GitHub Copilot vs Cursor: you may already be paying for both

The usual framing is Copilot as autocomplete and Cursor as the agent. That was true once. It is now out of date, and the overlap is the most useful thing to understand before renewing either.

What each one actually serves

Both carry models from multiple vendors, and the lists overlap substantially:

Copilot's model surface is wider than most subscribers know, because the only part most people touch is ghost text in the editor. Opus 4.7 in particular is included and almost never used.

The real differences

Cursor is an editor. Copilot is a layer. Cursor is a fork of VS Code with the AI built into the experience -- the diff view, the tab completion, the agent panel. Copilot adds capability to editors you already use, including VS Code, JetBrains, and Neovim. If you have a JetBrains habit you do not want to give up, that decides it.

Cursor's agent is more integrated. Multi-file edits with a review surface designed for them. Copilot's agent has improved substantially but the editor around it was not built for the workflow.

Copilot's allowance is shared with completion. Heavy agent use draws on the same pool as your inline suggestions, which is why ghost text can feel slow during a long run. Cursor separates fast requests from the slow pool more explicitly.

Cursor routes through its own servers. A localhost endpoint is unreachable, so a local router or local model needs a tunnel. Copilot has its own constraint -- a non-standard protocol -- but it is a different one.

The overlap question

Here is the part that saves money.

If you hold both subscriptions, you are paying twice for access to overlapping models. Sonnet 4.5, gpt-5.3-codex, gpt-5.2 and Gemini Flash are all served by each. The unique capacity you get from the second subscription is narrower than the price suggests.

That does not automatically mean cancel one. It means the question is "what does the second one give me that the first does not", and the honest answers are usually:

• Keeping Cursor: the editor experience and the agent surface. That is a product you are buying, not model access.
• Keeping Copilot: breadth of models including Opus 4.7, plus it works in whichever editor you prefer.

If the answer for either is "model access", you are paying for something you already have.

Reaching Copilot's models outside the editor

The reason Copilot's breadth goes unused is that it does not expose a standard API -- it speaks its own protocol, so nothing points at it directly. Bridging that turns a subscription you already hold into a general backend:

npm install -g @sifxprime/krouter
krouter -t

Connect GitHub in the dashboard, then any OpenAI-compatible client reaches the models above:

export OPENAI_BASE_URL=http://localhost:20128/v1
export OPENAI_API_KEY=sk-krouter-local
# model: gh/claude-opus-4.7

This is the move worth trying before adding a second subscription, because it frequently removes the reason for one.

Choosing

Common questions

Does GitHub Copilot include Claude?

Yes -- Opus 4.7, Sonnet 4.5, and Haiku 4.5, alongside the GPT-5 line and Gemini. Most subscribers only use inline completion and never reach the rest.

Is Cursor worth it if I already have Copilot?

If you want the editor and the agent surface, yes -- that is a genuine product. If you want model access, the overlap is large and you may be buying something you already have.

Can I use Copilot models in Cursor?

Not directly. Cursor uses its own backends, and Copilot does not expose an API a third party can point at without translation.

Which has better autocomplete?

Cursor's tab completion is generally considered stronger, and it is one of the clearer things the subscription buys.

Can I use a local model with either?

With neither, straightforwardly. Cursor routes through its own servers, so it needs a publicly reachable URL. Copilot is not configurable that way at all. An open-source extension like Cline is the path if a local model matters.

Related

• Using your Copilot subscription as a model backend
• The true cost of Cursor Pro
• Cline vs Cursor
• Claude Opus 4.7 -- providers and pricing
• Best AI coding assistant in 2026: how to choose