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AI · head to head

Aider vs Copilotly

A

Aider

AI

AI pair programming in your terminal

From
Free
Rated
-
Full reviewWebsite
Copilotly logo

Copilotly

AI

131 specialist AI copilots across 20 professional domains

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Aider requires comfort working in a terminal rather than a graphical IDE; Copilotly copilotly explicitly disclaims that its legal, medical, and financial copilots are not a substitute for licensed professional advice, which limits its use for anything requiring accountable expert sign-off.
  • They diverge on capability: Aider covers Multi-LLM support, Copilotly covers 131 specialist copilots.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Aider and Copilotly actually diverge.

Attributes where Aider and Copilotly differ
AttributeAiderCopilotly
Pricing modelopen-sourcefreemium
Platformsmac, linux, windows, apiweb, ios, android, windows, mac
Founded2023Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (AI).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Aider

  • Multi-LLM support
  • Repository mapping
  • Git integration
  • Voice-to-code
  • Lint and test automation
  • Image and web context
  • Free provider access
  • Editor file-watching

Only in Copilotly

  • 131 specialist copilots
  • Browser extension
  • Multi-model routing
  • Document upload and analysis
  • Encrypted conversations
  • Desktop and mobile apps
  • Admin dashboard and usage analytics
  • SSO and SAML

What people use each for

The jobs each tool is most often brought in to do.

Aider

  • Editing an existing codebase from the terminalnot Copilotly
  • Pairing with an LLM on a new projectnot Copilotly
  • Automating git-committed code changesnot Copilotly
  • Working across many programming languagesnot Copilotly
  • Bringing your own LLM API key to a coding workflownot Copilotly

Copilotly

  • Getting a quick legal or contract question answered without booking a consultationnot Aider
  • Drafting and reviewing professional documents with domain-specific guidancenot Aider
  • Researching medical, financial, or HR questions with a specialist-tuned assistantnot Aider
  • Working across many knowledge-work tasks under one subscription instead of separate toolsnot Aider
  • Getting AI help directly inside the browser while reading any webpagenot Aider

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Aider

  • Requires comfort working in a terminal rather than a graphical IDE
  • Has no hosted or managed version, so users must supply and pay for their own LLM API access separately
  • Depends heavily on the chosen underlying model's quality, so results vary by which LLM is configured
  • Lacks a built-in autonomous multi-step task runner comparable to agent-style products

Copilotly

  • Copilotly explicitly disclaims that its legal, medical, and financial copilots are not a substitute for licensed professional advice, which limits its use for anything requiring accountable expert sign-off.
  • The free plan caps usage at 3 copilots and 50 messages per day, pushing most real usage onto the paid Pro tier.
  • It relies on third-party foundation models (GPT-4o, Claude, Gemini, DeepSeek) rather than proprietary domain models, so answer quality is bounded by those underlying models.
  • There is no published documentation site or API, limiting integration options for developers or teams wanting to build on top of it.
  • Safari support is listed as 'coming soon' rather than available, so macOS/iOS Safari users are currently unsupported in-browser.

Pricing, plan by plan

Aider

Free

No published plan breakdown. See the Aider review.

Copilotly

Free
  • FreeFree
    • Access to 3 copilots of your choice
    • 50 messages per day
    • Conversation history
  • Pro$29/month
    • Every copilot unlocked (131 across 20 domains)
    • Unlimited messages
    • Also billed $4.99/week or $290/year
  • Enterprise$undefined/month
    • Everything in Pro
    • Unlimited team members
    • Custom copilots on your own data

Which should you pick?

Choose Aider if

  • You need multi-llm support.
  • You want to start without paying.
  • You work on mac, linux, windows, api.
  • You also want repository mapping.
Aider review

Choose Copilotly if

  • You need 131 specialist copilots.
  • You want to start without paying.
  • You work on web, ios, android, windows, mac.
  • You also want browser extension.
Copilotly review

Questions people ask

Is Aider or Copilotly better?
Neither clearly leads. Aider starts at Free and Copilotly at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Aider or Copilotly?
Aider starts at Free and Copilotly at Free.
Does Aider or Copilotly run on more platforms?
Aider runs on mac, linux, windows, api. Copilotly runs on web, ios, android, windows, mac.
Can I use Aider for free?
Both have a free tier, so you can try either at no cost before committing.
What is Aider best used for?
Aider is most often used for editing an existing codebase from the terminal, pairing with an llm on a new project, automating git-committed code changes, working across many programming languages. Of those, editing an existing codebase from the terminal and pairing with an llm on a new project are not what Copilotly is typically brought in for.
What can Aider do that Copilotly cannot?
Aider covers Multi-LLM support, Repository mapping, Git integration, Voice-to-code. Copilotly covers 131 specialist copilots, Browser extension, Multi-model routing, Document upload and analysis.

Answered from the vendors’ own pages

Aider: Is Aider free to use?

Aider itself is free and open source, released under the Apache 2.0 license. Users must separately supply and pay for API access to the LLM they choose to use with it.

Source
Copilotly: What do you get on the free plan?

Three copilots of your choosing, 50 messages a day, conversation history and the browser extension. No card and no time limit: the 50 messages are a daily cap that resets rather than a total.

Source
Aider: Which LLMs can I use with Aider?

Aider connects to OpenAI, Anthropic, Gemini, GROQ, DeepSeek, Ollama, Azure, Cohere, xAI, GitHub Copilot, Vertex AI, Amazon Bedrock, OpenRouter and most other LLM providers via API keys.

Source
Copilotly: How much is Pro, and is annual cheaper?

Pro bills three ways: $4.99 a week, $29 a month, or $290 a year. The annual cycle works out at about $24.17 a month, so it is the cheapest of the three.

Source
Aider: Can I use Aider for free without paying for an LLM API?

Yes, Aider can be used at no cost through OpenRouter's free model access (subject to daily usage limits) or Google's Gemini 2.5 Pro Exp, which the docs note performs well without a paid API key.

Source
Copilotly: Can I try it before paying, and can I get a refund?

Pro has a three-day free trial and a seven-day money-back guarantee. Subscriptions can be cancelled at any time with no cancellation fee.

Source
Aider: How does Aider handle version control?

Aider automatically stages and commits each change it makes to a connected git repository, generating a descriptive commit message for every edit so changes stay reviewable and reversible.

Source
Copilotly: Which models does Copilotly run on?

It routes to third-party foundation models rather than its own: GPT-4o, Claude, Gemini and DeepSeek. Answer quality is therefore bounded by whichever of those handles a query.

Source
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