Thinking Line

Thinking Line is an AI-powered tool for generating hand-drawn whiteboard explainer videos from a text prompt. The page describes a studio for generating and editing lessons, native animated scenes such as bar charts, pie charts, graphs and cycles that draw themselves, a Video to Doodle feature for multi-scene explainer videos with narration and hand-drawn animations, and a developer API with a WebSocket generation endpoint, category videos and a voice list. The page's meta description also mentions editable SVG generation. The site lists Free, Pro ($29/mo) and Enterprise (custom) plans, and mentions a Newv10 doodle engine with smoother strokes. Example topics include science, finance, mathematics, biology, history, corporate safety training and cartoon storytelling.

Key features

• Single-prompt generation of hand-drawn, narrated explainer videos
• Studio to generate and edit content in one place
• Native animated scenes including bar charts, pie charts, graphs and cycles
• Video to Doodle: multi-scene explainer videos with narration and hand-drawn animations
• Voice library accessible via /voices with per-request voice selection
• Category videos endpoint for curated training, history and cartoon demos
• Developer API with WebSocket generation endpoint
• Newv10 doodle engine with smoother strokes and no boxed labels
• Editable SVG generation (per meta description)

Best suited for

• Educators creating lesson explainer videos
• Creators producing narrated explainer content
• Developers integrating AI video generation via API
• Corporate trainers creating safety and training videos

Pricing

Free plan at $0 (4 videos per month, standard voices, 720p, watermarked exports); Pro at $29/mo (30 videos per month, premium AI voices with cloning, 4K export, no watermark, commercial usage rights); Enterprise at custom pricing (API access, dedicated support, custom branding, SSO & security)