Claude Code vs Kiro: how Amazon's coding agent compares for website work

Choose Claude Code if you want Claude models with usage included in a flat Claude plan, and you want to work from a terminal, the Claude desktop app, the web or an IDE extension. Choose Kiro if you want an agent-first IDE from AWS that structures bigger jobs as written specs, lets you pick between Claude, OpenAI and open-weight models, and bills by credits. Both can read a whole website project, edit many files, run commands and work in the cloud, so the real decision is about workflow, models and how you want to pay.

Kiro matters to more people this year because AWS is retiring the Amazon Q Developer IDE plugins and points those users to Kiro. If your team used Q Developer, you will be choosing a replacement anyway.

Everything below is as of October 2026, from each vendor's own pages. Confirm prices and model lists before you buy.

What each tool is

Claude Code is Anthropic's agentic coding tool. In Anthropic's words, it "reads your codebase, edits files, runs commands, and integrates with your development tools," and it runs on the terminal, IDE extensions, a desktop app and the web. It uses Claude models only.

Kiro is AWS's coding agent. Its homepage says it helps teams "turn prompts into executable specs, validate code correctness to find bugs unit tests miss, and build across large codebases with parallel agents." Kiro "works as an agent in the IDE, with a CLI, in a web browser, from mobile app, and in Kiro Crew," and you can log in with GitHub, Google, AWS Builder ID or AWS IAM Identity Center. Kiro's surfaces share "the same unified agent harness."

The practical difference in feel: Kiro's IDE is the center of gravity, and it supports Open VSX extensions and VS Code settings. Claude Code offers a terminal CLI and IDE extensions, plus a desktop app that lets you review changes without opening a code editor.

Side-by-side comparison

Pricing in October 2026

Kiro

Kiro's pricing page lists five plans, per user per month and before tax: Free ($0, 50 credits), Pro ($20, 1,000 credits), Pro+ ($40, 2,000), Pro Max ($100, 5,000) and Power ($200, 10,000). Paid plans can buy add-on credits at $0.04 each, in packs "from $5 (125 credits) to $100." Enterprise is through sales. First-time upgraders through social login or Builder ID get a $20 credit.

Kiro defines a credit as "a unit of work in response to user prompts." Simple prompts can cost under one credit, and models burn credits at different rates. On Kiro's homepage model menu, for example, Claude Sonnet 5.5 is listed at 1.3x the credit cost of Auto and Claude Opus 5.5 at 2.0x. Two rules matter for budgeting: "Unused credits do not roll over to the next month," and "each developer needs their own subscription." Kiro says its pricing has "no daily or weekly rate limits," because credits are the limit.

Claude Code

Claude Code is included in Claude Pro ($20 per month billed monthly, or $17 per month billed annually as $200 up front), Max (from $100 per month, with 5x or 20x Pro's usage), every Team seat (Standard $25 monthly or $20 annually; Premium $125 or $100) and Enterprise (US$20 per seat per month billed annually, 20-seat minimum, plus usage at API rates). Usage resets on five-hour and weekly windows, shared with Claude chat. The free Claude plan does not include Claude Code. Our guide to Claude Code pricing has the full breakdown.

What this means

Kiro's credits make monthly spend predictable, but costly models drain them faster and leftovers expire. Claude's allowance resets on a five-hour window within a weekly cap, which suits steady daily work, but you can hit a limit mid-task. Price a typical week of real work in both.

Claude models inside Kiro

You don't have to choose between Kiro and Claude. Kiro's free tier includes Claude Sonnet 4.5, and paid plans include "premium models, including Auto, Claude Sonnet 5 and Claude Opus 5." Kiro's pricing FAQ lists Anthropic's Opus 5, Opus 4.8, Sonnet 5, Sonnet 4.6, Sonnet 4.5 and Haiku 4.5, and its homepage model menu also shows Opus 5.5 and Sonnet 5.5. The two pages don't match exactly, so check Kiro's models page for the current list in your region. Kiro is "powered by Amazon Bedrock," and its default, Auto, uses "a mix of different frontier models."

One limit to know: Kiro's pricing FAQ says use "through third-party automation harnesses (such as OpenClaw) that route requests outside of Kiro's native interfaces is not permitted." Use Kiro through Kiro's own surfaces or an ACP-compatible editor.

Specs, steering and hooks vs CLAUDE.md, plan mode and hooks

Kiro's signature feature is spec-driven development. Kiro "turns your prompts into requirements, architectural designs, and sequenced tasks," then implements them, and it can check requirements for contradictions and write property-based tests. It also has steering files (it reads AGENTS.md too), hooks, MCP, subagents, skills, powers, checkpoints and a plan mode.

