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Pricing Comparison

View request units details for information about how request units are calculated and when they are consumed.
FeatureFreeDeveloperEnterprise
Price$0/month$10/monthCustom
Included request units50010,000Infrastructure-based
Rate limit25 req/min500 req/min10,000 req/min
Estimated Text Processing time*500-1,000ms150-400ms100-200ms
Estimated Image Processing time*1000-2000ms800-1500ms600-1200ms
SLANone99% uptimeCustom
Additional requests allowedNoYesN/A
Overage billingBlocked at limit$1 per 1,000 unitsInfrastructure-based

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Additional Request Pricing

Additional request units beyond the tier’s included amount cost $1 per 1,000 request units.
Processing time estimates are based on moderate testing under ideal network conditions and may vary depending on system load, network latency, and content size.

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Free Tier

The free tier is designed for experimentation, testing, and hobby projects. This tier requires no billing information and provides access to all API endpoints with lower priority processing. The free tier includes 500 request units per month as a hard limit. Requests beyond this limit are blocked until the next billing cycle or until you upgrade to the Developer tier. Use the free tier to:
  • Evaluate Centure’s prompt injection detection capabilities
  • Build proof-of-concept integrations
  • Develop and test applications before production deployment
  • Run personal projects with low request volume
To handle additional request volume, upgrade to the Developer tier which includes 10,000 request units per month with automatic overage billing for usage beyond the included amount.

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Developer Tier

The developer tier is intended for production applications with small to medium request volumes. This tier provides faster processing, higher rate limits, and an uptime SLA. The Developer tier uses a flat fee with overages pricing model: you pay 10permonthwhichincludes10,000requestunits,andanyusagebeyondthatisautomaticallybilledat10 per month which includes 10,000 request units, and any usage beyond that is automatically billed at 1 per 1,000 request units. Use the developer tier for:
  • Production applications with moderate usage
  • Applications requiring consistent performance and uptime guarantees
  • Development teams building commercial products
  • Projects that need reliable API access with predictable costs
Overage billing is automatic and based on actual usage tracked by Stripe Billing Meters. At the end of each billing period, your invoice will show the $10 base fee plus any overage charges for usage beyond the 10,000 included request units.

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Enterprise Tier

The enterprise tier provides custom deployments for organizations with specific infrastructure requirements. This tier offers the fastest processing times and flexible deployment options. Use the enterprise tier for:
  • Large-scale production deployments
  • Organizations requiring data residency in specific regions
  • Applications needing virtual private cloud deployments
  • Teams with custom performance or compliance requirements
Enterprise billing uses infrastructure-based pricing rather than per-request metering. Contact the Centure team to discuss your infrastructure requirements and receive a custom quote.

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Rate Limits

Rate limits control how many requests your API keys can make per minute. Different tiers provide different rate limits to match usage patterns:
  • Free tier: 25 requests per minute for testing and low-volume projects
  • Developer tier: 500 requests per minute for production applications
  • Enterprise tier: 10,000 requests per minute with custom options available
Rate limits are enforced per organization across all API keys. The limit applies to the total number of requests made within a sliding 60-second window.

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Higher Rate Limits

If your organization requires rate limits beyond the standard tiers, contact the Centure team. We can help raise your rate limit or evaluate deployment options that better match your usage patterns.

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Security and Compliance Add-ons

Centure offers audit logging, SSO, directory sync, and SIEM integrations as optional add-ons. These features are available across all pricing tiers. View pricing for security and compliance add-ons.