The Context Window Still Sucks
GitHub upgraded Copilot Chat to 64k tokens recently, but the autocomplete is still running on what feels like 2k context. I'll spend an hour explaining our microservice nightmare - Docker, Kubernetes, 15 different services, gRPC between them, Redis for caching - and by the time I paste the actual error it's asking me what fucking framework we're using.
A junior dev would remember better. Claude has way more context than Copilot's tiny window, and GPT-4 actually remembers what you said. No wonder developers are bailing.
Here's What Actually Happens in Production
First week it's amazing - autocompleting entire functions, feels like magic. Then around week 2 or 3 it starts suggesting variables that don't exist. By month 2 you're spending more time deleting its garbage suggestions than writing actual code. And somewhere around the 2-month mark you realize you're debugging AI hallucinations more than actual bugs.
The context window resets mid-conversation, so debugging sessions become impossible. You'll be deep in a complex problem, give it three files of context, and it'll respond like you're starting fresh. This is a known issue documented by users and confirmed by GitHub.
The Real Cost Breakdown
They market it as $39/month, but you need GitHub Enterprise Cloud for the "enterprise" features. That's another $19/month. So you're looking at $58 per developer, minimum.
Want repository indexing? Extra. Custom models? Also extra. By the time you get features that actually work in a real codebase, you're paying more than a Netflix subscription per developer for an AI that can't remember what you told it five minutes ago.
Production Horror Stories
The Missing Method Massacre: Copilot kept suggesting this hasPermission()
method that doesn't exist anywhere in our codebase. I accepted like 12 of these suggestions without thinking. Deploy to staging: instant NoSuchMethodError. Spent 4+ hours with grep searching for every occurrence, Jenkins stayed red until 11pm. My lead was not fucking happy.
The Curly Brace Catastrophe: Generated some massive service class but completely fucked up the bracket nesting. VS Code couldn't even parse the file. Some bullshit syntax error about an unexpected bracket somewhere like 200 lines deep. Had to paste it into an online bracket matcher because apparently AI can't count to three.
The Context Reset Incident: Spent almost an hour explaining our microservice nightmare with Kafka topics, rate limiting, circuit breakers, the whole mess. Asked it to fix one simple endpoint timeout. Response: "I need more context about your architecture." Are you fucking kidding me? I just spent an hour explaining it.
Why Teams Are Bailing
- Suggestions get progressively worse the longer your session runs
- Chat feature forgets context after 2-3 messages
- Autocomplete breaks VS Code IntelliSense when enabled
- It's slower than just googling Stack Overflow
- Leaked Microsoft data showing they're hemorrhaging $20/month per user
If you're paying for an AI that makes you less productive, what's the point?