How do their growth rates compare?

OnAPI has a month-over-month growth rate of 0%; OpenAI Platform has +27%.

How does pricing compare?

OnAPI: Paid. OpenAI Platform: Paid. Usage-based pay-per-token API billing: GPT-6 Astra at $10/1M input and $50/1M output tokens; GPT-6.1 Sol at $2/1M input and $10/1M output; GPT-6.1 Terra at $1/1M input and $5/1M output; GPT-6 Luna at $0.10/1M input and $0.50/1M output; GPT-Live-1 voice at $0.05/minute; 90% discount on cached inputs and 50% off via Batch API.

What are alternatives to OnAPI and OpenAI Platform?

Other tools in related categories include ChatGPT, Google Gemini, Claude, Adobe Firefly, DeepSeek.

OnAPI vs OpenAI Platform — Traffic, Pricing & Feature Comparison

OpenAITools

OnAPI vs OpenAI Platform — Traffic, Pricing & Feature Comparison | OpenAITools.app

Side-by-Side Traffic & Specification Matrix

Dimension / Metric	OnAPI	OpenAI Platform
Official Domain	onapi.ai	openai.com
Pricing Model	Paid	Paid
Monthly Visits	0 (0)	259.46M (259,461,422)
MoM Traffic Delta	0 (0%)	+55.13M (+27%)
Primary Market & Share	🌐 Global (—)	🇺🇸 United States (25.5%)
Direct Visits / mo	0	111.7M
User Rating	5	4.3
Supported Platforms	Website	Website

OnAPI

One key, every modality—run text, images, video, and code through GPT, Claude, Gemini, Sora, Veo, and Banana from a single endpoint. Two channels, your call: route everyday traffic through the value tier to keep costs down, and flip critical workloads to the official tier when stability matters.

OpenAI Platform

Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents.

GPT-6 & GPT-6.1 Model Lineup with 1.05M Context

Spanning GPT-6 Astra ($10/$50 per MTok), GPT-6.1 Sol ($2/$10), GPT-6.1 Terra ($1/$5), and GPT-6 Luna ($0.10/$0.50), all with a 1,050,000-token context window and 128K max output.

Configurable Reasoning Effort Controls

Tune thinking token budgets per API request across six granularity levels (`none`, `low`, `medium`, `high`, `xhigh`, `max`) to balance latency, accuracy, and cost.

Responses API & Native Computer Use Tools

Combine model inference with hosted web search, file search, function calling, and autonomous GUI computer-use actions in a single stateful API call.

GPT-Live-1 Realtime Voice API

Build ultra-low-latency multimodal voice agents billed per second ($0.05/minute) without rounding up to whole minutes.