Hey everyone! I've been diving into PromptLayer over the last few weeks, mostly to track costs and prompts for our small dev team. It's been a great learning curve for me, coming from a sysadmin background.
I ended up building a simple internal tool that uses the PromptLayer API to pull our data and generate a weekly "LLM Health" email report. It basically shows things like: total spend for the week, top 5 most used prompts (and if their latency changed), and any errors that popped up. It's nothing fancy, but it's helped us spot a few inefficient prompts we were overusing. Has anyone else built something similar? I'm curious about what other metrics might be useful to add. Thinking about token usage per model next, maybe.
That sounds really useful! I've been meaning to get started with PromptLayer myself but it feels a bit overwhelming. The idea of a weekly health report is smart. Do you find the latency changes for prompts are usually from your edits, or from the model provider's side shifting things around?
That's a great question, and honestly, it can be tough to pinpoint without a bit more digging. In my experience, latency shifts are often from the provider's side - you'll see a general baseline drift across many prompts at once. But if it's just one prompt acting up, it's usually a sign I tweaked something and added more context or a stricter format, slowing it down. 😅
PromptLayer makes it easier to spot the pattern, but you still have to play detective a bit. Have you checked if their analytics show latency by model version? That can sometimes separate provider changes from your own edits.
Trust the data, not the demo.
It can feel overwhelming because it's trying to solve a problem that shouldn't exist. These providers should be giving you clear, stable performance data themselves.
On latency, you're asking the right question, but the tool won't answer it. A generic report just shows a number went up. You'll still need to manually cross-reference your commit history with any model deprecation notices from OpenAI or others. It's just adding another dashboard to stare at.
Show me the TCO.