Generate SSE streaming test code for your stack.
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Plugsky is OpenAI-compatible — see docs and start on the free plan (2 free models, no card).
The Streaming API Tester is a browser page for checking streaming responses from any OpenAI-compatible provider, covering latency, chunk timing and throughput. It is for developers building chat interfaces who need to confirm that server-sent events arrive incrementally and that time-to-first-token is acceptable. The page frames what to measure: first chunk latency, gaps between chunks, total duration and tokens per second. Test from the same region and network path as production for meaningful figures.
The server sends generated tokens as server-sent events instead of waiting for the full answer. Clients display text incrementally, which makes responses feel faster even when total duration is unchanged.
Perceived speed in chat depends mostly on when the first words appear. A fast first chunk covers for a slower overall completion, while a long silence feels broken to users.
Proxies, load balancers and client libraries can buffer responses, collapsing a stream into one delayed block. Test through your production path to catch buffering before users do.
Canonical pricing and plans: plugsky.com/#sec-pricing · Terms · SLA · Docs