Refact.ai: An Open-Source Windsurf Alternative for Self-Hosted AI Coding

Refact.ai is an open-source AI coding agent developed by SmallCloud. It provides autonomous task execution, in-IDE chat, and real-time autocomplete that integrates directly into your existing IDE. As a Windsurf alternative, it is best suited for teams and individuals who need full control over their data through self-hosted deployment and open-source flexibility.

Refact.ai vs. Windsurf: Quick Comparison

Key Strengths

• Self-hosted and open-source: Refact.ai offers a self-hosting path via its open-source repository, meaning enterprise teams can deploy it on private infrastructure with complete code privacy and zero telemetry leaving the environment. This is a rare combination among AI coding assistants, most of which are cloud-only.
• Autonomous AI agent: The Refact.ai Agent can plan, execute, and deploy code changes end-to-end. It integrates with GitHub, databases, CI/CD pipelines, and external tools, and shows step-by-step reasoning so developers can review and control each action before it lands.
• Broad IDE coverage: Refact.ai supports VS Code, JetBrains IDEs, Neovim, and Sublime Text, making it one of the few AI coding agents that works across non-VS Code environments without requiring a workflow change.
• RAG-powered autocomplete: Autocomplete uses a Qwen2.5-Coder model combined with a codebase-aware vector database (RAG), providing project-specific context for real-time completions rather than generic language model suggestions.

Known Limitations

• Coin-based limits on free and Pro plans: Unlike flat-seat pricing tools, Refact.ai's free and Pro tiers use a coin system where each AI agent or chat interaction consumes credits. The free tier provides 2,000 coins/month, which may not be sufficient for heavy agentic use. Running out of coins mid-workflow is a documented friction point.
• Less polished UX than dedicated AI IDEs: As an extension-first product, Refact.ai does not offer the same level of integrated onboarding, visual diffs, or UI polish that purpose-built AI IDEs like Windsurf provide out of the box.
• Enterprise pricing not public: The enterprise plan (private server deployment) requires a direct inquiry through AWS Marketplace or the Refact team; pricing is not listed publicly.

Best For

Refact.ai is best suited for developers and engineering teams that require self-hosted or on-premises AI coding tools due to compliance, data privacy, or regulatory requirements. It is also a strong choice for JetBrains and Neovim users who want agentic coding capabilities without switching to a new standalone IDE. Teams comfortable managing their own AI infrastructure and willing to fine-tune models on their proprietary codebase will get the most from its enterprise tier.

Pricing

• Free: $0/month — 2,000 coins for AI Agent and Chat, unlimited fast autocomplete, RAG, Claude 4 / GPT-4.1 / Gemini 2.5 Pro access, self-hosting option, Discord support
• Pro: $10/month — 10,000 coins renewed monthly; additional coins purchasable at $1 = 1,000 coins; thinking abilities enabled
• Enterprise: Private server pricing via AWS Marketplace — LLM fine-tuning on proprietary codebase, multi-GPU support, access control, on-prem or private cloud deployment, zero telemetry, priority support

Prices are subject to change. Check the official pricing page for current details.

Tech Details

• Type: CLI Agent + IDE Extension
• IDEs: VS Code, JetBrains IDEs, Neovim, Sublime Text
• Key features: autonomous agent, in-IDE chat, real-time autocomplete (RAG + Qwen2.5-Coder), GitHub integration, CI/CD integration, database connections, self-hosting, LLM fine-tuning (Enterprise)
• Privacy / hosting: cloud (free/pro); self-hosted (open-source repo); enterprise on-prem (zero telemetry)
• Models / context window: Claude 4, GPT-4.1, GPT-4o, Gemini 2.5 Pro, Qwen2.5-Coder; context window not publicly documented per tier

When to Choose This Over Windsurf

• You need self-hosted or on-premises deployment for data privacy or compliance reasons
• You work primarily in JetBrains IDEs, Neovim, or Sublime Text and don't want to switch tools
• You want an open-source codebase you can inspect, fork, and customize
• Your team needs to fine-tune AI models on your proprietary code (Enterprise tier)
• You want autonomous agent capabilities at a lower entry price point ($0 free tier)

When Windsurf May Be a Better Fit

• You prefer a fully integrated standalone AI IDE with a polished out-of-the-box experience
• You do not have the infrastructure or appetite to manage self-hosted deployments
• You want a flat usage model rather than credit/coin-based consumption tracking

Conclusion

Refact.ai is the strongest Windsurf alternative for teams where data sovereignty, open-source transparency, or cross-IDE support are non-negotiable. Its combination of self-hosting, fine-tuning, and autonomous agent capabilities makes it a compelling choice for enterprise and privacy-conscious engineering teams who are willing to invest in setup in exchange for full control. Developers primarily on VS Code who want a polished, zero-configuration AI IDE will likely prefer a tool like Windsurf or Cursor over Refact.ai.

Sources

• Official Site
• Official Pricing
• Self-Hosting GitHub Repo

FAQ