Licences and credits
Last updated 23 September 2026
Voice and sound
- Session and article voices are synthetic, generated with ElevenLabs.
- Tone beds and ambient layers are generated by EightStars.
Writing
Session scripts are written by Claude (Anthropic) on Google Cloud Vertex AI, from your answers, and checked against our content rules.
Sources
How it works cites its sources in each article. The 1983 Gateway assessment is available from the CIA FOIA reading room.
Open-source software
Gateway Manifest is built with open-source software. Thank you to the people who maintain it.
- Next.js and React, MIT licence
- Tailwind CSS, MIT licence
- Lucide icons, ISC licence
- Serwist, MIT licence
- MDX, MIT licence
- Hono, MIT licence
- Postgres.js, Unlicense
- Zod, MIT licence
- Inter Tight typeface, SIL Open Font License 1.1
- FFmpeg, LGPL 2.1