(November 2025) Assistants API Latency

For those who are currently still using the Assistants API, have you all also been experiencing latency and slowness issues in responses?

In the past, it would average around 12-15s TTFT, including stream initialization and a tool call/s that would fetch data from our database.

As of today, it is consistently averaging over 28s TTFT.

Is anyone else encountering this problem? Also wondering if this has anything to do with the fact that the API is deprecating some time next year, as evidenced by the fact that the Assistants API uptime is no longer even shown on the status page.

Any insight would go a long way. Thank you!

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