Sinatra vs GitHub Copilot coding agent
GitHub's own asynchronous agent, which its documentation now also calls the Copilot cloud agent. Compared here on the agent that opens pull requests, not on Copilot completions or Copilot Chat in your editor.
This is the closest competitor Sinatra has, and it got closer this year. Copilot's coding agent starts from a GitHub issue, assigns natively from Linear, and bills tokens at the providers' own published rates. Two differences remain and they are the whole argument: Copilot's bring-your-own-key works in your editor and CLI but not in the cloud agent on GitHub.com, and there is no way to point it at a Claude or ChatGPT subscription you already pay for. If you are inside Copilot Business and happy with the credit maths, stay.
- Yes means the vendor's own app starts a run from the issue itself, with nothing to commit to the repo first. Sinatra's trigger is the Sinatra label that ships with the GitHub App install (`sinatraai` on the hosted app). Partial means either that a workflow file and an API-key secret have to be added per repository first, or that the mention only works on pull requests, or that starting from an issue needs a trigger or automation you configure yourself.
- Yes means assigning the ticket to the agent in Linear starts the run. Partial means the run starts some other way: an attachment link you click, or a trigger you configure yourself against Linear's webhooks. Assignment on its own does nothing.
- Yes means a documented HTTP API or MCP server starts a run on the vendor's hosted agent from a task the caller writes, so a script, a CI job, or an MCP client can hand off work and follow it to a pull request. Partial means only the vendor's CLI can start such a run, or the API only fires an automation saved ahead of time, or it is enabled for selected organizations only. Local agent sessions, and MCP servers that only read docs or tickets, don't count. Creating, labeling, or assigning an issue through a tracker's API, so that a tracker trigger or a saved automation picks it up, doesn't count either. Sinatra's MCP server takes an OAuth sign-in from Claude Code, Cursor, claude.ai or ChatGPT, or a personal access token; the HTTP API and the `sinatra` CLI take the token; and every run happens on Sinatra's hosted agent.
- Yes means a changes-requested review is enough on its own: Sinatra reworks the branch and pushes the follow-up commit with no re-trigger and no mention. Partial means the agent acts only when it is @-mentioned in the thread, or only while its original session is still open.
- Yes means your own provider API key runs the agent everywhere the product runs it. Partial means keys work on some surfaces but not the one being compared here, either because the vendor documents them as local-CLI-and-desktop only, or because it never documents them covering its cloud agent at all.
- Yes means a Claude Pro/Max or ChatGPT subscription you already pay for authenticates the run on the vendor's hosted cloud. Partial means it works only where that CLI's login already sits on the machine: your own laptop or a self-hosted backend, not a clean cloud sandbox, or that a linked subscription pays only for one provider's share of a hosted run while the vendor bills the rest.
- Yes means the vendor never charges you for model use itself: it runs on a key or subscription you pay a model provider for, or model use is included in a flat plan and capped by a rate limit or task quota rather than charged. When the vendor is itself the model provider, paying its own API rates on your own key counts as paying your provider. Partial means the vendor bills model use unless you bring your own key on the surface compared here. No means the vendor bills model use, as tokens, credits, or units, at cost or marked up, including usage past an included allowance. Sinatra runs on your own Claude or ChatGPT subscription or API key and never bills for model usage.
- Both halves have to be published: the plan price, and the rate for work past the plan. A published seat price sitting on top of an undisclosed credit, compute unit, or quota size is partial.
- Yes means the free tier states its limits as numbers. Sinatra's Free plan is 1 task at a time, plus 1 queued with no daily limit and no card, on your own subscription or API key; each request runs for up to 60 minutes, and if it needs longer Sinatra stops, keeps the changes, and picks up when you reply. Partial means a free plan exists but its limits are not published, or are published in a unit whose size isn't. No means there is no free tier, or the free tier leaves out the agent compared here.
- Yes means the vendor supplies model access and bills for or includes that usage. Sinatra requires your own workspace API key or personal subscription on every tier, including existing and paid accounts, and does not bill model tokens.
