Sinatra vs Kiro
AWS's agentic IDE and its autonomous agent. Compared here on the autonomous agent that works GitHub issues, not on the Kiro editor or its spec-driven workflow.
On GitHub these two behave almost identically: install a GitHub App once for the org, label an issue, get a pull request, and have review comments acted on. Kiro also brings a real IDE and a spec-driven workflow Sinatra has no answer to. The split is cost and tracker. Every Kiro run is metered in credits with no published conversion from a credit to a token, there is no way to supply your own key or subscription, and there is no Linear.
- 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 and not on issues.
- 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 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.
- Yes means you are never charged a marked-up model rate, either because you pay your provider directly, or because the vendor publishes the same per-token rates the provider does, or because model use is included in a flat plan with a published allowance. Partial means the answer depends on which plan you are on: no fee on the individual tiers, a published per-token fee on the team ones, charged even against your own key.
- 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 daily allowance as a number. Sinatra's is 5 tasks a day with your own key or a Codex subscription, 1 a day on Sinatra's keys, no card. Partial means a free plan exists but its allowance is not published.
- Yes means you can run without supplying a model key at all, because the vendor bills you for the model.
- Yes means an editor plugin or a desktop app; partial means a terminal CLI and nothing that runs inside an editor. Sinatra has neither, on purpose: the work starts in the tracker and comes back as a pull request. If you want an assistant inside your editor, that is a real reason to pick one of these instead, and several teams run both.
- Sinatra has no Slack trigger. GitHub and Linear are the only two ways to start a run, and a Slack-first team should weigh that.
- 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 while the product itself stays the vendor's and stays closed. Sinatra is hosted only; there is no self-managed build.
Read off each vendor's own documentation and pricing pages on September 4, 2026.
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
- Add the
kirolabel to a GitHub issue, or comment /kiro on it - The Kiro web app, with autonomous mode toggled on
- The Kiro IDE
$20 per member per month for hosted sandboxes and orchestration, with model cost passed through at provider rates and no markup. Free tier: 5 tasks a day with your own key or Codex, 1 a day on ours. No card.
Sinatra pricing →Free $0 with 50 credits, Pro $20 a user a month with 1,000 credits, Pro+ $40 with 2,000, Pro Max $100 with 5,000, and Power $200 with 10,000. Add-on credits are $0.04 each and Enterprise is contact-sales. A credit is a Kiro unit with no published token conversion, so a task's cost is knowable only after it runs.
Kiro pricing page →How you start a task
Kiro and Sinatra do the GitHub half the same way, and it is the right way: an App installed once per organization, then a label on an issue. Both open a branch, commit, and raise a pull request.
Kiro is good on the review loop too. Its autonomous mode page says the agent "automatically addresses your comments and pushes updates," and Sinatra does the same from a changes-requested review. Call this row a tie.
Two things are missing on Kiro's side. There is no Linear, and autonomous mode in the web app is started by toggling it in the chat input before you submit, which is a person at a keyboard rather than a handoff.
Kiro has something Sinatra does not, though, and it is not small: Kiro is an IDE. The agent is one mode of a product you also write code in.
What it costs, in dollars
Kiro publishes both halves, which is more than several vendors here manage. What is not published is the bridge between them: how many credits a task consumes, and what a credit is in tokens. So $0.04 is a real price for a unit whose size you learn by spending it.
Sinatra's two numbers are $20 per member per month and your provider's own published rate, billed by them with nothing added. Fifty free Kiro credits is a look; Sinatra's free tier is 5 tasks a day with your own key or Codex, 1 a day on ours. No card. and it renews every day.
Where Sinatra wins
Your key runs your models: Anthropic, OpenRouter, a Claude subscription, a Codex
or ChatGPT subscription, pinned per repository in a committed .sinatrarc. Kiro
gives you a model menu inside its own credit system and no way to bring your own.
That also makes the token bill readable, with provider rates on a provider
invoice and no unit in between whose size is undocumented.
Linear is a first-class trigger, where Kiro's agent does not connect to Linear at all. The free allowance is daily and renews tomorrow, where fifty credits do not. And repository-level configuration lives in the repository rather than a workspace setting.
Where Kiro wins
It is an IDE, and a distinctive one. Kiro's spec-driven workflow, turning a prompt into requirements, a design, and a task list before implementation, is a genuinely different idea about how to work with an agent, and you get it in an editor rather than only in a tracker. Sinatra has phases that rhyme with it but no editor at all.
Its free tier has Claude Sonnet 4.5 in it. Fifty credits and a real frontier model, with no card and no provider account, is a low bar to clear for finding out whether any of this works on your codebase.
There are also no credentials to manage: no key to rotate, no provider account, no second invoice. For a team that does not want to run model credentials, the credit system is the feature rather than the tax. AWS is behind it, so procurement, security review, and billing go through a vendor most enterprises already have a contract with, which is worth more inside a large company than any row in the table above. And Kiro supports GitLab, where Sinatra is GitHub-only.
Looking for a Kiro alternative?
The two reasons people search this are the credit system and the missing tracker.
On cost, Sinatra does not sell you a unit. The seat is $20 per member per month and the model bill is your provider's, on their invoice, so "what did that ticket cost" has an answer you can look up rather than infer. If your team already pays for Claude or ChatGPT, the model half is already bought.
On the tracker, if your board is in Linear, Kiro cannot see it. Sinatra installs a Linear app you assign tickets to and keeps the GitHub label trigger you are used to, so moving does not mean giving up the GitHub half.
If you are on Kiro for the IDE and the spec workflow, keep it. Sinatra does not replace an editor and does not try to.
Switching, or running both
The two triggers cannot see each other: kiro on one label, Sinatra on another,
with both Apps installed on the same organization. Since the GitHub trigger is
nearly identical, the useful test here is really a model test. Put the same five
tickets through both, with Sinatra pointed at whatever model you would run in
anger, and read the ten pull requests. If Kiro's credits get you results you like
and you never wanted to hold an API key, that is a reasonable place to land.
Questions people ask about Kiro and Sinatra
How do you start a Kiro autonomous task from GitHub?
Add the `kiro` label to an issue or comment /kiro. The Kiro Agent GitHub app only needs to be installed once per organization, which is the same shape as Sinatra's install.
Can Kiro use my Anthropic key or Claude subscription?
No. Kiro's plans include model access as credits, and its documentation describes no bring-your-own-key path.
What does a Kiro task cost?
Unknown until it runs. Plans publish credits and add-ons are $0.04 each, but how many credits a task consumes and what a credit is in tokens are not published.
Does Kiro work with Linear?
Not in its documentation. The autonomous agent connects to GitHub and GitLab, and neither Linear nor Slack appears in its integration docs.
Where these facts came from
Every mark on this page was read off Kiro's own documentation and pricing pages on September 4, 2026, not from a third-party roundup. If something here is out of date or wrong, tell us and we will fix the page.