By Jakob Steinschaden
Publication Date: 2026-05-19 09:14:00
With the advance of agentic AI tools, Anthropic, OpenAI, and Perplexity have established a new billing model: features that automatically purchase additional credits once the credit budget included in a subscription has been used up. Anthropic calls this “Extra Usage” with “Auto-Reload,” OpenAI refers to it as “Automatic Reload” or “Auto Recharge,” and Perplexity calls it “Auto-Refill.”
The mechanics are similar in all three cases: a stored payment method is charged as soon as a defined minimum balance is reached — without requiring confirmation for each top-up. What is positioned as a convenience feature to prevent workflow interruptions quickly becomes a cost trap with agentic workloads. With more intensive use of agentic capabilities in particular, which consume far more tokens than ordinary search queries, the credits included in a subscription are quickly exhausted — and to continue working, the AI then demands new credits. Or simply picks up again tomorrow.
Perplexity: Auto-Refill with a cap of up to $2,000
Perplexity Max costs $200 per month and includes 10,000 credits per month as well as a one-time launch bonus of 20,000 credits that expires after 30 days. The Auto-Refill feature is disabled by default. When activated, Perplexity automatically purchases additional credits as soon as the balance falls below 500 credits (approximately five dollars). The default monthly cap is $200. In addition, there is a separate account spending cap…
