ERNIE 4.5 21B A3B Thinking

Baidu

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.

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Capabilities

Thinking

Technical Specifications

Context Window

131,072 tokens

Max Output

65,536 tokens

Pricing

Token Costs (per 1M tokens)

Cache Miss Input

$0.07

Non-Reasoning Output

$0.28

Legacy

Made legacy on

Reason

21B thinking; limited availability outside China

Recommended Replacement

Qwen3.6 Plus