SWE-agent is completely free with all essential features included. No paid tiers offered, making it perfect for budget-conscious users.
SWE-agent is an open-source autonomous coding agent created by researchers at Princeton University and Stanford University. It was introduced in a NeurIPS 2024 paper and takes a GitHub issue as input, then uses an LLM to navigate the repository, edit files, and run tests to propose a fix. The same system, configured as EnIGMA, can also tackle offensive cybersecurity challenges.
SWE-agent is model-agnostic. It officially supports GPT-4o and other OpenAI models, Anthropic's Claude family (including Sonnet and Opus), DeepSeek, and any OpenAI-compatible endpoint — which means you can point it at local models served via Ollama, vLLM, or LM Studio. Model selection is handled in the agent config file.
Yes. The SWE-agent codebase is fully open-source under the MIT license and free to self-host. The only costs are the LLM API fees you incur when using commercial models like GPT-4o or Claude; running it with a local model is free apart from compute.
Devin is a closed, hosted autonomous agent with a managed UI and subscription pricing; Cursor is an interactive IDE with AI assistance. SWE-agent is an open-source, self-hostable agent framework focused on autonomously resolving issues end-to-end. It is research-grade software — you bring your own model and infrastructure, and you get full transparency into the agent's prompts, tools, and trajectories.
SWE-agent executes all commands inside Docker containers via its SWE-ReX runtime, which isolates file and network access from the host. For additional safety on private repos, you can use ephemeral sandboxes on Modal or AWS, and you should always review generated patches before merging — especially for long autonomous runs.
It's completely free — no credit card required.
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Last verified March 2026