Works with Claude Code, Codex, Copilot, Cursor, and any MCP client

Compare AI models
in seconds

Run any prompt against multiple models side-by-side. Get a shareable link. One command to install.

claude mcp add --transport http evvl https://evvl.ai/mcp

Or sign in manually

200+ models via OpenRouter
~1 min to first eval
Free to use

Sponsored by Knowatoa

How It Works

Get started in 60 seconds

1

Paste one command

Copy the MCP add command into your AI agent — Claude Code, Codex, or Gemini CLI.

2

Agent connects your OpenRouter account

Opens a browser link, you click Authorize. That's it — no API keys to manage.

3

Run your first comparison

Just tell your agent what to compare — it calls the right tool automatically.

Get a shareable link

Results are viewable at a unique URL. Share with your team — links expire after 7 days.

Try It Yourself

What will you compare?

Just tell your agent what to compare.

Refactoring
Compare Claude, GPT-4o, and Gemini refactoring this function to use async/await

Find which model writes the cleanest refactored code.

Cost Optimization
Run this system prompt through Llama 3.1 70B and Claude Sonnet and compare quality

See if an open-source model matches a premium one at a fraction of the cost.

Data Extraction
Compare 3 models extracting entities from this text

Get a shareable link so your team can review results together.

Bulk Comparison
Test this prompt against 5 models at once

Stop testing models one at a time in the playground.

Team Decisions
Compare GPT-4o and Claude writing a product launch email

Share the evvl link in Slack and let your team pick the winner.

Classification
Compare o4-mini and GPT-4o classifying these support tickets

Discover that a smaller model might beat the flagship on your task.

Recent Comparisons

FAQ

Common questions

Is Evvl free?

Yes. Evvl itself is free. OpenRouter bills you directly for model usage.

What is MCP?

Model Context Protocol lets AI agents use external tools. Evvl is an MCP server — your agent connects to it to run model comparisons on your behalf.

Which agents work with Evvl?

Claude Code, Codex, Gemini CLI, and any MCP-compatible client.

How many models can I compare?

200+ via OpenRouter — including GPT-4o, Claude, Gemini, Llama, Mistral, and more.

Where are results stored?

Share links are temporary — they expire after 7 days. No permanent data storage.

Who built Evvl?

Evvl was built by the team at Knowatoa.

Start comparing today

One command. No signup required.

claude mcp add --transport http evvl https://evvl.ai/mcp