Pro
$20/mo
Limits 1,000 credits/user/month; add-on credits $0.04/credit.Source: kiro.dev · checked 2026-10-16
Kiro vs Codex: pricing and usage limits (Oct 2026)
Kiro starts at $20/mo, Codex at $8/mo. Both have a free plan. Every plan from both vendors, the limits each one actually publishes, and what changed recently, with a source on every line.
The short answer
Verdict from the data
- Cheaper to start
- Codex. ChatGPT Go (Codex) is $8/mo; the cheapest Kiro plan, Kiro Pro, is $20/mo ($12 more).
- Free plan
- Both have one. What each includes is quoted under Free plans below.
- Top of the ladder
- Kiro Power at $200/mo vs ChatGPT Pro (Codex) from $100/mo.
Pick Codex if you want the lowest monthly bill. Beyond price and free access, the deciding factor is which models and features you need; we track the money, not the model quality.
Head to head
| Fact | Kiro | Codex |
|---|---|---|
| Free plan | Free tier | Free tier |
| Cheapest plan | Pro · $20/mo | Go · $8/mo |
| Top plan | Power · $200/mo | Pro ($100/$200/$500) · from $100/mo |
| Plans tracked | 4 | 4 |
| Yearly discount | None shown | None shown |
| Allowance periods | Monthly | 5-hourWeekly |
| Latest change | None logged | None logged |
| Last checked |
Closest price match: Kiro Pro vs ChatGPT Plus (Codex)
Plus
$20/mo
Limits Estimated local messages per 5 hours: GPT-6 Astra 5-45; GPT-6.1 Sol 15-160; GPT-6 Sol 15-150; GPT-6 Luna 350-3,000. Weekly limits may also apply. Shared with ChatGPT Work.Source: developers.openai.com · checked 2026-10-16
Every plan side by side
| Tool | Plan | Price | Limits as stated & source |
|---|---|---|---|
| Kiro | Pro | $20/mo | 1,000 credits/user/month; add-on credits $0.04/credit. Source: kiro.dev · checked 2026-10-16 |
| Kiro | Pro+ | $40/mo | 2,000 credits/user/month; add-ons $0.04/credit. Source: kiro.dev · checked 2026-10-16 |
| Kiro | Pro Max | $100/mo | 5,000 credits/user/month. Source: kiro.dev · checked 2026-10-16 |
| Kiro | Power | $200/mo | 10,000 credits/user/month. Source: kiro.dev · checked 2026-10-16 |
| Codex | Go | $8/mo | GPT-6 Luna at Standard speed in the desktop app (lightweight tasks). Caps not published. Source: developers.openai.com · checked 2026-10-16 |
| Codex | Plus | $20/mo | Estimated local messages per 5 hours: GPT-6 Astra 5-45; GPT-6.1 Sol 15-160; GPT-6 Sol 15-150; GPT-6 Luna 350-3,000. Weekly limits may also apply. Shared with ChatGPT Work. Source: developers.openai.com · checked 2026-10-16 |
| Codex | Pro ($100/$200/$500) | $100/mo | 'Pro plans currently have no five-hour limit'; weekly allowances vary by tier (not published). Ultrafast mode on Pro $500 only. Source: developers.openai.com · checked 2026-10-16 |
| Codex | API key | API token pricing | Pay per token; no cloud features (GitHub code review, Slack). Source: developers.openai.com · checked 2026-10-16 |
Free plans
| Tool | Free? | What you get for $0 & source |
|---|---|---|
| Kiro | Free tier | Kiro Free (perpetual): 50 credits per month. Social-login/Builder ID free users get Claude Sonnet 4.5 and open-weight models. $20 credit on first upgrade. Source: kiro.dev · checked 2026-10-16 |
| Codex | Free tier | Free $0: GPT-6 Luna at Standard speed in the desktop app, 'subject to rollout'. No image generation on Free. Source: developers.openai.com · checked 2026-10-16 |
Recent price and limit changes
No price, limit or free-tier change logged for Kiro or Codex yet. We check both vendors' pages daily.
Questions people ask
Which is cheaper, Kiro or Codex?
Codex is cheaper to start: ChatGPT Go (Codex) costs $8/mo, against $20/mo for Kiro Pro. At the top end, Kiro Power is $200/mo and ChatGPT Pro (Codex) is from $100/mo.
Is Kiro or Codex free?
Kiro: Yes. Kiro Free (perpetual): 50 credits per month. Social-login/Builder ID free users get Claude Sonnet 4.5 and open-weight models. $20 credit on first upgrade. Codex: Yes. Free $0: GPT-6 Luna at Standard speed in the desktop app, 'subject to rollout'. No image generation on Free.
How do the usage limits compare at the closest price?
Kiro Pro ($20/mo): 1,000 credits/user/month; add-on credits $0.04/credit. ChatGPT Plus (Codex) ($20/mo): Estimated local messages per 5 hours: GPT-6 Astra 5-45; GPT-6.1 Sol 15-160; GPT-6 Sol 15-150; GPT-6 Luna 350-3,000. Weekly limits may also apply. Shared with ChatGPT Work.
When did Kiro and Codex last change their pricing?
No change is logged for either since we started tracking. Prices were last checked 2026-10-16.
Free to cite. All data is CC BY 4.0: quote, embed or republish it with a link to AI Plan Tracker. Raw data: tools.json · changes.json. Spotted an error? Every fact links to its source and the date we checked it.