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    Baidu: ERNIE 4.5 21B A3B Thinking

    baidu/ernie-4.5-21b-a3b-thinking

    Created Oct 9, 2025131,072 context
    $0.07/M input tokens$0.28/M output tokens

    ERNIE-4.5-21B-A3B-Thinking is Baidu's upgraded lightweight MoE model, refined to boost reasoning depth and quality for top-tier performance in logical puzzles, math, science, coding, text generation, and expert-level academic benchmarks.

    Providers for ERNIE 4.5 21B A3B Thinking

    OpenRouter routes requests to the best providers that are able to handle your prompt size and parameters, with fallbacks to maximize uptime.

    Performance for ERNIE 4.5 21B A3B Thinking

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    Apps using ERNIE 4.5 21B A3B Thinking

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    Recent activity on ERNIE 4.5 21B A3B Thinking

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    Uptime stats for ERNIE 4.5 21B A3B Thinking

    Uptime stats for ERNIE 4.5 21B A3B Thinking across all providers

    Sample code and API for ERNIE 4.5 21B A3B Thinking

    OpenRouter normalizes requests and responses across providers for you.

    OpenRouter provides an OpenAI-compatible completion API to 400+ models & providers that you can call directly, or using the OpenAI SDK. Additionally, some third-party SDKs are available.

    In the examples below, the OpenRouter-specific headers are optional. Setting them allows your app to appear on the OpenRouter leaderboards.

    Using third-party SDKs

    For information about using third-party SDKs and frameworks with OpenRouter, please see our frameworks documentation.

    See the Request docs for all possible fields, and Parameters for explanations of specific sampling parameters.