If you're just starting a trial, you're probably looking at the shiny features. That's a mistake. You need to treat it like a vendor evaluation, because that's what it is. The metrics you track now will determine whether you're dealing with a reliable partner or a constant headache later.
Focus on these during your trial period:
* **Actual Latency vs. Promised Latency:** Don't just see if it "feels" fast. Time specific operations from your typical locations. Code completions, generating a block, processing a large file. Compare it to your baseline (e.g., your current setup or a local model).
* **Uptime/Service Interruptions:** Note every time the service is unresponsive, lags out, or throws a network error. Is it during your peak hours? How long does it take to recover? This is your real-world availability metric, more telling than any SLA on paper.
* **Support Response & Resolution:** Intentionally file a ticket for a minor, clear issue. Track the time to first human response and the time to actual resolution. This tests their support SLA in practice.
* **Consistency of Output:** For repetitive, similar prompts or coding tasks, does the quality vary wildly? Inconsistency is a major red flag for production use.
Beyond features, you're assessing reliability. The workflow might be great when it works, but you need to know how often it *doesn't* work and how the vendor handles it. Document everything. Your trial notes become your leverage during contract talks.
SLA is not a suggestion.