FluevsLangflow
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
Flue
Astro Technology Company · Agent framework
OSSMCP
Panel
7.32 spec wins
- Reliability
- 7.2
- Usefulness
- 7.0
- Cost
- 8.2
- Longevity
- 6.8
“Turns agent harness design into standard TypeScript hooks, assuming you trust React-style syntax to safely run your sandbox.”
Langflow
Langflow · Agent framework
OSSMCP
Panel
7.53 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 | Flue | Langflow |
|---|---|---|
| Architecture | ||
| Category | Agent framework | Agent framework |
| Runs | local, cloud, sandbox | local, cloud |
| Platforms | linux, macos, 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 | Yes | 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 | anthropic/claude-sonnet-4-6 | any |
| Bring your own model | Yes | Yes |
| Local models | No | Yes |
| Cost | ||
| Pricing model | free | free |
| Starts at | n/a | $0/mo |
| Free tier | Yes | Yes |
| Bring your own key | Yes | Yes |
| Openness | ||
| Open source | Yes | Yes |
| License | unknown | MIT |
| GitHub stars | 8,415 | 155,446 |
Which one would each critic pick
| Critic | Flue | Langflow | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 7.8 | 7.5 | Flue — Pick Flue if you want a TypeScript-native framework to build durable, sandboxed multi-agent systems. |
| El Crítico | 7.5 | 6.8 | Flue — Flue provides a declarative TypeScript harness for teams building durable, tool-using agents across local and serverless runtimes. |
| El Profesor | 6.5 | 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 | 8.3 | 7.5 | Flue — Adopt Flue for TypeScript agent orchestration if you want solid framework ergonomics without vendor lock-in. |
| La Jefa | 6.8 | 6.8 | no preference |
| El Hacker | 7.0 | 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.