ERNIE 4.5 21B A3B Thinking: Pricing, Context Window & Benchmarks
21Bby 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.
What you can do with ERNIE 4.5 21B A3B Thinking
Everyday Q&A and clear explanations
Writing help (emails, posts, summaries)
Idea generation and brainstorming
Learning support with step-by-step guidance
Benchmarks not available
This model isn't listed on Artificial Analysis yet. Showing OpenRouter specs below.
| Metric | Value |
|---|---|
| Provider | Baidu |
| Context Window | 131,072 tokens |
| Input Price | $0.07/1M tokens |
| Output Price | $0.28/1M tokens |
| Release Date | Oct 9, 2025 |
| Modalities | text |
| Capabilities | N/A |
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Frequently asked questions
What is ERNIE 4.5 21B A3B Thinking good for?
Use ERNIE 4.5 21B A3B Thinking for everyday tasks like writing, summarizing, brainstorming, and getting clear explanations.
How much does ERNIE 4.5 21B A3B Thinking cost?
Pricing is based on usage. Current rates are $0.07/1M tokens for input and $0.28/1M tokens for output.
Can I try ERNIE 4.5 21B A3B Thinking for free?
Yes. You can start a chat instantly and test the model before deciding on a plan.
Does ERNIE 4.5 21B A3B Thinking support images or audio?
ERNIE 4.5 21B A3B Thinking focuses on text-based tasks.
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Pricing, context, and capability data are sourced from OpenRouter.
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