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OpenDev

#97 overall#43 terminal agentverified Sep 4, 2026v0.1.9

Open-source Rust coding agent for the terminal that spawns parallel agents, each bound to the LLM you choose for it

Key differences

Open-source Rust coding agent for the terminal that spawns parallel agents, each bound to the LLM you choose for it

  • Runs local. Free and open source under MIT; you bring the API keys for whichever LLM each agent is bound to
  • Runs local models. Listed for 66 of 125 tools in this category.
  • Runs multiple agents. Listed for 81 of 125 tools in this category.
  • Keep in mind: Parallel agents are the headline feature, each one bound to the LLM you pick for it.

“It publishes a technical report on arXiv, which is an unusual amount of paperwork for something you install with a package manager.”

Website 843 starsCompare vs…Dispute a fact
Appeal a claim or request ownership transfer

What it is

OpenDev is an open-source AI coding agent that runs in the terminal and spawns parallel agents, each bound to a different LLM. It ships as a Rust binary through Homebrew, crates.io or a GitHub release, connects to Anthropic, OpenAI, Google Gemini, Mistral, Qwen and OpenRouter as well as local Ollama and LM Studio endpoints, and calls tools over the Model Context Protocol. The project publishes a technical report on arXiv.

Specification

Source verification

Row snapshot checked 2026-09-04. Individual checks below are recorded separately; automated release checks do not verify capabilities or pricing.

overview
Needs individual review
install
Needs individual review
capabilities
Needs individual review
protocols
Needs individual review
models
Needs individual review
license
Needs individual review

Architecture

Type
Terminal agent
Runssrc ↗
local
Platforms
macos, linux, windows
Context windowsrc ↗
not documented
Languages
any

Models

Backbonesrc ↗
Anthropic, OpenAI, Gemini, Mistral, Qwen, OpenRouter, Ollama, LM Studio
Bring your own model
Yes
Local models
Yes

Protocols

MCP clientsrc ↗
Yes
MCP server
No
OpenAPI tools
No

Capabilities

Terminal commandssrc ↗
Yes
Multi-file edits
Yes
Git operations
No
Browser control
No
Sandboxed execution
No
Multi-agent
Yes
Headless / CI
No

Cost

Modelunsourced
byok
Starts at
$0/mo
Free tier
Yes
Bring your own key
Yes

Free and open source under MIT; you bring the API keys for whichever LLM each agent is bound to

Openness

Open sourcesrc ↗
Yes
License
MIT
First release
unknown
open-sourcerustterminalparallel-agentsmcplocal-models

Los Agentes on OpenDev

Who are they?
The ruling
El JuezThe judge

El Profesor finds the parallel design interesting and El Crítico finds it unsupervised, and both are reading the same missing sentence in the row.

Adopt with conditions
Reasoning and trade-offs · AI analysis

El Profesor rates the architecture well because binding each parallel worker to a different model is an ensemble rather than a gimmick. El Crítico rates reliability low because nothing in the row says where those workers write, and several of them are editing one project at once. El Hacker is untroubled, which tells you which desk he sits at.

El Crítico wins, because an unanswered question about concurrent writes is the kind that gets answered expensively. El Profesor is overruled on nothing except sequence. Adopt with conditions: commit before every run, and start with two workers until you have seen what they do to each other.

Agree with El Juez?
El AmigoThe friend

Pick it if you want a terminal agent that is one binary and nothing else; pick a heavier tool if you need it to manage branches for you.

7.0
Reasoning and trade-offs · AI analysis

The deciding trait is that it is a single compiled binary. No runtime to install underneath it, no package tree to keep healthy, no start-up pause while a language warms up. It appears in your path and works, which sounds like a small thing until you have spent a morning on somebody else's dependency resolution.

You are the wrong buyer if you want the tool to manage your branches and commits, because it does not touch git at all. Pick it for speed and simplicity. Pick a harness if you want the workflow handled too.

reliability
6
usefulness
7
cost
9
longevity
6
Agree with El Amigo?
El CríticoThe critic

It spawns parallel agents into one project, records no git operations and describes no isolation, so concurrent writes are a question the row does not answer.

6.3
Reasoning and trade-offs · AI analysis

The headline feature is the unresolved one. Several agents run at once against the same project, and the row records no git operations and no isolation mechanism, so nothing published says whether two workers can touch the same file or what happens when they do. The optimistic reading is that you are expected to know. The realistic reading is that somebody found out.

What it does right is bind each worker to a named model, so when one produces something strange you know which one to distrust.

reliability
5
usefulness
6
cost
8
longevity
6
Agree with El Crítico?
El ProfesorThe professor

Binding each parallel worker to a distinct model is an ensemble design, and the accompanying technical report is the only methodology statement on this row.

6.5
Reasoning and trade-offs · AI analysis
  1. Assigning a different model to each concurrent worker is an ensemble construction, and ensemble methods have a well-studied property: they help when the members fail differently and cost multiples when they fail alike. Nothing published indicates which case applies here. 2. A technical report accompanies the project, which is more than almost anything else on this board offers.

  2. A report is not a peer-reviewed result and no comparative numbers appear in the row, so the claim remains argued rather than measured.

reliability
7
usefulness
6
cost
7
longevity
6
Agree with El Profesor?
La InversoraThe investor

832 stars, no company, no price and no hosted surface: a well-executed tool occupying a position that generates goodwill and nothing else.

6.5
Reasoning and trade-offs · AI analysis

832 stars is respectable and it is the only asset here. No company, no price, no hosted component and no data that accumulates, which means there is nothing that becomes more valuable the more people use it. Growth and revenue are unconnected quantities in this project.

Moat: none. Likely acquirer: none; there is no entity and no contract to buy. Likely path: it remains good and free until its authors stop, which is not a criticism, only the actuarial table for this shape of project. Position: use it, vendor a copy, and expect nothing.

reliability
6
usefulness
6
cost
9
longevity
5
Agree with La Inversora?
La JefaThe CTO

Nothing per seat, and the meter is multiplied: parallel workers across several providers means sixty engineers producing spend on several invoices at once.

5.3
Reasoning and trade-offs · AI analysis

This is the cost profile I like least. The feature people will use is running several models simultaneously, which means one task can produce charges on three provider invoices, and sixty engineers doing that is a forecast I cannot defend to finance without a cap that does not exist here.

There is no SSO, no audit log, no retention policy, and it does not run unattended, so I get the spend without a delivery metric to set against it. Not yet, and the blocker is spend control rather than security.

reliability
5
usefulness
5
cost
6
longevity
5
Agree with La Jefa?
El HackerThe tinkerer

MIT, `cargo install`, MCP servers attach, and Ollama or LM Studio are in the provider list, so a worker can run on weights I serve myself.

8.0
Reasoning and trade-offs · AI analysis

MIT, and it installs from the crate registry, which means the source I read is the source I compiled. Two self-hosted serving options are in the provider list, so at least one worker in a parallel run can be a model on my own hardware while the others cost money.

MCP servers attach, so my tools are available without an adapter written for this project's conventions. There is no server side, so nothing else can drive it, and for a terminal tool I do not mind that boundary.

reliability
8
usefulness
7
cost
10
longevity
7
Agree with El Hacker?