Devika vs Replit Ghostwriter

Devika is an open-source agentic software engineer that accepts high-level instructions, breaks them into steps, researches the web, and writes code to complete programming tasks. You run it locally with a chat-based web interface and your own model and search API keys.

The project started as an open-source alternative to Cognition's Devin. Devika combines large language models with planning, reasoning, and browser automation through Playwright. It supports Claude 3, GPT-4, Gemini, Mistral, Groq, and local models via Ollama.

Developers who want a self-hosted coding agent use Devika to scaffold features, fix bugs, or build projects from scratch while keeping control over models, search providers, and infrastructure.

Replit Ghostwriter is Replit's AI coding line inside its browser IDE, and the public ghostwriter URL now highlights Replit Agent for building production-ready apps through chat. You describe an app or site, refine it in conversation, and Agent can search the web, connect Stripe or OpenAI, use built-in database and auth, and test its own work in a browser loop before you publish.

Compared with standalone autocomplete plugins, Replit bundles the editor, hosting, database, and agent workflows in one workspace. Agent adds Extended Thinking and High Power model options for harder tasks, plus automations that can talk to Slack or email. The trade-off is effort-based credits: heavy Agent builds consume monthly allowances faster than simple Ghostwriter completions.

Starter is free with daily Agent credits and one published project. Core costs $20 per month billed annually ($25 monthly) and includes $25 of monthly credits plus up to 5 collaborators and 2 parallel agents. Pro is $95 per month billed annually with $100 credits, 15 collaborators, 10 parallel agents, and 28-day database rollbacks. Students, indie builders, and small teams are the core audience.