Image inputs

msg := openrouter.CreateMultiModalMessage(
    "user",
    "What's in this image?",
    "https://example.com/image.jpg",
)
resp, _ := client.ChatComplete(ctx, []openrouter.Message{msg},
    openrouter.WithModel("openai/gpt-4o"),
)

For multiple images or base64 data URLs, build []ContentPart directly — see examples/image-inputs/main.go.

The model must support vision. Check ListModelEndpoints or the OpenRouter models page.