Explore Baidu's ERNIE 4.5 21B A3B Thinking Model

Refined for deep reasoning in text-based tasks.

Input: text Output: text Context: 131,072 tokens Release: 2025-10-09

Discover Baidu's ERNIE 4.5 21B A3B Thinking model, released on October 9, 2025. This text-to-text model offers a wide context window of 131072 tokens, making it ideal for complex reasoning tasks. Designed to enhance capabilities in logical puzzles, math, science, coding, and text generation, it supports various parameters like frequency and presence penalties, temperature, and more. Whether you're tackling academic benchmarks or generating detailed text, ERNIE 4.5 is crafted to deliver depth and quality in reasoning.

Use Cases

Here are a few ways teams apply Baidu: ERNIE 4.5 21B A3B Thinking in practice—from fast drafting to multimodal understanding. Adapt these ideas to your workflow.

Solve complex logical puzzles

Generate detailed scientific text

Enhance coding capabilities

Tackle expert-level academic tasks

Key Features

A quick look at the capabilities that make this model useful in real projects.

Wide context window of 131072 tokens

Supports text-to-text modality

Enhanced for logical puzzles and math

Includes parameters like frequency penalty

Designed for academic benchmarks

Specs

Overview

Vendor
baidu

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

Release
2025-10-09

Modalities & context

Input
text

Output
text

Context
131,072 tokens

Parameters & defaults

Supported parameters: frequency_penalty, include_reasoning, max_tokens, presence_penalty, reasoning, repetition_penalty, seed, stop, temperature, top_k, top_p

Defaults: temperature 0.6, top_p 0.95

Benchmark tests: Baidu: ERNIE 4.5 21B A3B Thinking

We ran this model against a few representative prompts to show its range. Review the outputs below and be the judge.

Text

Prompt:

Write 150 words on how AI might positively upend work, leisure and creativity

Artificial intelligence promises transformative shifts across work, leisure, and creativity. In **work**, AI automates repetitive tasks—data entry, scheduling, or basic analysis—freeing humans for innovation, strategic thinking, and complex problem-solving. This enhances productivity, job satisfaction, and collaboration, as AI-driven tools streamline communication and project management. Remote work tools, powered by AI, further enable flexible, inclusive environments. In **leisure**, AI personalizes experiences. From tailored playlists and virtual tours to AI-curated hobbies or language practice, it transforms downtime into engaging, adaptive activities. Virtual reality (VR) and augmented reality (AR) offer immersive retreats, whether exploring ancient civilizations or relaxing in custom-designed virtual spaces. For **creativity**, AI acts as a collaborator, not a replacement. Tools like AI-generated art, music composers, or writing assistants inspire human creators by offering ideas, refining drafts, or experimenting with styles. Artists use AI to explore uncharted concepts, while writers leverage it for research or structure. This synergy fosters innovation, pushing boundaries while preserving the irreplaceable human touch. Ultimately, AI’s greatest impact lies in augmenting human potential—amplifying creativity, streamlining work, and enriching leisure. By focusing on collaboration and growth, we harness AI as a tool to elevate, ensuring technology and humanity thrive together.

Run this prompt on Upend.AI

Ready to try Baidu: ERNIE 4.5 21B A3B Thinking?

Chat with Baidu: ERNIE 4.5 21B A3B Thinking

up.end

/ˌəpˈend/

verb

To “upend” means to completely disrupt, overturn, or drastically change the established order or structure of something. It implies a significant shift or alteration that can potentially have far-reaching consequences. When something is upended, it is turned upside down or transformed in a way that challenges conventional norms or expectations. The term often carries a sense of innovation, transformation, and sometimes even a hint of upheaval, indicating that the changes are not just minor adjustments but rather a fundamental reimagining of the status quo.

Privacy Terms