- Yes means an editor plugin or a desktop app; partial means a terminal CLI and no plugin or app of the vendor's own inside an editor. Sinatra is partial: the `sinatra` CLI, and an MCP server that Claude Code, Cursor, claude.ai, ChatGPT and other MCP clients can call, hand work to the hosted agent, which works in its own sandbox and comes back as a pull request. There is no editor extension, and the agent never runs on your machine. If you want an assistant working inside your editor, that is a real reason to pick one of these instead, and several teams run both.
- Yes means mentioning the agent in a Slack channel or thread starts a run on the vendor's hosted agent. Sinatra's Slack app is connected once per workspace by an owner or admin, on every plan: mention it in a channel and it works in that thread, posting its progress and answer there and opening a pull request when the request needs code. Follow-ups in the thread continue the task.
- Yes means you can run the agent on infrastructure you control, or the source is open. Partial means execution or inference can be pointed at your own account or your own machines while the product itself stays the vendor's and stays closed. Sinatra is hosted only; there is no self-managed build.
Competitor facts were read off each vendor's own documentation and pricing pages on September 4, 2026. The “Start a hosted run over API or MCP” row was read on October 13, 2026. Sinatra's terms reflect the current own-credential requirement.
How you start it
- Add the Sinatra label to a GitHub issue. The label ships with the GitHub App install and is named after the app (
sinatraaion the hosted one) - Assign a Linear ticket to Sinatra, or @-mention it in a comment
- Mention @Sinatra in a Slack channel; it works in that thread, and follow-ups in the thread continue the task
- Start a task from your terminal with the
sinatraCLI, from Claude Code, Cursor, claude.ai or ChatGPT over MCP, or over the HTTP API. It runs on Sinatra's hosted agent, not on your machine
- Start from a GitHub issue, the agents tab, the dashboard, or Copilot Chat
- Assign a Linear issue to GitHub Copilot, or mention it in a comment
- Slack, Microsoft Teams, Jira, Azure Boards, and Raycast
- VS Code, JetBrains, Eclipse, Visual Studio, GitHub Mobile, the GitHub CLI, and the REST API
Free: 1 task at a time, plus 1 queued, no daily limit. Bring your own Claude or ChatGPT subscription, or an API key. On Free, each request runs for up to 60 minutes. If it needs longer, Sinatra stops, keeps the changes, and picks up when you reply. No card. Paid plans are one flat monthly price for the whole workspace, however many people are in it: Pro $20 (3 tasks at a time, plus 10 queued), Team $99 (10 tasks at a time, plus 25 queued), Scale $249 (25 tasks at a time, plus 100 queued). Enterprise is custom. Sinatra never bills for model usage.
Sinatra pricing →Free (no cloud agent), Pro $10/mo, Pro+ $39/mo, Max $100/mo, Business $19 a seat, Enterprise $39 a seat, each with an included AI-credit allowance. Past the allowance, usage bills per token at published rates, where 1 AI credit is $0.01.
GitHub Copilot coding agent pricing page →How you start a task
On GitHub these two are now very similar, and pretending otherwise would be dishonest. A GitHub App cannot be an issue assignee, which is why Sinatra uses a label where Copilot, being first-party, does not have to. Different plumbing, same gesture.
Linear used to be the clean line between them. Not any more. GitHub made Copilot's Linear integration generally available in July 2026: assign dropdown, GitHub Copilot, draft pull request, progress on the timeline. That is what Sinatra does. It needs a paid plan.
Where they still diverge is after review. Request changes on a Sinatra pull
request and the follow-up commit lands on its own. Copilot's docs are explicit
that you "mention @copilot in a comment on an existing pull request to ask it to
make changes." One extra step, every round, from the reviewer already in the diff.
What it costs, in dollars
GitHub publishes both halves, which is more than most of this market manages: the plan price, and per-token rates past the included allowance, where one AI credit is one cent. The Anthropic rows match Anthropic's own list prices. Copilot is not marking up your tokens.
