Model error diagnosis

Baidu: ERNIE 4.5 21B A3B Thinking | context length exceeded

Baidu: ERNIE 4.5 21B A3B Thinking returning 400 / context length exceeded means you should first confirm whether model ID baidu/ernie-4.5-21b-a3b-thinking is visible for this Baidu Wenxin key, then separate permission, context, capability, rate limit, or route issues.

Model

baidu/ernie-4.5-21b-a3b-thinking

Baidu: ERNIE 4.5 21B A3B Thinking

Provider

Baidu Wenxin

5 models in catalog

Error type

context length exceeded

context-exceeded

Status code

400

China model route

Model error summary

Model

baidu/ernie-4.5-21b-a3b-thinking

Error type

context-exceeded

Status code

400

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

What this model error usually means

Baidu: ERNIE 4.5 21B A3B Thinking returning 400 / context length exceeded means you should first confirm whether model ID baidu/ernie-4.5-21b-a3b-thinking is visible for this Baidu Wenxin key, then separate permission, context, capability, rate limit, or route issues.

Model: baidu/ernie-4.5-21b-a3b-thinking
Provider: Baidu Wenxin
Status code: 400

How to prove it during checking

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

List models: confirm whether baidu/ernie-4.5-21b-a3b-thinking is actually visible instead of guessing from the display name.
Light probe: use minimal input to verify whether Baidu Wenxin returns the same 400, then record the error body.
Compare model facts: context 131,072, input $0.070, output $0.280.
supports frequency_penalty
supports include_reasoning
supports max_tokens
supports presence_penalty

Next action

Baidu: ERNIE 4.5 21B A3B Thinking context length exceeded should not end at failed. Return the next move: change model ID, add permission, reduce context, disable unsupported capability, change route, monitor, or hold listing.

Context: 131,072
Price: $0.070 / $0.280
Read-only check. Detection data burns after 5 minutes.

Open key check

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

Open models

Baidu: ERNIE 4.5 21B A3B Thinking

Open providers

Baidu Wenxin