Key error diagnosis

StepFun AI | timeout

StepFun AI returning 408/504 / timeout should not be judged from the message alone. Cross-check key shape, Base URL, balance, model permission, region/IP, and visible model list.

Provider

StepFun AI

China provider route

Error type

timeout

medium

Status code

408/504

timeout

Sample models

Step 3.5 Flash

Error route summary

Error type

timeout

medium

Provider

StepFun AI

Status code

408/504

Read-only check. Detection data burns after 5 minutes.

What this error usually means

StepFun AI returning 408/504 / timeout should not be judged from the message alone. Cross-check key shape, Base URL, balance, model permission, region/IP, and visible model list.

Provider: StepFun AI
Error type: timeout
Status code: 408/504

How to prove it during checking

Read-only check. Detection data burns after 5 minutes.

Run read-only identity first: confirm whether the key really belongs to StepFun AI, not just a compatible protocol.
Then list models or run a lightweight probe: check whether models like Step 3.5 Flash are visible and return stable evidence.
Finally record 408/504, error body, latency, egress IP, and reproducibility to separate balance, permission, route, or upstream issues.

Next action

timeout should not only show failed. The console should return the next move: refill balance, change Base URL, switch model, add permission, change egress IP, hold listing, or monitor.

Read-only check. Detection data burns after 5 minutes.
China provider route
Step 3.5 Flash

Open key checker

Read-only check. Detection data burns after 5 minutes.