So the money argument is not markup. It is ownership. Every token runs through GitHub's billing relationship, which means the Claude Max or ChatGPT plan already on your company card does nothing for your Copilot invoice, and prepaid credits only spend inside Copilot.
Sinatra splits it: $20 a month for the whole workspace on Pro for sandboxes and orchestration, and the model bill on your provider's invoice at their rate. Or nothing, on a subscription you already hold.
Where Sinatra wins
Your key runs the cloud task. Copilot's BYOK covers editors, the CLI, the app, and the SDK; the agent on GitHub.com is on neither the local nor the enterprise list. With Sinatra there is one credential and it works everywhere.
A subscription you already bought can do the work, which Copilot has no equivalent for at any tier. The free tier runs a real task on the same agent paying customers get: 1 task at a time, plus 1 queued, no daily limit, no card. Copilot Free caps completions and excludes the cloud agent entirely, so there is no free way to try it on a real ticket. And review is the instruction, so requesting changes is enough on its own.
Where Copilot wins
Copilot is a first-party feature of the platform your code already lives on, and several of its advantages are structural.
It is already installed. If your org pays for Business, the agent is there, governed by policies you already set, on the identity system you already run. Nothing to procure, no new vendor in the data map. That is worth more than most feature comparisons admit.
It has far more entry points, and four editors with completions and Chat that Sinatra will never offer. Model choice inside the plan is also simpler than bring-your-own-key for teams that do not want to hold provider accounts: pick a model, GitHub bills the tokens at the published rate. And it is one invoice, with budgets and cost centers GitHub already gives you, where Sinatra deliberately hands you two.
Looking for a GitHub Copilot coding agent alternative?
Most people searching this are not unhappy with the output. They are looking at a credit line they cannot forecast, or they already pay for Claude Max and cannot see why they are buying the same tokens twice.
The change Sinatra makes is narrow: the model relationship comes back to you. Connect your key or your subscription and every hosted task runs on it. The plan stays $20 a month for the whole workspace on Pro and does not move with usage or headcount. The trigger stays where it was, a label on a GitHub issue or an assignment in Linear.
If instead you want Copilot in Jira, in Teams, or inside Visual Studio, Sinatra is not the answer and the evaluation doc should say so.
Switching, or running both
Copilot's trigger is an assignment or an agents-panel session; Sinatra's is a label. They do not see each other and neither merges. Hand the same five tickets to both, compare the pull requests, then compare the invoices, counting what your provider billed you directly on the Sinatra side. Copilot prices per seat and Sinatra per workspace, so count people as well as tokens.
Questions people ask about GitHub Copilot coding agent and Sinatra
Can the Copilot coding agent be assigned a GitHub issue?
Yes, and GitHub lists issues alongside Slack, Teams, Jira, Azure Boards, Linear, and four editors. Sinatra uses a label instead, because a GitHub App cannot be an issue assignee.
Does Copilot mark up model tokens?
Not on the published table: rates are in AI credits at $0.01 a credit and the Anthropic rows match Anthropic's list prices. What you cannot do is take the model relationship elsewhere.
Can I use my own API key with the Copilot coding agent?
Not in the cloud. GitHub documents local bring-your-own-key for editors, the CLI, the app, and the SDK, and enterprise BYOK for Chat, the CLI, and IDEs; the agent on GitHub.com is on neither list.
Is Copilot cheaper than Sinatra?
For one person inside a Copilot plan, probably: Business is $19 a seat with the agent and an AI-credit allowance included. Sinatra Pro is $20 a month for the whole workspace, however many people are in it, with models on your own provider's bill. So it changes with headcount, and with models: if your developers hold Claude Max or ChatGPT plans, Sinatra's model line is zero.
Where these facts came from
Every mark on this page comes from GitHub Copilot coding agent's own documentation and pricing pages, not a third-party roundup: read on September 4, 2026, except the “Start a hosted run over API or MCP” row, read on October 13, 2026. Sinatra's side of this page was last updated on October 15, 2026. If something here is out of date or wrong, tell us and we will fix the page.