# Capacity vs OpenAI Platform

Capacity records 24,300 monthly visits with -22.9% month-over-month growth and Free Trial pricing. OpenAI Platform records 234,678,639 monthly visits with -9.6% growth and Paid pricing.

| Metric | [Capacity](https://openaitools.app/tool/capacity) | [OpenAI Platform](https://openaitools.app/tool/openai) |
| :--- | :--- | :--- |
| Website URL | https://capacity.so | https://openai.com |
| Categories | AI App Builder, AI Website Builder, No-Code&Low-Code, AI Code Generator | AI Models, AI API, Large Language Models (LLMs), AI Chatbot |
| Pricing Model | Free Trial | Paid |
| Monthly Visits | 24,300 | 234,678,639 |
| MoM Growth Rate | -22.9% | -9.6% |
| Primary Market | United States | United States |
| Direct Visits | 9,892 | 105,101,079 |
| Review Score | 4.2 | 4.8 |
| Saved Count | 0 | 144 |
| Supported Platforms | Website | Website |

## Capacity

Capacity is a no-code builder focused on getting an idea to a working app quickly. You explain what you want in everyday language, Capacity asks the right clarifying questions, and then it generates the front-end pages, data structures and authentication for you. Changes are requested through a chat, appear in the live preview immediately, and a single click puts the app online at a shareable link or a domain you own. The company markets the same flow for landing pages, MVPs, stores, scheduling tools and internal apps.

A distinctive part of the product is that it can be driven by the AI subscription you already pay for. After adding Capacity to Claude or ChatGPT, the assistant writes the code through the chat while Capacity provides hosting, database, domains and version history. Building that way is unlimited on every paid plan because it does not draw on Capacity credits; credits only power the built-in Capacity agent, where simpler requests cost fewer credits and complex builds cost more. Credits never expire, and you can switch between the built-in agent and your own AI at any time with version history following along.

The offering is squarely aimed at solo founders, small businesses and non-technical creators who want a live product without hiring developers. Pricing runs from $25 to $299 per month across Starter, Growth, Professional and Business tiers. Capacity also emphasises ownership: the app, its data and its members belong to you, you can attach your own domain, and you can download the full codebase if you ever want to move.

**Pricing & Plans:** Capacity is paid, with plans starting at $25/month (Starter), $69/month (Growth), $129/month (Professional) and $299/month (Business). Every plan includes unlimited building in Claude and ChatGPT, unlimited projects and custom domains; the included Capacity agent credits range from 100 to 1,000 per month and never expire. Subscriptions can be cancelled at any time.

- **Natural-language app generation:** Type a short description of your idea and Capacity asks a few questions, then builds the pages, data and logins in minutes with a live preview.
- **Real functionality, not demos:** Generated apps can include member accounts, logins, saved data and payments, not just static mockups.
- **Build from Claude or ChatGPT:** Connect Capacity to Claude or ChatGPT and build from the chat; each message runs on your AI plan rather than Capacity credits.
- **Instant publishing and custom domains:** One click publishes the app to the internet, and you can attach a custom domain name in minutes.
- **Ready-made app starters:** Start from templates such as yoga class bookings, an online shop, pre-orders or client galleries and adapt them to your business.

**Strengths:** Turns plain-language ideas into a deployed app the same day; Builds real features such as logins, saved data and payments; No technical setup: no servers, code or configuration to manage; Unlimited building through your own Claude or ChatGPT subscription

[Profile (Markdown)](https://openaitools.app/tool/capacity.md)

## OpenAI Platform

While ChatGPT serves end users, openai.com and the OpenAI Developer Platform (developers.openai.com) provide the foundational API, SDKs, and enterprise infrastructure powering thousands of production AI applications worldwide. In late 2026, OpenAI's API catalog is anchored by the GPT-6 and GPT-6.1 model suite—all featuring a 1.05-million-token context window and up to 128K output tokens. The lineup spans GPT-6 Astra for frontier reasoning and mission-critical research, GPT-6.1 Sol for near-Astra intelligence at one-fifth the price, GPT-6.1 Terra for fast visual reasoning and computer use, and GPT-6 Luna for ultra-high-volume, low-latency tasks, alongside specialized models like `gpt-5.3-codex` and `gpt-6-astra-law`.

The OpenAI Platform has evolved well beyond basic chat completion endpoints. Through the unified `v1/responses` API, developers can orchestrate stateful multi-step agents equipped with built-in server-side tools—including live web search, vector file search, code interpreter sandboxes, and GUI computer use—without stitching together external orchestration frameworks. Every flagship model supports configurable reasoning effort (`none`, `low`, `medium`, `high`, `xhigh`, and `max`), strict JSON schema Structured Outputs, and multimodal image/audio inputs, while `gpt-live-1` powers per-second billed speech-to-speech voice agents.

