Arco: the ChatComparison.ai alternative with 400+ models on your own key, not 40 on theirs.
ChatComparison.ai bundles around 40 models into a browser tab and charges $180 a year for it. Arco lets you pick from 400+ models on your own OpenRouter key, pay only for the tokens you actually use, and keeps every chat on your Mac.
The short version
Skip the scroll and get the verdict.
Where Arco wins
- 400+ models via your own OpenRouter key
- Chats stay on your Mac, never uploaded
- Pay only when you use it. No monthly bill
- Pricing on the homepage, not behind signup
Where ChatComparison.ai falls short
- Only ~40 curated models, no BYOK
- Runs in a browser tab, prompts hit their servers
- $180 a year even when you barely use it
- Pricing hidden behind account signup
The verdict
Pick ChatComparison.ai if you're on Windows or Linux, or if you want a browser tab you never have to configure. Pick Arco if you're on a Mac, want access to every model on OpenRouter, care where your chats live, and want to know what something costs before you sign up.
Arco vs ChatComparison.ai, feature by feature
Where each tool wins and where it falls short.
Three reasons people switch
The specific things ChatComparison.ai can't match.
400+ models on your key, not 40 they picked for you.
ChatComparison.ai gives you around 40 models in a curated catalog. Whatever they integrated is what you get, and when a new frontier model ships you wait for them to add it. Arco connects to OpenRouter, so you can pick from 400+ models today and add whatever ships tomorrow by pasting a model ID.
Your chats stay on your Mac. Not in a browser tab that talks to their servers.
ChatComparison.ai runs in the browser and every prompt transits their infrastructure. Their privacy posture isn't published on the landing page. Arco stores everything locally on your Mac. There is no Arco server your prompt has to pass through, because we don't run one.
Pricing you can see before you hand over an email.
ChatComparison.ai doesn't publish pricing on its landing page. You have to create an account and dig into the dashboard to find out what a plan costs. Arco's pricing is on the homepage, one click away. What you see is what you pay: one time.
What you actually pay over 3 years
ChatComparison.ai bundles its subscription with API access. Arco separates them. You buy the app once and pay OpenRouter directly for the tokens you actually use. Here is the breakdown.
(monthly)
(yearly)
The fine print worth knowing
- ChatComparison.ai does not publish pricing on their landing page. We could only find the current numbers by creating an account and opening the dashboard. The prices above are what we saw there.
- A $575 lifetime deal is also on offer. Marked down from $875. That is a one-time payment, but you are still locked into the ~40 curated models they maintain.
- Arco's ongoing cost is your OpenRouter usage. It can be $0 in a light month. ChatComparison.ai bills the flat rate whether you used it or not.
Switching from ChatComparison.ai? Here's how you start.
Three steps, about five minutes total.
Download Arco
Free forever tier, no card, no email required. macOS 13 or later, Apple Silicon.
Add your OpenRouter key
Sign up at openrouter.ai (free account) and paste your key into Arco. That's it. One key, 400+ models.
Ask every model at once
Type your question once. Every selected model answers in parallel. Compare, summarize, copy.
What about my ChatComparison.ai history?
Questions people ask before switching
Straight answers, including where ChatComparison.ai still wins.
Better decisions need better coverage. 400+ models on your key.
Bring your own OpenRouter key and pick from every model on the market. New model drops? Add it yourself in seconds. So you can stop guessing and start deciding.