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Word-Based Pricing

StealthGPT API uses a free-to-start + pay-as-you-go model.

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Billing Model

  • Starter access: $0 to begin after activating API access and adding a payment method
  • Pay-as-you-go rates: After your included/prepaid words are used, standard usage is billed at $0.20 per 1,000 words and business usage at $2.00 per 1,000 words.
  • Tiered billing thresholds: Your invoice threshold starts lower and can advance automatically as spend increases within a billing period.

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API Billing Tiers

StealthGPT API pay-as-you-go accounts start at Tier 1. Each tier sets an automatic invoice threshold, and your account can move to the next tier after reaching the required spend within the current billing cycle.
  • Tier 1 — Invoice threshold: $50. Spend to advance: $200 (to reach Tier 2).
  • Tier 2 — Invoice threshold: $250. Spend to advance: $1,000 (to reach Tier 3).
  • Tier 3 — Invoice threshold: $500. Spend to advance: $2,000 (to reach Tier 4).
  • Tier 4 — Invoice threshold: $1,000. Spend to advance: $4,000 (to reach Tier 5).
  • Tier 5 — Invoice threshold: $5,000. Highest tier (no automatic advancement).
Need custom tier settings, higher invoice thresholds, or tailored billing limits? Email joey@stealthgpt.ai and include your expected billing-cycle usage and required limits.

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Word Consumption Rates

StealthGPT charges by input words + output words for /api/stealthify, with business mode applying a 10x multiplier. /api/stealthify/articles is a flat 50,000 charged words per request. /api/stealthify/agent charges ceil(output words × 10) Stealth API words per successful request (output words are counted from the primary markdown result).
Business mode is currently disabled. All /api/stealthify requests are billed at the standard rate (input words + output words) regardless of the business value sent in the request. The Business row below is retained for reference only.
The business mode uses a model that is 10x more powerful than the standard engine, providing higher quality and more undetectable content, but it consumes words at a higher rate.

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Rate Limits

StealthGPT API has the following rate limits to ensure optimal performance and fair usage:
  • 3,500 RPM (Requests Per Minute)
  • 350,000 WPM (Words Per Minute)

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How to Get Started

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Get Started

  1. Activate API access at stealthgpt.ai/stealthapi
  2. Add a payment method during activation (required before API access is enabled)
  3. Start using the API with free starter access; pay-as-you-go billing applies after starter/prepaid words are exhausted