The archive · Developer & Business Tools · Product decision · 2025–2026
Golpo bets AI video's future is explanation, not spectacle — $4.1M seed, YC S25
Brothers Shraman and Shreyas Kar build AI whiteboard explainer videos from documents; Launch HN 116 points, $4.1M oversubscribed seed, YC S25.
Golpo
What the business is
Golpo generates fully produced whiteboard explainer videos — Khan Academy or RSA Animate style — from a prompt or document, with narration, time-aligned graphics, prompt-based editing, and support for 50+ languages.
Starting capital：$4.1M seed led by BNVT Capital (2025-10-20)
How it started
Shraman (19) and Shreyas (20) Kar, brothers and Stanford CS students, watched Sora and Veo-class models produce flashy scenes that could not explain a 10-step workflow, spell words correctly, or keep a diagram consistent. They saw training, onboarding and education as an underserved market, dropped out of Stanford, founded Golpo in 2025 and joined Y Combinator's Summer 2025 batch.
What happened
The hard part was the engine. First they fine-tuned a language model to emit Manim Python animation scripts, but the generated code broke on imports and timing. Then they tried a custom diffusion video model — incoherent past about 30 seconds, no control over content, and too expensive to scale. They settled on training a reinforcement learning agent to 'draw' whiteboard strokes step-by-step for clear, human-like explanations. Golpo launched on Hacker News 2025-08-13 (116 points, 93 comments). In October 2025 it announced a $4.1M heavily oversubscribed seed led by BNVT Capital, with Emergence Capital, Y Combinator and Afore Capital; Golpo 2.0 added frame-by-frame prompt editing and videos from 15 seconds to 30 minutes via API.
How it ended up
Still live and expanding: school districts, corporate L&D teams, sales and marketing teams are named customer groups in the company's materials; Golpo 2.0 with frame-by-frame editing shipped in February 2026.
Background
Golpo is an AI video company founded by brothers Shraman (19) and Shreyas (20) Kar, who dropped out of Stanford's computer science program to build it. Its bet: AI video tools were optimizing for cinematic spectacle while failing at the jobs people actually need — explaining a workflow, teaching a concept, onboarding an employee. So Golpo built a generator for whiteboard explainer videos, the Khan Academy and RSA Animate format, from a prompt or document.
The engineering bet was as distinctive as the format. The founders first fine-tuned a language model to emit Manim animation scripts, then tried a custom diffusion model, and rejected both as brittle, uncontrollable and expensive. They ended up training a reinforcement learning agent to 'draw' whiteboard strokes step-by-step, which produced coherent, time-aligned graphics with narration. Golpo launched on Hacker News in August 2025 (116 points, 93 comments) and joined YC's S25 batch.
In October 2025 Golpo announced a $4.1M heavily oversubscribed seed led by BNVT Capital with Emergence Capital, Y Combinator and Afore Capital. Golpo 2.0 (February 2026) added frame-by-frame prompt editing and videos up to 30 minutes via API, with customers named across school districts, corporate L&D, sales and marketing. As of early 2026 the company is live and using the round to expand the team and enterprise integrations.
What has to be true
- Sora and Veo optimized for cinematic one-shot clips; Golpo bet the underserved market was practical communication — training, education and onboarding — where clarity and accuracy matter.
- The whiteboard explainer is a format the market already understands, so Golpo competed on a narrower, clearer promise instead of head-on against frontier video labs.
- The engine choice (an RL agent drawing strokes, plus frame-by-frame editing) turned AI video from a one-shot lottery into a controllable workflow.
- Two brothers with a shared build history and a documented technical failure path (Manim codegen, then diffusion) made the pivot to whiteboard drawing credible.
What can be applied
Pick the format users already understand: whiteboard explainers let Golpo compete on clarity instead of spectacle, and frame-by-frame editing turned one-shot AI video into a controllable workflow.
Aftermath
As of 2026-02-23, Golpo is live and scaling: the platform generates whiteboard explainer videos from prompts or documents in 50+ languages, and Golpo 2.0 adds frame-by-frame prompt editing plus videos from 15 seconds to 30 minutes via API. The $4.1M seed funds team expansion, model improvements and enterprise integrations. Company materials name school districts, corporate L&D, sales and marketing, and internal communications as customer groups, positioning the product as the practical alternative to cinematic AI video. The founders remain focused on education and training use cases.
Sources
- Launch YC: Golpo — Create Whiteboard Explainer Videos with AI from a Prompt or Document
- Brothers, 19 and 20, Stanford dropouts, raise $4.1M in oversubscribed seed round to build Golpo AI (GlobeNewswire)
- Launch HN: Golpo (YC S25) — AI-generated explainer videos
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