GitHub Copilot Enterprise costs $39 per developer per month, which sounds reasonable until you do the math. For a 25-person team, that's $11,700 per year - more than most companies' entire SaaS budget. And it requires GitHub Enterprise Cloud, so you're already paying $21/month per user just for the privilege of giving Microsoft another $39. Compare this to GitHub Copilot Business at $19/month and you're paying double for enterprise-specific features that most teams don't actually need.
What You Actually Get
The killer feature is supposed to be the coding agent - you can assign it GitHub issues and it creates pull requests automatically. Sounds amazing in theory. In practice? I've seen it generate 15 PRs in a month where 8 needed major fixes. The agent created a React component with three different state management patterns in the same file. Another time it "fixed" a memory leak by commenting out the entire cleanup function.
The codebase understanding is genuinely useful when it works. Enterprise indexes your private repos, so it knows about your internal APIs and follows your patterns. But "follows your patterns" is generous - it's more like "copy-pastes your existing code with minor variations." I watched it generate a database query that included our deprecated authentication method from 2022.
The Hidden Costs Nobody Talks About
You get 1,000 \"premium requests\" per month, which sounds like a lot until you realize how fast they disappear. Heavy usage of the coding agent burns through those requests in about two weeks. Then you're paying $0.04 per additional request, and trust me, those overage charges add up. Our team hit $340 in overages last month because everyone was experimenting with the agents. The official billing guide explains the costs but doesn't warn you how quickly premium requests get consumed with actual usage.
Real Performance Numbers (Not Marketing BS)
Forget the "55% faster task completion" bullshit from controlled studies. Here's what actually happens:
- First week: Everyone's excited, productivity actually drops as people experiment
- Month 1: Some genuine time savings on boilerplate and simple functions
- Month 3: The novelty wears off, people realize they're spending more time fixing AI suggestions than writing from scratch
- Month 6: A few developers become proficient at prompt engineering and see real benefits, most others revert to using it as an autocomplete
The coding agent created 47 PRs for our team in three months. 23 were merged with minimal changes, 18 needed significant rework, and 6 were closed without merging because the approach was fundamentally wrong.
Version-Specific Gotchas Nobody Warns You About
The agent struggles with anything newer than what's in its training data. It kept suggesting `componentWillReceiveProps` in React components until someone updated its knowledge base. It generated Node.js code using deprecated `request` library methods that were removed in Node 18.2.0. Meanwhile, modern HTTP clients like axios have been the standard for years.
We spent two hours debugging why our TypeScript build was failing only to discover the agent had mixed ES6 imports with CommonJS exports in the same file. The error message was classic: `Cannot use import statement outside a module` - every Node developer's favorite 3AM debugging session. The React documentation clearly explains deprecated lifecycle methods, but the agent still generates unsafe component patterns that trigger warnings in modern React applications.