Poolside

Poolside positions itself as the enterprise answer to coding agents, with foundation models (Malibu, Point) trained specifically for software engineering and a deployment story that keeps everything inside your firewall. The pitch is autonomy without data leakage, which matters if you're building regulated fintech or healthcare systems where cloud-based agents are a non-starter. The autonomy here is task-level, not session-level. You point Poolside at a feature spec or a refactoring job, and it plans a multi-file changeset, writes the code, runs tests, and iterates on failures. I've seen it handle a Django API endpoint migration across six files without needing step-by-step prompts. That's genuinely useful when you're dealing with boring-but-fiddly work like updating ORM queries or propagating schema changes. The agent understands project structure well enough to avoid the "write everything in one file" trap that simpler tools fall into. Where it earns its keep is regulated environments. If you're a bank or a med-tech company, the on-prem deployment means you're not shipping proprietary code to OpenAI or Anthropic. Poolside runs on your infrastructure, which solves the compliance problem that kills most agent adoption in enterprise. The trade-off is setup cost. You need to provision GPU capacity, manage model updates, and train your team on a bespoke platform. This isn't a VS Code extension you install in five minutes. Failure modes are predictable. Complex architectural decisions still need a human. Poolside can refactor a service, but it won't tell you whether to split a monolith. It also struggles with legacy codebases that lack tests or documentation, same as every other agent. The models are strong on Python, JavaScript, and Java, weaker on niche languages. Compared to Cursor or GitHub Copilot Workspace, Poolside is slower to get started but more capable once you're running. Cursor is better for exploratory coding where you're still figuring out the problem. Poolside is better when the problem is clear and you need someone (something) to execute a plan across multiple files without hand-holding. The enterprise pricing reflects that: this is for teams with budget and compliance constraints, not solo developers. One workflow where it shines: migrating a REST API to GraphQL. You define the schema, point Poolside at the old endpoints, and it generates resolvers, updates tests, and flags breaking changes. That's a week of junior developer time compressed into an afternoon of review.