Tool
B
Kiro
AWS-backed agentic IDE built around spec-driven development.
⚠ Preliminary, based on public research, hands-on test pending. These scores come from a desk review of public sources (official pricing pages, docs, changelogs), linked on each tool page. Rex hasn't run the hands-on tests yet, so tiers shown are projected. Under our rubric, a tool's official tier is capped at B until it's tested.
What looks good
- Spec-driven workflow: requirements, design and task lists before code
- Clear credit pricing with fine-grained tiers
Watch-outs
- Small free allowance (50 credits)
- Spec-first flow can feel heavy for quick hacks (to be verified in testing)
From public sources below, not from our own hands-on testing (yet).
Scores
Best AI coding agents B71/100
Rank #8 · projected tier B · official tier B (untested cap) · ⚠ Preliminary
Spec-first workflow is a distinct playstyle. Clear credit tiers, small free allowance.
Pricing as found Oct 15, 2026
| Plan | Price | Notes |
|---|---|---|
| Free | $0 | 50 credits |
| Pro | $20/mo | 1,000 credits |
| Pro+ | $40/mo | 2,000 credits |
| Pro Max | $100/mo | 5,000 credits |
| Power | $200/mo | 10,000 credits |
| Add-on credits | $0.04/credit | Valid 12 months |
Prices in USD, excluding tax. Vendors change pricing often; check the official page before buying.
Sources
- Kiro pricing (kiro.dev)
- Kiro docs: billing (kiro.dev)
Accessed Oct 15, 2026. Spot an error? Request a correction.