Baidu: ERNIE 4.5 21B A3B
Analysis Summary
Baidu: ERNIE 4.5 21B A3B sits in the Legacy tier on our leaderboard, ranked #404 of 556 published models on overall intelligence. At $0.070 input and $0.280 output per 1M tokens, it is among the most expensive on the market. It offers a standard large context window and supports tool use and function calling.
Editorial notes
Baidu ERNIE 4.5 21B A3B has no benchmark data available; tool use and function calling are present at a low price, but capability cannot be assessed without measured scores.
Assessed May 14, 2026
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Performance Profile
A sophisticated text-based Mixture-of-Experts (MoE) model featuring 21B total parameters with 3B activated per token, delivering exceptional multimodal understanding and generation through heterogeneous MoE structures and modality-isolated routing. Supporting an..
Capabilities
How does Baidu: ERNIE 4.5 21B A3B stack up?
Compare side-by-side with other legacy models.
Model Information
| OpenRouter ID |
baidu/ernie-4.5-21b-a3b
|
| Provider | baidu |
| Release Date | August 12, 2025 |
| Context Length | 131,072 tokens |
| Max Completion | 8,000 tokens |
| Status | Active |
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $0.07 | $0.000070 |
| Output | $0.28 | $0.000280 |
