APIMart

Serves: GPT-5, Claude Sonnet 4.5, DeepSeek V3.2, Gemini + heavy image/video (Sora, Midjourney, Flux)
Billing unit: credits
Converts to tokens: none
Pricing / discount: claims ~20% vs official, 'up to 70%' vs Fal.ai/Replicate

OpenAI-compatible (base api.apimart.ai/v1), but billed in credits with no published credit-to-token conversion, so the advertised saving cannot be verified before paying. This is the entry that prompted the section.