China21B / 3B active131K contextThinking

Explore ERNIE-4.5-21B-A3B-Thinking

Use Baidu's efficient mixture-of-experts reasoning model for mathematics, science, coding, long-context analysis, and function calling.

Model

baidu/ERNIE-4.5-21B-A3B-Thinking

Input

Configure your request

System prompt Optional

Set instructions or context for the reasoning model.

Your message

Parameters

Stream responseReturn reasoning and answer tokens incrementally. Sample outputEnable probabilistic decoding.

Temperature

Controls randomness when sampling.

Top P

Nucleus sampling threshold.

Top K

Limits tokens considered at each step.

Min P

Filters tokens below the relative probability floor.

Maximum output tokens

Input and output together must fit the 131K context.

Repetition penalty

Presence penalty

Frequency penalty

Seed

Stop sequences

Stop when any listed sequence is generated.

Function tools (JSON)

ERNIE supports function calling with JSON-schema tool definitions.

Tool choice

Control whether the model may call a function.