Prime Agent

What is Prime Agent?

Prime Agent, from Prime Intellect, is a coding and research agent released as open source, made for general work and for tasks that run a long time. It rests on a Recursive Language Model design, where context is held as variables and sub-agents are called like functions inside a persistent Python REPL. A second idea, the Continual Harness, keeps prompts, memories, skill descriptions and sub-agent specs as durable state that the /refine command can adjust in small, recorded steps with rollback. Sessions are backed by a daemon, so agents keep running after the terminal closes and can be reattached later, and running agents can message one another. Goals, heartbeats, schedules and a bounded autonomous mode help work continue across turns. You install it with a one-line script on macOS or Linux or a PowerShell command on Windows, then sign in with a subscription or API-key provider. The code is released under the MIT License, so there is no price.

Use cases

• Run long coding tasks in the background
• Automate research and evaluation work
• Spawn sub-agents for parallel jobs
• Turn recurring workflows into skills
• Schedule agent check-ins
• Experiment with recursive language models

Who it's for

• AI researchers
• Developers
• ML engineers

Why use Prime Agent

• Sub-agents split a large job into smaller ones that run in parallel or in the background.
• Sessions keep running after the terminal detaches, so a long evaluation does not die with your SSH connection.
• Refinements are recorded and reversible, which keeps changes to the agent's own prompts and memories reviewable.
• Skills are plain Python packages, so a recurring workflow can be versioned and shared like other code.
• The MIT License lets you read and modify the harness.

Prime Agent features

• Persistent Python REPL as the built-in model tool
• rlm.spawn sub-agents for parallel or background work
• /refine command with recorded snapshots and rollback
• Skills packaged as importable Python packages
• Daemon-backed sessions that survive terminal disconnects
• Direct messaging between running agents
• Persistent goals with /goal across turns
• Heartbeats and scheduled runs
• Bounded autonomous mode with token, turn and time budgets
• Automatic context compaction with adjustable threshold

Prime Agent integrations

• Slack
• tmux
• Prime Intellect Verifiers
• PRIME-RL

How to get started with Prime Agent

1. Install with the one-line shell script, or the PowerShell command on Windows.
2. Change into the repository you want to work on and run prime-agent.
3. On first launch run /login and pick a subscription or API-key provider.
4. Describe the task; the agent works through code in its Python REPL and can spawn sub-agents.
5. Detach when you like, reattach with prime-agent attach, and run /refine to save lessons.

Prime Agent limitations

• Runs model-generated Python and commands with your user permissions
• Worker and kernel processes are not a security sandbox
• Works in the current directory, so use a disposable clone or clean worktree
• Needs a subscription or API-key provider login on first launch

Prime Agent pricing

Prime Agent is open source, so you can use and self-host it for free.

Prices can change and may vary by country or exclude tax. Check the official pricing page.

Prime Agent alternatives

The main Prime Agent alternatives listed on Debuly are OpenHands, Claude Code, goose, Pi, SWE-agent and Amp. The table compares pricing and platforms; order is A–Z.

1. 

   Amp

   Coding agent that runs in hosted cloud orbs or on your own machine, with a free Hobby tier and a $20 monthly plan.

   CodingAutomation and agentsDeveloper platforms
   FreemiumVisit Amp (official site)
2. 

   Claude Code

   Anthropic's coding agent that fixes bugs, writes tests and runs migrations from your terminal, IDE, desktop app, web or Slack.

   CodingAutomation and agentsDeveloper platforms
   PaidVisit Claude Code (official site)
3. 

   goose

   Open source AI agent that runs on your machine as a desktop app, CLI or API and connects to tools through MCP extensions.

   Automation and agentsCodingDeveloper platforms
   Open sourceVisit goose (official site)
4. 

   OpenHands

   Open-source AI coding agent platform with a free Agent Canvas, a Teams plan, and self-hosted Enterprise control

   CodingAutomation and agentsDeveloper platforms
   FreemiumVisit OpenHands (official site)
5. 

   Pi

   Open-source, MIT-licensed terminal coding agent and TypeScript toolkit you extend with skills, extensions, prompt templates and themes.

   Developer platformsCodingAutomation and agents
   Open sourceVisit Pi (official site)
6. SA

   SWE-agent

   Research agent from Princeton and Stanford that lets a language model fix GitHub issues and find vulnerabilities.

   CodingAutomation and agentsDeveloper platforms
   Open sourceVisit SWE-agent (official site)

Prime Agent FAQ

Sources & verification

Facts on this page come from the official sources below, each with the date we read it. Written by Debuly; the vendor did not review this page.

Image credits

• Logo: from avatars.githubusercontent.com · fetched 24 Oct 2026 · Vendor trademark, used only to identify the product; removed on request
• Cover: none collected yet, so a generated tile is shown.

Spot an error? Report an issue with this listing. We also remove a logo or image on the owner's request.