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ERNIE 4.5 21B A3B Thinking

Provider: Baidu Updated: 2026-06-28

ERNIE 4.5 21B A3B Thinking is an reasoning model model from Baidu, designed for reasoning, planning, and complex problem solving.

Reasoning Model Newly ReleasedEnglish

Pricing

Input -
Output -
Text to Image -
Image to Image -
Text to Video -
Image to Video -

Capabilities

Input Types Text
Output Types Text
Function Calling Supported
Session Cache Not supported
Fine-Tuning Supported
Prefix Cache Supported
Structured Output Supported
Image Understanding Not supported
Text Generation Supported
Text to Image -
Image to Image -
Text to Video -
Image to Video -
Open Source Status Open source

Parameters

Last Updated 2026-06-28
Context Length -
Max Input Tokens -
Max Output Tokens -
Max Thought Tokens -
TPM -
RPM -
Parameter Count 21B params
Modalities Text
Language Support English
Best For Reasoning, planning, and complex problem solving
Resolution -
Video Duration -
Frame Rate -

Benchmarks

These benchmark scores summarize how the model performs across different tasks and evaluation sets.

Math Index

Captures broad mathematical problem-solving and reasoning performance.

78.4
HumanEval

Evaluates code generation correctness on programming tasks.

62.3