P 
Plain
A developer-first support platform with an API and Slack support.
NOT REALLY
why this verdict
Keep it — OpenAI has not replaced it
OpenAI's version overlaps, but does not finish the support job, so this one is still worth keeping open.
- A named launch, not a vibe named, unlinked
- Incumbent helpdesks shipped AI agents of their own. OpenAI, February 1, 2025 — no announcement link recorded yet.
- How much of the job it covers not the job editorial call
- Parts of it. The job still needs the tool to get finished.
- Is there a free way to do it? paid only
- 2 replacements listed, all paid.
- What the call is worth nothing to cancel
- No paid entry tier tracked, so there is no subscription to cancel.
Reason composed from the fields above missing: announcement linked missing: free replacement listed recorded: two or more escape hatches
- Threatened by
- OpenAI
- Since
- February 1, 2025
- List price
- free
- Per year
- —
The backstory
Plain treats support as something you wire into your product: an API, typed customer context, and threads that live wherever the customer already is. That developer-shaped positioning is what separates it from Zendesk's AI, which is powerful but arrives with Zendesk attached.