Chat with 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 understa

No signup required — 10,000 session credits for guests. 50,000 free credits on account creation.

Provider
Baidu
Model slug
baidu/ernie-4.5-21b-a3b
Typical cost
Around 189–472 credits per typical message. 15M Pro credits buy roughly 31,779–7…
Availability
On Faceb.ai · chat + API

About 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

What it's good at

1

120,000-token context window — enough for long documents.

2

Extremely low per-token price compared to frontier models — good for high-volume workloads.

3

Hosted by Baidu — you can access it here alongside GPT-4o, Claude, Gemini and 100+ more on one plan.

4

Switch to any other model mid-conversation from the picker.

Pricing on Faceb.ai

Around 189–472 credits per typical message. 15M Pro credits buy roughly 31,779–79,365 messages.

Frequently asked — Baidu: ERNIE 4.5 21B A3B

What is Baidu: ERNIE 4.5 21B A3B?

Baidu: ERNIE 4.5 21B A3B is a chat/completion model served by Baidu and accessed through Faceb.ai. Try it without signing up — guest users get 10,000 session credits to experiment.

Is Baidu: ERNIE 4.5 21B A3B free on Faceb.ai?

You get 50,000 credits on signup — usually enough for a handful of messages. After that, Pro is $14.99/month for 15M credits, or top-ups from $5.

What's Baidu: ERNIE 4.5 21B A3B's context window?

120,000 tokens. Paste your source material in, no need to truncate.

Can I call Baidu: ERNIE 4.5 21B A3B from the API?

Yes. Any API key from /account/api/ works with model slug `baidu/ernie-4.5-21b-a3b`. The OpenAI SDK works with base_url=https://api.faceb.ai/v1.

How does Baidu: ERNIE 4.5 21B A3B compare to GPT-4o or Claude?

Depends on the task. Faceb.ai lets you switch models per message — benchmark side-by-side by asking both the same prompt, which is more reliable than abstract comparisons.

How much does Baidu: ERNIE 4.5 21B A3B cost per message here?

Around 189–472 credits per typical message. 15M Pro credits buy roughly 31,779–79,365 messages.

Does Faceb.ai train on my Baidu: ERNIE 4.5 21B A3B prompts?

No. We contractually request that upstream providers not train on content routed through us. Your chat history lives only on your account.

Is Baidu: ERNIE 4.5 21B A3B good for coding?

It depends on the model size and training mix. For serious code work the developer favourites are Claude 3.5 Sonnet and DeepSeek V3; for quick edits, most capable models work fine.

Can I use Baidu: ERNIE 4.5 21B A3B on the API with the OpenAI SDK?

Yes — point your SDK at https://api.faceb.ai/v1 and use this model's slug as the model parameter. Everything else works as normal.

Does Baidu: ERNIE 4.5 21B A3B support image inputs?

Check the model catalog — multimodal models are marked in the picker. If it accepts images, you can drop screenshots and diagrams straight into the chat.

Can I switch from Baidu: ERNIE 4.5 21B A3B to another model mid-chat?

Yes — the picker is always at the top of the chat. Previous context carries over.

Will newer versions of Baidu: ERNIE 4.5 21B A3B show up here automatically?

Yes. Our catalog auto-fetches from the upstream aggregator, so provider updates and new versions appear in the picker as soon as they're available.

Or try a different model

Your Faceb.ai credits work for every model — switch per message, no extra subscriptions.

Ready to chat?

One subscription covers every frontier model — switch between them per message. No extra API keys, no extra bills.

Start chatting with Baidu: ERNIE 4.5 21B A3B → Go Pro · $14.99/mo