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Every plan includes the Sixth agent, all its tools, and access to the frontier models through your Sixth account. Plans differ in how much you can use and how fast.
Prices below are current launch prices. Check app.trysixth.com/pricing for the latest, and to upgrade.

Monthly and yearly plans

Unlimited plans

Upgrading

You can upgrade at any time from the pricing page, from your dashboard, or from the upgrade prompts in the extension. Upgrades take effect immediately. When you move from a paid plan to Unlimited Yearly or Unlimited for Life, what you’ve paid for your current plan’s billing period is credited toward the new plan, so you only pay the difference. For example, moving from a 100UltramonthtoUnlimitedYearlycosts100 Ultra month to Unlimited Yearly costs 1,150 instead of $1,250.
The credit only applies to an active, paid-up subscription. A subscription that’s been canceled or has an unpaid invoice doesn’t earn a credit.

Payment

Payments are processed securely by Stripe. Subscriptions renew automatically until you cancel, and you can cancel at any time from your dashboard. Unlimited for Life is a single one-time payment.