Model limit probe

Baidu: ERNIE 4.5 21B A3B | concurrency limit

Baidu: ERNIE 4.5 21B A3B concurrency limit decides whether a key can enter a production route. TestKey reads model ID baidu/ernie-4.5-21b-a3b, provider Baidu Wenxin, catalog context, real-key headers, 429 errors, and region signals together.

Model

baidu/ernie-4.5-21b-a3b

Baidu: ERNIE 4.5 21B A3B

Provider

Baidu Wenxin

5 models in catalog

Limit dimension

concurrency limit

concurrency

Visible signal

real key probe required

Context window: 120,000

Limit matrix summary

Model

baidu/ernie-4.5-21b-a3b

Limit dimension

concurrency

Visible signal

real key probe required

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

Why this limit matters

Baidu: ERNIE 4.5 21B A3B concurrency limit decides whether a key can enter a production route. TestKey reads model ID baidu/ernie-4.5-21b-a3b, provider Baidu Wenxin, catalog context, real-key headers, 429 errors, and region signals together.

Model: baidu/ernie-4.5-21b-a3b
Provider: Baidu Wenxin
Limit dimension: concurrency limit

How to prove it

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

Start with the visible signal: real key probe required, then read headers and error bodies with read-only requests.
concurrency limit must bind model ID baidu/ernie-4.5-21b-a3b; limits from another model at the same provider cannot be reused.
concurrency limit · real key probe required · 120,000

Operator action

Baidu: ERNIE 4.5 21B A3B concurrency limit is not just a number. It should become route throttling, sale tags, headroom alerts, fallback model suggestions, and price protection.

Read-only check. Detection data burns after 5 minutes.
Visible signal: real key probe required
Context window: 120,000

Open key checker

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

Open models

Baidu: ERNIE 4.5 21B A3B

Open providers

Baidu Wenxin