Introducing Runway Builders
March 31, 2026
by Michelle Kwon
Introducing Runway Builders
We're giving Seed to Series C startups complementary API credits and early access to build with Runway Characters.

Today we are introducing Runway Builders, a program for early-stage startups building the next generation of products with generative video and real-time conversational AI.

Runway Builders gives Seed to Series C startups complimentary API credits to start building immediately, in close partnership with our team.

Runway Builders is already live with a founding cohort of startups — including Cartesia, MSCHF, Oasys Health, Spara, Subject and Supersonik — building across customer experience, synthetic media and interactive AI. We're now opening the program more broadly.

We're launching Runway Builders alongside the release of Runway Characters, Runway's real-time video agent API powered by GWM-1, our General World Model. Characters can have any appearance and any visual style, with full control over voice, personality, knowledge and actions – you can generate expressive digital personas from a single image, with zero fine-tuning required.

Use cases Runway Builders and enterprises are already exploring: AI customer support agents, interactive brand characters, personalized onboarding experiences, real-time sales assistants and synthetic media tools.

Runway Builders receive:

To apply to join Runway Builders, click here.