Evvl - Compare AI Models Side-by-Side

Compare

Run a side-by-side AI model comparison. Returns a shareable URL with results. If no models are specified, defaults to the newest model from Anthropic, OpenAI, and Google. If the user names a specific model/version, call list_models first to verify — don't substitute based on assumed cutoffs. Only concrete versioned model IDs are accepted (e.g. "anthropic/claude-opus-4.7"); "*-latest" alias IDs are rejected by OpenRouter and are not returned by list_models.

List Models

List available AI models from OpenRouter. With no parameters, returns recommended flagship models. Use query/filter parameters to search 200+ models by name, modality, context length, or price.

My Comparisons

List your recent comparisons with share URLs.

Connect Provider

Get a URL to connect an API provider (e.g., OpenRouter) to your Evvl account. Open the URL in a browser to complete the connection.

Check Status

Check your Evvl account status: connected providers, usage, and account info.

Create Dataset

Create a named, reusable dataset from CSV data. The first row of the CSV defines variable names that can be used as {variable} placeholders in prompt templates with compare_batch.

List Datasets

List your saved datasets with their columns, row counts, and IDs.

Delete Dataset

Delete a dataset by name or ID.

Compare Batch

Run a prompt template against every row in a dataset, across multiple models. Use {column_name} placeholders in the prompt template to substitute values from each dataset row.