Mostly AI, a Vienna-based synthetic data startup, is ceasing operations after more than eight years.
- Total investments exceeded $31 million, with a $25 million Series B in 2022.
- CEO Tobias Hann announced the shutdown and denied bankruptcy rumors.
- Founders include Michael Platzer, Klaudius Kalcher, and Roland Boubela.
- Citi Ventures, 42CAP, and Earlybird were key investors in the Series B round.
Connected Companies & Entities
3 Entities mapped“The Vienna-based AI startup specializing in synthetic data is ceasing operations, according to CEO Tobias Hann....”
“Munich-based investor 42CAP participated in Mostly AI's Series B round....”
“Berlin-based investor Earlybird participated in Mostly AI's Series B round....”
Ontology Mapping & Concepts
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