Baidu: ERNIE 4.5 21B A3B
Analysis Summary
Baidu's ERNIE 4.5 21B A3B is listed as a text model with a 131K context window, tool use, and function calling. The supplied record contains no benchmark results, so its reasoning, coding, instruction following, and reliability cannot be assessed from measured performance here. Pricing is listed at $0.07 per million input tokens and $0.28 per million output tokens.
The low listed cost and tool support make it a possible candidate for a limited evaluation of simple text or tool-connected workloads. However, there is no evidence in the provided data to support using it for client-facing content, complex analysis, or autonomous agents without first validating quality and failure modes. No vision capability is listed.
Treat ERNIE 4.5 21B A3B as unvalidated for production rather than assuming capability from the product description. A focused test set should establish whether its cost advantage translates into acceptable results for a specific workflow.
Assessed September 23, 2026
Editorial notes
ERNIE 4.5 21B A3B lists tool and function calling, a 131K context window, and low API prices, but the supplied record contains no benchmark results.
The DFO score ranks models on the Artificial Analysis Intelligence Index and is refreshed as new models launch. The write-up and verdict are our own. Feedback?
DFO Verdict
ERNIE 4.5 21B A3B lists tool and function calling, a 131K context window, and low API prices, but the supplied record contains no benchmark results.
How Baidu: ERNIE 4.5 21B A3B compares
Its 131K-token context window is larger than 51% of the models we list. At $0.07 per million input tokens it is cheaper than 69% of comparable models.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $0.07 | $0.000070 |
| Output | $0.28 | $0.000280 |
What would Baidu: ERNIE 4.5 21B A3B cost your business?
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A website chatbot handling around 100 customer conversations a day, a few short messages each.
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Talk to our teamAbout Baidu: ERNIE 4.5 21B A3B
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..
Frequently asked questions about Baidu: ERNIE 4.5 21B A3B
How much does Baidu: ERNIE 4.5 21B A3B cost?
Baidu: ERNIE 4.5 21B A3B costs $0.07 per million input tokens and $0.28 per million output tokens.
What is the context window of Baidu: ERNIE 4.5 21B A3B?
Baidu: ERNIE 4.5 21B A3B has a context window of 131,072 tokens (131K).
What can Baidu: ERNIE 4.5 21B A3B do?
Baidu: ERNIE 4.5 21B A3B supports tool use and function calling.
Who created Baidu: ERNIE 4.5 21B A3B?
Baidu: ERNIE 4.5 21B A3B is developed by Baidu and was released on August 12, 2025.