Kiro Credit Calculator

Kiro bills in credits, and the model you pick multiplies how fast they go. This calculator turns a rough sense of your working day into a monthly credit number and the cheapest plan for it. The multipliers and plan prices are the ones on Choosing a Model and Credits & Pricing, checked against kiro.dev on the date at the bottom of this page.

Model you'll pick Auto (router) · 1.0xClaude Opus 5.5 · 2.0xClaude Opus 5 · 2.2xClaude Opus 4.8 / 4.7 / 4.6 · 2.2xClaude Opus 4.5 · 2.2xClaude Sonnet 5.5 · 1.3xClaude Sonnet 5 · 1.3xClaude Sonnet 4.6 · 1.3xClaude Sonnet 4.5 · 1.3xClaude Haiku 4.5 · 0.4xOpenAI GPT-5.6 Sol · 4.4xOpenAI GPT-5.6 Terra · 2.2xOpenAI GPT-5.6 Luna · 0.6xKimi K3 · 2.4xGLM-5 · 0.5xDeepSeek 3.2 · 0.25xMiniMax M2.5 · 0.25xMiniMax M2.1 · 0.15xQwen3 Coder Next · 0.05x Share of your work on that model: 100% The rest stays on Auto (1.0x).

How much you use Kiro

Hobbyist Full-time Heavy / parallel agents

Credits a day, measured on Auto Days a month

0 credits a month

Plan	Included	Your month would cost

How the estimate works

Start from how many credits a normal day would cost on Auto, the 1.0x baseline. Multiply by the model’s multiplier for the share of work you send to that model, keep the rest at 1.0x, and multiply by the days you work. A full-time day of 40 credits on Auto becomes about 88 on Opus 5, 80 on Opus 5.5, 52 on Sonnet 5, and 16 on Haiku 4.5.

For the plan, each paid tier costs its price plus $0.04 for every credit past its allowance (individual plans top up with add-on packs at that rate). The Free plan is different: it stops at 50 credits and only covers Claude Sonnet 4.5 and the open-weight models, so the calculator only offers it when your whole month fits those limits.

What the calculator does not capture

• Reasoning effort. Lower effort spends fewer credits on the same model, but Kiro does not publish a ratio, so the calculator cannot apply one. Treat effort as a way to come in under the estimate. See set the reasoning effort.
• Bonuses. New accounts get 500 bonus credits for 14 days, and the first upgrade from Free applies a $20 credit. Both make month one cheaper than the estimate.
• Unattended work. Headless CLI runs, hooks, and background workflows spend credits with nobody watching. Add them to your daily number if you run them.
• Team plans. They mirror the individual prices and can enable automatic overage at the same $0.04 rate.

Credits do not roll over, so size the plan for a typical month rather than your busiest one. Credits & Pricing explains the rules behind each number here.