LangChainvsLangflow
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
LangChain
LangChain · Agent framework
OSSMCP
Panel
7.61 spec wins
- Reliability
- 7.2
- Usefulness
- 7.5
- Cost
- 7.5
- Longevity
- 8.2
“145,000 stars and 916 watchers, which is about the ratio of people who install it to people who read the changelog.”
Langflow
Langflow · Agent framework
OSSMCP
Panel
7.52 spec wins
- Reliability
- 6.3
- Usefulness
- 7.0
- Cost
- 8.5
- Longevity
- 8.0
“Shipping since February 2023, which in agent-framework years qualifies it for a pension and a plaque.”
Spec by spec
| Spec | LangChain | Langflow |
|---|---|---|
| Architecture | ||
| Category | Agent framework | Agent framework |
| Runs | local, cloud | local, cloud |
| Platforms | macos, linux, windows | macos, linux, windows, web |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | Yes | Yes |
| MCP server | No | Yes |
| Capabilities | ||
| Runs terminal commands | No | No |
| Multi-file edits | No | No |
| Git operations | No | No |
| Browser control | No | No |
| Sandboxed execution | No | No |
| Multi-agent orchestration | Yes | Yes |
| Headless / CI mode | Yes | No |
| Models | ||
| Backbone | OpenAI, Anthropic, Google, AWS Bedrock, Azure, OpenRouter, Fireworks, HuggingFace, Ollama | any |
| Bring your own model | Yes | Yes |
| Local models | Yes | Yes |
| Cost | ||
| Pricing model | byok | free |
| Starts at | $0/mo | $0/mo |
| Free tier | Yes | Yes |
| Bring your own key | Yes | Yes |
| Openness | ||
| Open source | Yes | Yes |
| License | MIT | MIT |
| GitHub stars | 147,373 | 155,446 |
Which one would each critic pick
| Critic | LangChain | Langflow | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 7.8 | 7.5 | LangChain — Pick LangChain if you want a working agent in a dozen lines and the freedom to swap the model with a string; pick OpenAI Agents SDK if you will only ever use one vendor and want less surface. |
| El Crítico | 7.3 | 6.8 | LangChain — Three package layers, langchain-core, langchain and a provider package per vendor installed as an extra, so the dependency matrix is where a careful engineer expects the breakage to live. |
| El Profesor | 7.3 | 7.5 | Langflow — The visual layer sits over a Python runtime, so the graph is executed rather than transpiled, and the same graph can be exposed as tools to external clients over MCP. |
| La Inversora | 7.8 | 7.5 | LangChain — The library is free, the traces are metered: 5k a month on Developer, 10k on Plus, then pay-as-you-go, with deployment compute billed in LCUs at $1.50 apiece. |
| La Jefa | 7.0 | 6.8 | LangChain — The library is $0 for sixty engineers; the platform is $39 a seat on Plus, $2,340 a month, and custom SSO, RBAC and self-hosting sit in Enterprise at a price you ask for. |
| El Hacker | 8.5 | 8.8 | Langflow — MIT, one docker run to have it on localhost, local model endpoints supported, and it acts as both an MCP client and an MCP server, which almost nothing else does. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.