calesthio
Calesthio is an individual open-source AI-tools creator whose flagship project, OpenMontage, turns an AI coding assistant into a full video-production studio. OpenMontage is designed to handle research, scripting, asset generation, editing, composition and review through an instruction-driven, agent-first workflow.
At a Glance
- Developers and platform teams
- Independent filmmakers and video creators
- Marketing and product teams
- Open-source and agentic-AI developers
- +1 more
AI Tools by calesthio
(1)
OpenMontage
Agentic Video Production Pipeline
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Latest News
Merged production fixes including CJK-aware captions and caption styling, TalkingHead asset resolution, stock-source transport-error handling and video-understanding sampling fixes.
Added Seedance 2.5 prompt contract and technique-reference documentation.
Added documentary and 3D-world showcases to the README.
Added Gemini Omni, Seedance 2.5 and MiniMax H3 routes, plus a production 3D-world pipeline and Atlas Cloud media gateway integrations.
Products & Services
AGPLv3 open-source, instruction-driven and AI-agent-orchestrated video production system. It provides 12 production pipelines, 100+ tools and 700+ agent-skill/production-knowledge files, with artifacts and project formats kept as plain files.
A desktop/web-style production board over the same engine, with storyboard, script, approvals, renders, production chat, scene cards, decision log and library. The site says Studio is free for everyone, private alpha, with beta cohorts forthcoming.
Local living storyboard and production board that derives status from project files, displays pipeline stages, scripts, scene cards, provider decisions and costs, and pauses generation at human approval gates.
Market Position
OpenMontage positions itself as an open-source, local-first, agent-native alternative to hosted subscription video generators and conventional editors: it runs inside Claude Code, Codex or OpenCode, exposes the production as editable artifacts, supports real footage as well as generated media, and puts human approval and cost governance before generation spend.
Leadership
Founders
Calesthio
Independent open-source AI-assisted and agentic-tools creator; the GitHub profile identifies Calesthio as the creator of OpenMontage and lists Microsoft and Seattle, Washington.
Executive Team
Calesthio
Creator and maintainer
Independent creator of OpenMontage and other open-source AI/agentic tools; GitHub profile says Calesthio is building open-source AI Assisted and Agentic Tools and lists Microsoft.
Business Model
Revenue Model
The open-source engine and local work are free; OpenMontage Studio is described as free for everyone. The site says users pay only for generation through OpenMontage’s cloud, with the price shown before approval; users may also bring their own agents, keys and providers. The repository documents provider/API usage costs and optional third-party services.
Pricing Tiers
AGPLv3 engine; local work, composition and rendering are not metered, capped or watermarked, according to the site.
Studio is described as free for everyone, but the site terms say features and credit costs are illustrative and Studio is not generally available yet.
Generation is charged through the cloud and proposed costs are shown before approval. The site gives illustrative examples such as 15 credits for generated music, 5 credits for narration and 125 credits for a 5-second generated clip.
Target Markets
- Developers and platform teams
- Independent filmmakers and video creators
- Marketing and product teams
- Open-source and agentic-AI developers
- Teams needing reproducible, editable and provenance-aware video production
- Product and software launch films
- Developer and platform-team explainers
- Documentary montages using real footage
- Animated shorts and cinematic trailers
- Product advertisements and product films
- Business/news/finance explainers
- The site says a hand-picked private-alpha crew is shipping real launch videos; it does not name customers.