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Credits

Mythex uses one credit balance for the coding agent (chat) and for published-app hosting, database, and app storage. Bandwidth is included — we don’t bill egress. Usage charts still show Build vs Run as categories — not separate wallets.

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Grants

Face value: 1 credit ≈ $0.25 of charged usage. Daily credits (Free 10 or Pro 5) appear on Plans & credit usage as remaining today (e.g. “10 left · Resets at midnight UTC”). They are granted when you open Mythex that UTC day — not at the stroke of midnight, and not for days you skip. Unused daily credits expire at midnight UTC and do not count toward the monthly cap. The Pro 100/mo grant does not expire overnight. If you used yesterday’s Free credits, we email you in the morning that today’s 10 are ready. We don’t email if you still had most of yesterday’s 10 unused, if you already opened Mythex today, or if you’ve hit the 30/mo cap. Unsubscribe from the email footer anytime (transactional mail like password reset still sends).

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How charging works

  • Build (agent): deducted from your credit balance. Everyone uses the same Standard coding agent. See Plans.
  • Run (hosting / DB / storage): deducted from the same balance.
Per-message costs are not shown in chat — check your balance in the workspace menu or on /billing.

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Running out

When credits hit zero:
  • Chat is blocked until you upgrade, buy credits (Pro), or wait for the Free daily grant
  • Preview + terminal stay available
  • Published (LIVE) apps pause on Free and Pro (Fly machines stopped; Neon and files stay) — Free cannot top up; Pro can. You’ll see an in-app nudge. We email you when credits run low, when a LIVE app pauses, and when it comes back online.
If you cancel a paid Pro plan, leftover credits stay on the account. You can still spend them on chat, Preview, and hosting. Pro-only features (code edit, GitHub, export, custom domain, top-ups) lock when the plan returns to Free.

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Outside the subscription

Billed separately from Free/Pro:
  • Domain registration (buy in Mythex)
  • Credit top-ups (Pro)
Auto top-up is on the roadmap (not available yet).

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Usage

Open Usage details (/billing/usage) for the last 30 days:
  • Build — agent spend
  • Run — hosting + database
  • Breakdown by project
See Usage.

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Tips

  • Prefer precise prompts over “rebuild everything”
  • Use Plan mode when exploring large changes
  • Fix Preview errors with targeted asks