Source: https://seerepo.com/compare/calesthio/OpenMontage/vs/langflow-ai/langflow
Markdown source: https://seerepo.com/compare/calesthio/OpenMontage/vs/langflow-ai/langflow.md
Description: OpenMontage and langflow share 8 technologies: FastAPI, uvicorn, React, Google, OpenAI, pillow, jsonschema, and Pydantic. Both are written in Python.

# OpenMontage vs langflow

OpenMontage and langflow share 8 technologies: FastAPI, uvicorn, React, Google, OpenAI, pillow, jsonschema, and Pydantic. Both are written in Python.

- [calesthio/OpenMontage](https://seerepo.com/r/calesthio/OpenMontage): World's first open-source, agentic video production system. 12 production pipelines, 100+ tools, 700+ agent skill and production-knowledge files. Turn your AI coding assistant into a full video production studio.
- [langflow-ai/langflow](https://seerepo.com/r/langflow-ai/langflow): Langflow is a powerful tool for building and deploying AI-powered agents and workflows.

## What they share and what sets them apart

- In common: FastAPI, uvicorn, React, Google, OpenAI, pillow, jsonschema, Pydantic
- Only in OpenMontage: torchaudio, torchvision, torch, remotion
- Only in langflow: pyarrow, oracledb, Redis, AIOHTTP, Vite, react-router-dom, Rich, SQLAlchemy, cryptography, pyjwt, bcrypt, google-auth-oauthlib, firecrawl-py, LangChain, langchain-classic, MCP, exa-py, defusedxml, pypdf, markitdown, msgspec, validators, psutil, loguru, boto3, Tailwind CSS, class-variance-authority, tailwind-merge, xyflow, Radix UI, ag-grid-community, Framer, react-hotkeys-hook, use-stick-to-bottom, react-syntax-highlighter, ace-builds, Headless UI, cmdk, elkjs, react-day-picker, react-error-boundary, react-sortablejs, reactflow, Lucide, react-icons, @radix-ui/react-icons, react-markdown, remark-gfm, dompurify, rehype-sanitize, rehype-raw

## Side by side

| | OpenMontage | langflow |
|---|---|---|
| Size | 174,045 lines written, 73 code files | 1,446,517 lines written, 3,937 code files |
| Who writes it | 21% of its commits signed by AI. With Claude Code and Codex | 1.5% of its commits signed by AI. With Claude Code, CodeRabbit, GitHub Copilot, Cursor, Codex, and Warp |
| Activity | Last push November 3, 2026, 352 commits, 76,502 stars | Last push November 4, 2026, 17,600 commits, 156,316 stars |
| Tests | 156 test files. 26% of its code files have a test that imports them | 3,083 test files. 35.1% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, OpenMontage or langflow?

langflow, with 1,446,517 lines written; OpenMontage has 174,045.

The proof: [langflow-ai/langflow's code at commit 60999cc](https://github.com/langflow-ai/langflow/tree/60999cc9a7350e44dde3ef641baae864e10861f0)

### Which has more GitHub stars, OpenMontage or langflow?

langflow, with 156,316 stars; OpenMontage has 76,502.

The proof: [langflow-ai/langflow on GitHub](https://github.com/langflow-ai/langflow)

### Which has more tests, OpenMontage or langflow?

langflow, with 3,083 test files; OpenMontage has 156.

The proof: [langflow-ai/langflow's code at commit 60999cc](https://github.com/langflow-ai/langflow/tree/60999cc9a7350e44dde3ef641baae864e10861f0)

### Which was updated more recently, OpenMontage or langflow?

langflow: its last push was on November 4, 2026, and OpenMontage's on November 3, 2026.

The proof: [langflow-ai/langflow's commits on GitHub](https://github.com/langflow-ai/langflow/commits)

### Which has more commits signed by AI, OpenMontage or langflow?

OpenMontage: an AI signed 21% of its commits, with Claude Code and Codex; in langflow, 1.5%.

The proof: [the commits each tool signed in calesthio/OpenMontage](https://seerepo.com/r/calesthio/OpenMontage/ai)

## Sources

- calesthio/OpenMontage: Read on November 4, 2026, at commit d21f5d4 (https://github.com/calesthio/OpenMontage/tree/d21f5d4eaa08422b09c7091757a05affcbabb35b)
- langflow-ai/langflow: Read on November 4, 2026, at commit 60999cc (https://github.com/langflow-ai/langflow/tree/60999cc9a7350e44dde3ef641baae864e10861f0)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.