Skip to main content
AI Choice Engine

Baidu

Baidu ERNIE 5.1

Baidu ERNIE 5.1 is a Baidu model with 128K context, $0.56 in / $2.53 out per million tokens, last verified October 25, 2026. Open weights: not verified. Public-board scores are linked to the publisher; vendor-only figures stay in the watch-out, not on the board.

ERNIE 5.1 is Baidu's latest ERNIE model in the checked Qianfan catalogue, positioned by the publisher for agentic, knowledge and reasoning workloads.

Recorded profile verification October 25, 2026Individual provider fields may change

AI model specification details
SpecificationBaidu ERNIE 5.1
ProviderBaidu
TierBalanced
Context window128K
Max output66K
Input / 1M tokens$0.56
Output / 1M tokens$2.53
WeightsNot verifiedUnverified
ParametersNot verifiedUnverified
Reasoning levelsNot verifiedUnverified
Modalitiestext
API model idernie-5.1
ReleasedNot verifiedUnverified

Pricing tiers: Baidu Qianfan international USD rates are $0.56/$2.53 per MTok for input ≤32K and $0.84/$3.10 for 32K < input ≤128K. The model list advertises 128K context, 119K maximum input and an exact 65,536 maximum output; input and output share the context budget. A 5.1 cache tariff is not established by the captured price list.

Best for

  • Chinese-language work
  • Enterprise (China)
  • Agentic work

Watch out

The checked endpoint is ernie-5.1 for text generation. Exact release day, parameters, downloadable-weight status, image/audio/video endpoint support and selectable effort controls remain unverified for 5.1. Do not inherit 5.0's multimodal or deep-thinking contract. Published default quotas do not guarantee an account's enabled limits.

Source receipts

Catalog figures for this model were checked against the following sources.

Common questions

Baidu ERNIE 5.1

Answered from the verified figures on this page rather than general guidance.

How much does Baidu ERNIE 5.1 cost per million tokens?
Baidu ERNIE 5.1 lists base rates of $0.56 per million input tokens and $2.53 per million output tokens. Estimate both input and output token volume and any additional charges for your workload. Baidu Qianfan international USD rates are $0.56/$2.53 per MTok for input ≤32K and $0.84/$3.10 for 32K < input ≤128K. The model list advertises 128K context, 119K maximum input and an exact 65,536 maximum output; input and output share the context budget. A 5.1 cache tariff is not established by the captured price list.
What is Baidu ERNIE 5.1's context window?
Baidu ERNIE 5.1 accepts about 128K tokens of context. That only matters if you routinely send very long documents, large codebases, or multi-turn histories that approach that limit.
What is Baidu ERNIE 5.1 best for?
Baidu ERNIE 5.1 is a balanced tier from Baidu. It suits chinese-language work, enterprise (china), agentic work. The checked endpoint is ernie-5.1 for text generation. Exact release day, parameters, downloadable-weight status, image/audio/video endpoint support and selectable effort controls remain unverified for 5.1. Do not inherit 5.0's multimodal or deep-thinking contract. Published default quotas do not guarantee an account's enabled limits.
Model comparison catalogBenchmark library