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Baidu: ERNIE 4.5 21B A3B Thinking

Server-rendered model summary page for indexing/share previews. Use the interactive explorer for full filtering and comparison.

Match confidence: UnmatchedSource type: openrouter_only
Context window
131.1K
Arena overall rank
—
Input price
$0.000 / 1M
Output price
$0.000 / 1M

Identifiers & provenance

Primary ID
baidu/ernie-4.5-21b-a3b-thinking
OpenRouter ID
baidu/ernie-4.5-21b-a3b-thinking
Canonical slug
baidu/ernie-4.5-21b-a3b-thinking

Source semantics

  • Arena rank is a human-preference leaderboard signal, not a universal truth metric.
  • OpenRouter usage/popularity reflects adoption/traffic, not benchmark quality.
  • Pricing fields may differ by provider and can include extra modes beyond prompt/completion.

Read more on Methodology & data sources.

Description

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.

Raw fields snapshot

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Baidu: ERNIE 4.5 21B A3B Thinking · NNZen