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Listed in LLM APIs & Models with 25 other toolsPart of 2388+ curated AI tools on AISO
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APIMart

One OpenAI-compatible key for GPT, Claude, Gemini, Sora and Flux, billed pay-as-you-go below list price

paidPay-as-you-go against a prepaid credit balance, with no plan tiers and no monthly minimum. Every model is priced per call or per token and the pricing page publishes APIMart's rate, the model owner's official rate and the percentage saving side by side; the image models listed show a consistent 20% discount — for example gpt-image-2 at ~$0.0085 per image against an official ~$0.010625, rising to ~$0.021 against ~$0.02625 at 4K, and nano-banana-ext at ~$0.0125 against ~$0.015625. Some models, such as seedream-5-0-pro at ~$0.036 per image by default, are listed at APIMart's price only. Credits are shared across every model family and every provider, so one balance covers text, image, video and multimodal calls on a single invoice.View full pricing →

Visit APIMart

https://apimart.ai

About APIMart

APIMart is a unified AI model gateway: one OpenAI-compatible API key that reaches text, image, video and multimodal models from OpenAI, Anthropic, Google, ByteDance, Qwen, Kimi and MiniMax, billed against a single shared credit balance. The pitch to a team already running several vendors is consolidation — keys, invoices, monitoring, rate limits and failover collapse into one interface, and migrating is a base-URL change rather than an SDK rewrite. Health-aware provider routing moves requests off a degraded upstream, and the console exposes spend trend, call distribution, call ranking, token totals and per-key usage so cost attribution does not have to be reconstructed from provider dashboards. The commercial hook is that published per-call prices sit below the model owners' official list prices — the pricing page shows the official figure, APIMart's figure and the resulting saving side by side for every model and every resolution tier, which is unusually legible for this category. There is also an llms.txt endpoint: copy one prompt into Codex, Claude, Cursor or any agent and it learns every model and endpoint available on the platform, which makes the gateway usable from an agent without a human reading docs first. Billing is pay-as-you-go with no plan tiers, so there is no monthly commitment to reach before the discount applies.

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Key Features

One OpenAI-compatible endpoint across seven model vendors
Published per-call prices shown against each vendor's official rate
Health-aware routing and failover between providers
Shared credit balance and one invoice for every model family
llms.txt prompt so an agent can self-configure against the gateway

Tags

llm-apiapi-gatewayopenai-compatiblemodel-routingcost-optimization
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