Baidu Ernie 4.5 21B A3B Thinking

Name: Baidu Ernie 4.5 21B A3B Thinking
Brand: baidu
SKU: baidu/ernie-4.5-21b-a3b-thinking

baidu·baidu/ernie-4.5-21b-a3b-thinking·GA·Closed·ernie series

Reasoning model for deliberate analysis, multi-step problem solving, and tool use

Specs & pricing

Input / output per 1M tokens

Reference priceNovitaAI

$0.07 / $0.28

Blended $0.12 · Cache read —

Lowest paidHeliconeGateway

$0.07 / $0.28

Blended $0.12 · 1× spread

Context

131,072

Output limit

65,536

Knowledge cutoff

2025-03

Released / updated

2025-03-16 / 2025-09-19

Capabilities

✓ ReasoningTool use? Structured output✓ TemperatureAttachments

⚠ Providers report capability flags inconsistently

Modalities

Text

Available at 2 providers2 with public prices

Priced only

Provider	Tier	Input	Output	Cache read	Cache write	Context	Output limit	Status
Helicone	Gateway	$0.07	$0.28	—	—	128,000 ⚠	8,000
NovitaAI baidu/ernie-4.5-21B-a3b-thinking	Gateway	$0.07	$0.28	—	—	131,072	65,536

Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.

Reasoning control

Upstream provides no control info

2 / 2 providers expose no reasoning control (reasoning_options: []).

Your usage cost

Input tokens / month

Output tokens / month

Cache hit rate

Common scenarios

1Helicone$28.00

2NovitaAI$28.00

The cheapest paid channel is the only channel.

Price historyone sample accumulated per data sync

Input listOutput listMin blended

Baidu Ernie 4.5 21B A3B Thinking

Specs & pricing

Available at 2 providers2 with public prices

Reasoning control

Your usage cost

Price historyone sample accumulated per data sync

Related models

Baidu Ernie 4.5 21B A3B Thinking

Specs & pricing

Available at 2 providers2 with public prices

Reasoning control

Your usage cost

Price historyone sample accumulated per data sync

Related models