OpenAI bills API usage on a transparent consumption model scaled across usage tiers (Build, Launch, and Grow, scaling up to 40M+ tokens per minute). In 2026, aggressive price cuts on the 6.x generation dropped entry-level intelligence on GPT-6 Luna to $0.10 per million input tokens and $0.50 per million output tokens, while GPT-6.1 Sol runs at $2/$10 and flagship GPT-6 Astra sits at $10/$50. Engineering teams can cut spend by 90% on repeated context using automatic Prompt Caching, save 50% on asynchronous workloads via the Batch API, and enforce regional data residency with a 10% compliance uplift.

**Pricing & Plans:** 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.

- **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.
- **90% Prompt Caching Discount & Batch API:** Cached input tokens bill at just 10% of standard input rates, while asynchronous 24-hour Batch API jobs cut both input and output token costs by 50%.

**Strengths:** 100-fold cost flexibility from GPT-6 Luna ($0.10/$0.50 per 1M tokens) up to frontier GPT-6 Astra ($10/$50 per 1M tokens); Unified 1.05M-token context window and 128K output limit across the entire flagship GPT-6 and GPT-6.1 family; 90% discount on cached input tokens and 50% Batch API discount dramatically reduce production inference bills; Industry-standard SDKs, Structured Outputs, and built-in Responses API tools minimize boilerplate agent code

**Limitations:** Long-context requests exceeding the standard window threshold trigger roughly 2x higher per-token billing rates; Flagship GPT-6 Astra ($10 input / $50 output per 1M tokens) is significantly more expensive than Claude Opus 5.5 ($4/$20) and Grok 4.7 ($2/$6); Regional data residency endpoints incur a 10% price uplift on models released after March 2026

[Profile (Markdown)](https://openaitools.app/tool/openai.md)

## Frequently Asked Questions

### How do Capacity and OpenAI Platform compare in monthly traffic?

Capacity has 24,300 monthly visits, while OpenAI Platform has 234,678,639. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Capacity has a month-over-month growth rate of -22.9%; OpenAI Platform has -9.6%.

### How does pricing compare?

Capacity: Free Trial. Capacity is paid, with plans starting at $25/month (Starter), $69/month (Growth), $129/month (Professional) and $299/month (Business). Every plan includes unlimited building in Claude and ChatGPT, unlimited projects and custom domains; the included Capacity agent credits range from 100 to 1,000 per month and never expire. Subscriptions can be cancelled at any time. 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.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Google AI Studio](https://openaitools.app/tool/google-ai-studio) | 112,620,020 | +2% | Freemium | Provides direct API access to Google's Gemini models with generous free prototyping tiers, but lacks OpenAI's ecosystem breadth. | [.md](https://openaitools.app/tool/google-ai-studio.md) |
| 2 | [Qwen 4 (Alibaba Qwen4)](https://openaitools.app/tool/qwen-4) | 35,101,353 | -6.2% | Freemium | Alibaba Cloud's 4th-generation multimodal AI assistant and foundation model lineup (Qwen4-Max, Qwen4-Plus, Qwen4-Flash & open-weight Qwen4-27B) with 1M context. | [.md](https://openaitools.app/tool/qwen-4.md) |
| 3 | [Lovable](https://openaitools.app/tool/lovable) | 31,052,090 | +3.8% | Freemium | Describe your idea in chat and Lovable turns it into a working app or website | [.md](https://openaitools.app/tool/lovable.md) |
| 4 | [OpenRouter](https://openaitools.app/tool/openrouter-ai) | 19,941,437 | -6.2% | Paid | Unifies hundreds of third-party models under a single API key, offering greater model choice than OpenAI's curated catalog. | [.md](https://openaitools.app/tool/openrouter-ai.md) |
| 5 | [Base44](https://openaitools.app/tool/base44) | 14,039,232 | +0.5% | Freemium, Paid, Contact for Pricing | Build working apps, websites, and AI agents by describing them | [.md](https://openaitools.app/tool/base44.md) |
| 6 | [Replit](https://openaitools.app/tool/replit) | 10,016,437 | -7.7% | Freemium, Paid | Describe your idea and Replit builds a working app in minutes | [.md](https://openaitools.app/tool/replit.md) |
| 7 | [Emergent](https://openaitools.app/tool/emergent) | 5,788,850 | +5% | Freemium | Describe an app in chat and ship it | [.md](https://openaitools.app/tool/emergent.md) |
| 8 | [BigModel](https://openaitools.app/tool/bigmodel) | 5,700,686 | -17% | Freemium | Provides developer APIs for Zhipu AI's proprietary GLM models, serving as an alternative enterprise foundation model stack. | [.md](https://openaitools.app/tool/bigmodel.md) |
| 9 | [fal.ai](https://openaitools.app/tool/fal-ai) | 3,093,684 | -3.7% | Paid, pay-as-you-go usage-based pricing | Optimized for lightning-fast serverless execution of generative media and image models, rather than general text LLMs. | [.md](https://openaitools.app/tool/fal-ai.md) |
| 10 | [Together AI](https://openaitools.app/tool/together-ai) | 1,645,930 | +64.9% | Freemium, Paid | Specializes in high-performance serverless inference and dedicated GPU clusters for open-source models, bypassing closed commercial restrictions. | [.md](https://openaitools.app/tool/together-ai.md) |

---
Source: https://openaitools.app/compare/capacity-vs-openai

More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)