ERNIE 5.1: API pricing, context window and capabilities

Prices from official vendor price lists · October 2026

ERNIE 5.1 costs $0.56 per 1M input tokens and $2.53 per 1M output tokens. Mid-priced: dearer than 60% of this rating. Recorded for reasoning, tool calling, proprietary API.

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Capabilities

API $/1M (in / out)

$0.56 / $2.53

Price / mo

API only

Output $/1M

2.53

Overview Reviews

ERNIE 5.1 is an AI model from Baidu, priced at $0.56 input and $2.53 output per 1M tokens. That places it in the mid tier of this rating — dearer than 60% of the 205 priced models listed.

Capabilities recorded in this rating: text & chat, reasoning, tool calling, multilingual, proprietary API. Access is through the API rather than a consumer subscription.

API price$0.56 / $2.53per 1M tokens, in / out

ContextNot publishedtokens per conversation

VendorBaiduall models from this vendor

TierMiddearer than 60% of models

Cost calculator

1M tokens/mo10M tokens/mo50M tokens/mo200M tokens/mo

Standard$2.04~~AED 7 per month~~

With batch −50%$1.02~~AED 4 per month~~

With caching on input$1.91~~AED 7 per month~~

Standard$20.38~~AED 75 per month~~

With batch −50%$10.19~~AED 37 per month~~

With caching on input$19.11~~AED 70 per month~~

Standard$102~~AED 374 per month~~

With batch −50%$50.94~~AED 187 per month~~

With caching on input$95.58~~AED 351 per month~~

Standard$408~~AED 1,497 per month~~

With batch −50%$204~~AED 748 per month~~

With caching on input$382~~AED 1,404 per month~~

Assumes a 1:3 input-to-output ratio, which is typical for chat and generation. Dirham figures use 3.6725 per dollar. Batch and caching discounts apply where the vendor offers them.

Compared with alternatives

How ERNIE 5.1 sits against its neighbours in this rating. Tap a card to open that model.

Hy4 preview

Cheaper

Tencent

$0.84 / $2.521M tokens

Grok 4.3

Closest match

xAI

$1.25 / $2.51M tokens

LongCat 2.0

Step up

Meituan

$0.75 / $2.951.05M tokens

Good and poor fit

Good fit

Multi-step analysis, planning and code review, where the first plausible answer is often wrong.
General text generation and conversation across languages.

Poor fit

Anything requiring image input — this model does not accept it.

Related filters

Text & chat234 models for text generation and chat

Reasoning175 models that think before answering

Tool calling172 models that call your functions

Proprietary API151 closed-weight, API-only models

Baidu3 models from this vendor

All 245 modelsThe full rating with filters and prices

Frequently asked questions

How much does ERNIE 5.1 cost?

$0.56 / $2.53 per 1M tokens, input and output. In dirhams that is roughly AED 2.06 per 1M input tokens. Batch processing halves it where the vendor offers it.

What is the context window of ERNIE 5.1?

Baidu does not publish a context window for this model.

What can ERNIE 5.1 do?

In this rating it is recorded with: text & chat, reasoning, tool calling, multilingual, proprietary API.

Is ERNIE 5.1 a good choice?

It depends on the job. See the good-fit and poor-fit lists above, and compare against the neighbouring models before committing.

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