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ERNIE 4.5 21B A3B vs Phi 4 (Comparative Analysis)

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Comparative Analysis: ERNIE 4.5 21B A3B vs. Phi 4
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Overview

Phi 4 was released 7 months before ERNIE 4.5 21B A3B.
ERNIE 4.5 21B A3BERNIE 4.5 21B A3B
Phi 4Phi 4
Model Provider
The organization behind this AI's development
Baidu logoBaidu
Microsoft logoMicrosoft
Input Context Window
Maximum input tokens this model can process at once
120K
tokens
16.4K
tokens
Output Token Limit
Maximum output tokens this model can generate at once
8K
tokens
Not specified
tokens
Release Date
When this model first became publicly available
August 12th, 2025
January 10th, 2025

Capabilities & Features

Compare supported features, modalities, and advanced capabilities
ERNIE 4.5 21B A3B
Phi 4
Input Types
Supported input formats
📝Text
📝Text
Output Types
Supported output formats
📝Text
📝Text
Tokenizer
Text encoding system
OtherOther
Key Features
Advanced capabilities
Function CallingStructured OutputReasoning ModeContent Moderation
Function CallingStructured OutputReasoning ModeContent Moderation
Open Source
Model availability
Available on HuggingFace →Available on HuggingFace →

Pricing

ERNIE 4.5 21B A3B is roughly 1.2x more expensive compared to Phi 4 for input tokens and roughly 2.0x more expensive for output tokens.
ERNIE 4.5 21B A3BERNIE 4.5 21B A3B
Phi 4Phi 4
Input Token Cost
Cost per million input tokens
$0.07
per million tokens
$0.06
per million tokens
Output Token Cost
Cost per million outut tokens
$0.28
per million tokens
$0.14
per million tokens

Benchmarks

Compare relevant benchmarks between ERNIE 4.5 21B A3B and Phi 4.
ERNIE 4.5 21B A3BERNIE 4.5 21B A3B
Phi 4Phi 4
MMLU
Measures knowledge across 57 subjects like law, math, history, and science
Benchmark not available.
Benchmark not available.
MMMU
Measures understanding of combined text and images across various domains
Benchmark not available.
Benchmark not available.
HellaSwag
Measures common sense reasoning by having models complete sentences about everyday situations
Benchmark not available.
Benchmark not available.

At a Glance

Quick overview of what makes ERNIE 4.5 21B A3B and Phi 4 unique.
Baidu logoERNIE 4.5 21B A3B by Baidu can use external tools and APIs. It can handle standard conversations with its 120K token context window. Very affordable at $0.07/M input and $0.28/M output tokens. Released August 12th, 2025.
Microsoft logoPhi 4 by Microsoft generates structured data. It can handle standard conversations with its 16.4K token context window. Very affordable at $0.06/M input and $0.14/M output tokens. Released January 10th, 2025.

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