Posts tagged billing

4 posts about billing.

• Long-Context Pricing Tiers: Up to 6.7x, and Gateways Never Show It

  September 2, 2026 · long-context · api-pricing · context-window · billing

  Through one aggregator, nine tiered models billed up to 6.7x past lines their pages never mention, and one endpoint billed 1.25x its listing. How to stay under.

• AI API Billing Units: 17 Meters from Tokens to PTU-Hours

  August 30, 2026 · billing · api-pricing · cost-observability

  The same API dollar is metered 17 ways: tokens, characters, minutes, GB-days, token-hours, PTU-hours. A field guide with the gotchas that bite billing code.

• Prompt Cache Write Cost: When Does the 1.25x Premium Pay?

  July 30, 2026 · prompt-cache · cache-write · billing · pricing

  One measured agent suite, one premium: a 6% loss on RAG, an 83% saving on batch. The read:write ratio decides, and you can measure yours before the invoice.

• Image Generation API Cost: 5 Models Compared ($0.006-$0.039)

  June 19, 2026 · image-generation · billing · llm-gateway · cost

  Five image models, same prompts, one gateway: $0.006 to $0.039 per image at defaults, plus a quality knob that swings one model's bill 36x. Measured.