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Baidu: ERNIE 4.5 21B A3B Thinking

Baidu·Released 2025-10-09
Open Source131K ctx

About

ERNIE-4.5-21B-A3B-Thinking is Baidu's upgraded lightweight MoE model, refined to boost reasoning depth and quality for top-tier performance in logical puzzles, math, science, coding, text generation, and expert-level academic benchmarks.

Pricing

Input

$0.07

per 1M tokens

Output

$0.28

per 1M tokens

Blended

$0.12

per 1M tokens

Cheaper than 81% of models. Median price is $0.54/1M tokens.

Cost Calculator

Tokens per day1M
100K100M

Daily

$0.12

Monthly

$3.68

vs. Similar Models

Baidu: ERNIE 4.5 21B A3B
$0.120%
Llama 3.2 3B Instruct
$0.12-0%
Reka Flash 3
$0.13+2%
Olmo 3 7B Instruct
$0.13+2%

Performance

Context Window

131K

tokens

Larger than 27% of models

Max Output

66K

tokens

50% of context

Context Window Comparison

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131KSame
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Open Source

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