# yaml-language-server: $schema=https://promptfoo.dev/config-schema.json description: Image Classification Example of Fashion MNIST dataset providers: - openai:chat:gpt-4o - openai:chat:gpt-4.1-mini prompts: - label: Image Classification raw: file://prompt.js config: response_format: type: json_schema json_schema: name: image_classification schema: type: object properties: classification: type: string enum: [ 'T-shirt/top', 'Trouser', 'Pullover', 'Dress', 'Coat', 'Sandal', 'Shirt', 'Sneaker', 'Bag', 'Ankle boot', ] color: type: string features: type: string style: type: string confidence: type: integer reasoning: type: string required: - classification - color - features - style - confidence - reasoning additionalProperties: false defaultTest: assert: - type: is-json value: type: object properties: classification: type: string color: type: string features: type: string style: type: string confidence: type: integer reasoning: type: string - type: javascript value: 'output.classification === context.vars.label' metric: accuracy tests: file://fashion_mnist_sample_base64.csv