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 heterogeneo

Creator: Baidu
Lifecycle: Active
Context: 120.0K
Max output: 8.0K
Released: Aug 12, 2025
Status: unknown

Input: $0.07 / 1M tokens
Output: $0.28 / 1M tokens
Cached read: — / 1M tokens
Cached write: — / 1M tokens
Batch discount: —%
Source: OpenRouter
Verified: Apr 5, 2026 (High)

Capabilities

Modalities: text→text
Capabilities: functionCalling

Official Links

Intro

https://openrouter.ai/baidu/ernie-4.5-21b-a3b

Docs

https://openrouter.ai/baidu/ernie-4.5-21b-a3b

Pricing

https://openrouter.ai/models

Benchmark Coverage

Benchmark	Version	Score	Date	Source	Notes

Release History

Release	Alias	Lifecycle	Release Date	Deprecation	Shutdown	Summary
ERNIE 4.5 21B A3B	baidu-ernie-4-5-21b-a3b	Active	Aug 12, 2025	—	—	Model available via OpenRouter.

Host Coverage

Host	Type	Context	Pricing Note	Differences
OpenRouter	aggregator	120.0K	$0.07/1M in · $0.28/1M out via OpenRouter	—

Migration Guidance

Change Events

Date	Type	Title	Description	Source
Aug 12, 2025	family_added	ERNIE 4.5 21B A3B published	Model made available via OpenRouter.	OpenRouter

Other models from Baidu

ERNIE 4.5 21B A3B Thinking, ERNIE 4.5 300B A47B, ERNIE 4.5 VL 28B A3B, ERNIE 4.5 VL 424B A47B