ERNIE 5.1 is Baidu's language model with a 119K context window and up to 66K output tokens, starting at $0.563 / 1M input and $2.54 / 1M output. A large multilingual foundation LLM in Baidu's ERNIE series designed for general-purpose language understanding and generation.
Specifications
Canonical IDbaidu-ernie-5-1
TypeLanguage
StatusActive
CreatorBaiduBaidu
Providers
Context Window119K tokens
Max Output66K tokens
Input ModalitiesText
Output ModalitiesText
Reasoning Effortsdefault

Capabilities

Input1/5
Text
Image·
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities2/13
Reasoning
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching
Assistant Prefill·

Pricing by Provider

US Dollar ($)
Per 1M tokens
ProviderStandard
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
Aihubmix
aihubmix/ernie-5.1
$0.563$2.54$0.563

Cost Calculator

US Dollar ($)
Preset:

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
ERNIE 5.1119K$0.563$2.54Current
ERNIE 5 Thinking PreviewAvailable
ERNIE 4.5 21B A3B Thinking131K$0.070$0.280Available
ERNIE 4.5 300B A47B131KAvailable
ERNIE 4.5 VL 424B A47B123K$0.420$1.25Deprecating
ERNIE 4.5 300B A47B Paddle123K$0.280$1.10Available
ERNIE 4.5 VL 28B A3B Thinking131K$0.390$0.390Available
ERNIE ImageAvailable
ERNIE Image TurboAvailable

Model IDs

aihubmix/ernie-5.1
baidu-ernie-5-1