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.
Tested on 6 benchmarks · BenchGecko score 39.8. Top scores: OpenCompass · IFEval (81.2%), OpenCompass · AIME2025 (76.2%), OpenCompass · MMLU-Pro (70.8%).
OpenCompass Live Code Bench v6. Fresh competitive programming problems to evaluate code generation without memorization.
OpenCompass evaluation on AIME 2025 problems. Tests mathematical reasoning on fresh competition problems.
OpenCompass MMLU-Pro evaluation. Harder knowledge test with more answer choices.
OpenCompass evaluation of GPQA Diamond. PhD-level science questions from the hardest subset.
OpenCompass evaluation of Humanitys Last Exam. Expert-level cross-discipline knowledge test.
- Typetext
- Context131K tokens (~66 books)
- ReleasedOct 2025
- LicenseOpen Source
- StatusActive
- Cost / Message~$0.000
Frequently Asked Questions
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- ERNIE 4.5 21B A3B Thinking by baidu. BenchGecko score 39.8, rank 210 of 326 scored models (normalized average of public benchmark scores).
- List price $0.0700 input · $0.28 output per 1M tokens (as of 2026-05-03).
How to cite · data as of 2026-05-03
ERNIE 4.5 21B A3B Thinking · benchmarks, pricing and providers. BenchGecko, data as of 2026-05-03. https://benchgecko.ai/model/ernie-4-5-21b-a3b-thinking
Credit "Source: BenchGecko" with a link. Prices per provider and Gecko Tests are BenchGecko data (CC BY 4.0); benchmark scores keep their original source, listed in the JSON. JSON · llms.txt · MCP