Send images, PDFs, and audio to Infron AI models
Infron AI supports multiple input modalities beyond text, allowing you to send images, PDFs, and audio files to compatible models through our unified API. This enables rich multimodal interactions for a wide variety of use cases.
Send images to vision-capable models for analysis, description, OCR, and more. Infron AI supports multiple image formats and both URL-based and base64-encoded images.
Learn more about image inputs →
Process PDF documents with any model on Infron AI.
Learn more about PDF processing →
Send audio files to speech-capable models for transcription, analysis, and processing.
Learn more about audio inputs →
All multimodal inputs use the same /v1/chat/completions endpoint with the messages parameter. Different content types are specified in the message content array:
Images: Use image_url content type
PDFs: Use file content type with PDF data
Audio: Use input_audio content type
You can combine multiple modalities in a single request, and the number of files you can send varies by provider and model.
Not all models support every modality.
Vision models: Required for image processing
File-compatible models: Can process PDFs natively or through our parsing system
Audio-capable models: Required for audio input processing
Use our Models page to find models that support your desired input modalities.
Infron AI supports both direct URLs and base64-encoded data for multimodal inputs:
Images: https://example.com/image.jpg
PDFs: https://example.com/document.pdf
Audio: Not supported via URL (base64 only)
Images: data:image/jpeg;base64,{base64_data}
PDFs: data:application/pdf;base64,{base64_data}
Audio: Raw base64 string with format specification
URLs are more efficient for large files as they don't require local encoding and reduce request payload size.
Base64 encoding is required for local files or when the content is not publicly accessible.
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