Claude Code covers most of the same ground with different names. A CLAUDE.md file holds your project rules (see our guide to writing a CLAUDE.md for a website). Plan mode has Claude research and propose changes without editing your files until you approve. Hooks run your own checks at set points; our guide to hooks for website projects shows build and link-check examples. Claude Code also has skills, subagents, MCP and checkpoints.

For website work, the difference is weight. Kiro's specs suit a feature with real logic, such as a booking flow, where writing requirements first catches gaps. For a content fix, Kiro has a lighter "vibe mode," and Claude Code's plan mode is a quick check. Neither tool decides your business rules. When we rebuilt eseospace.com (our rebuild case study has the details), a person decided on day one to keep the old theme's JavaScript after a clean rebuild broke animations, menus and widgets. Calls like that belong to people.

Approvals and autonomy

Kiro's IDE defaults to Autopilot mode, which works without asking at each step. Supervised mode stops for approval after each turn with file edits, and permission rules apply in both. From version 2.1.283, Claude Code starts interactive terminal and VS Code sessions in auto mode, where a separate classifier reviews actions, and you can switch to manual approval. On a live site, use the stricter setting and never turn approvals off.

Data and privacy

Kiro's data protection page separates three kinds of user. For Free Tier users and individual subscribers, "Subject to your opt out, content may be used for service improvement," and that can include "model training." A paid plan bought through GitHub, Google or AWS Builder ID login still counts as an individual subscription. For Kiro enterprise users: "We do not use content from Kiro enterprise users for service improvement." You can opt out in the IDE, CLI and web settings.

For Claude Code, Anthropic's data usage page says it trains on Free, Pro and Max data only when the model-training setting is on, and you can turn it off. Under commercial terms (Team, Enterprise, the API), Anthropic "does not train generative models using code or prompts sent to Claude Code" unless the customer opts in. Standard commercial retention is 30 days.

For both, business accounts (Kiro enterprise users; Claude Team, Enterprise and the API) are excluded from training by default, and individual plans need you to check a setting. Our guide to Claude Code data privacy goes deeper. If your site handles client or regulated data, review both vendors' current terms with your own advisers; this is not legal advice.

If you use Amazon Q Developer today

AWS's end-of-support notice says: "On April 30, 2027, AWS will discontinue support for Amazon Q Developer IDE plugins." AWS points users to Kiro and says "everything you rely on today (inline suggestions, chat, and code generation) is available in Kiro." The notice names the IDE plugins; it doesn't say anything about other Q Developer features.

Two details help a Q Developer team decide. Q Developer Pro costs $19 per user per month today. And Kiro's data page says that if you access Kiro through your AWS account with a Q Developer Pro subscription, "Kiro will not use your content for service improvement." That leaves time to pilot Kiro and Claude Code side by side on a copy of your site.

Where each fits website work

Claude Code suits you if:

• You want Claude models on a flat plan and don't need other vendors' models.
• People on your team don't use a code editor. The Claude desktop app lets you review changes without a terminal or code editor.
• You want Anthropic's GitHub Action, which responds when someone mentions @claude in an issue or pull request. (Kiro's headless CLI can also run in CI/CD.)

Kiro suits you if:

• Your developer wants an agent-first IDE with VS Code settings and extensions.
• You want to switch between Claude, GPT and low-cost open-weight models and pay in credits.
• Your company runs on AWS and wants IAM Identity Center sign-in and AWS enterprise controls, which Kiro says include IP indemnity.

Comparing other tools too? See Claude Code vs Cline.

How to decide

1. Name who will run it. An IDE user may prefer Kiro; a marketer may find the Claude desktop app easier.
2. Decide on models. Claude only points to Claude Code. A mix of vendors points to Kiro.
3. Price one real week. Compare Claude plan limits with Kiro credits for the models you would actually pick.
4. Pilot on a copy of the site, in git, with one real task and a person reviewing every diff before anything deploys.

Conclusion

Claude Code and Kiro are both capable agents for website work, and Kiro can even run Claude models. Claude Code is the direct route to Claude on a flat plan, with surfaces for people who don't use an editor. Kiro is an AWS-built, IDE-first agent with specs, a mix of models and credit billing, and it is where AWS points Q Developer plugin users. Pick the one that fits who will use it, test it on a copy of your site, and keep a person approving what ships. If you want help setting up permissions, hooks and a review process for your team, our Claude Code consulting covers that. More guides are in our Claude Code Guide.

Frequently asked questions