Tinfoil

Tinfoil's blog index surfaces a steady stream of 2026 engineering posts describing work on its private-inference stack. The most recent item, dated July 14, 2026, is "Architecting secure prompt caching," which explains how Tinfoil implemented prompt caching for its Inference API without compromising privacy by using cl Earlier 2026 entries on the index include a June 23, 2026 post by Verma and Jules Drean presenting benchmarks of NVIDIA Confidential Computing overhead on Blackwell for inference and training; a March 10, 2026 launch post for Tinfoil Containers, which lets customers run Docker images, training pipelines, or proprietary

Mandos' September 5, 2026 company profile reports that Tinfoil has raised $7.75M in priced equity across two priced rounds, with its most recent priced round being a Seed in July 2025, and currently has about 6 employees. The profile also lists a specific Tinfoil product — Tinfoil GPT-OSS Safeguard 120B — described as The same profile records two discrete March 2026 events: the launch of Tinfoil Containers as a secure AI service, and a partnership / security audit collaboration with Trail of Bits. These two events, together with the GPT-OSS Safeguard 120B product entry, constitute the freshest concrete provider-side milestones in th

Tekedia Capital announced its investment in Tinfoil on May 29, 2026, framing the round around Tinfoil's mission to enable AI workloads to run securely and provably privately without forcing organizations to rewrite existing applications. Tekedia highlighted that Tinfoil combines open-source AI models with secure enclav Tekedia positioned Tinfoil as a complement to its earlier-announced investment in Didit, arguing that trust infrastructure is necessary but not sufficient — once trust is established, privacy-preserving compute becomes the next layer enterprises require to diffuse AI into business, government, healthcare, and finance.

Dealroom's company profile corroborates Tinfoil.sh as a San Francisco-based, 2024-founded confidential AI infrastructure company that spun out of MIT in January 2024 and went through Y Combinator (X25 batch) in May 2025 with a $125K seed round. A subsequent Tekedia Capital investment is listed as "May 2026 — Early VC" Dealroom describes Tinfoil as offering end-to-end encrypted AI infrastructure with secure aggregation and Prometheus-compatible metrics for privacy-focused analytics, served via an API compatible with OpenAI's Chat Completions API to enable drop-in integration. Key personnel include advisors and engineers with experien