# CometAPI vs Fillout

CometAPI records 602,966 monthly visits with +49.7% month-over-month growth and Pay-as-you-go (credits) pricing. Fillout records 3,923,917 monthly visits with -9.7% growth and Freemium pricing.

| Metric | [CometAPI](https://openaitools.app/tool/cometapi) | [Fillout](https://openaitools.app/tool/fillout-com) |
| :--- | :--- | :--- |
| Website URL | https://www.cometapi.com | https://www.fillout.com |
| Categories | AI Developer Tools, AI API | AI Forms, AI Quiz Generator, AI Signature Generator, AI PDF |
| Pricing Model | Pay-as-you-go (credits) | Freemium |
| Monthly Visits | 602,966 | 3,923,917 |
| MoM Growth Rate | +49.7% | -9.7% |
| Primary Market | India | United States |
| Direct Visits | 89,151 | 2,306,833 |
| Review Score | 4 | 4.4 |
| Saved Count | 2 | 12 |
| Supported Platforms | Website | Website |

## CometAPI

CometAPI is an aggregation layer for large language and multimodal model providers. Instead of maintaining separate accounts, keys and billing relationships with OpenAI, Anthropic, Google and a growing set of image, audio and video vendors, teams sign up once, get a single API key, and call any of 500+ models through an OpenAI-compatible base URL. Existing SDK code usually works after changing the base URL and model name, which keeps migration effort low.

The commercial pitch is straightforward: pay-as-you-go credits, line-item pricing for every model, and rates set below official vendor pricing, with the platform advertising ongoing savings of roughly 20 to 40 percent. There is no monthly subscription or minimum spend, unused credits carry forward, and the model catalog is searchable with side-by-side pricing and capability comparisons. Because model names are the only thing that changes when you switch vendors, teams gain portability if a provider raises prices or has an outage.

Operationally, CometAPI positions itself as production infrastructure rather than a demo playground. It advertises 99.9% service availability and average latency under 400 ms, exposes an API status page and benchmarks, and offers a dashboard for spend, latency and call volume with budget alerts. Enterprise-oriented features include centralized accounts for multiple teams, per-team budgets, encrypted transit and a stated policy that customer data is not used to train models. Integrations with coding agents, low-code automation platforms and app builders let teams plug the gateway into existing workflows rather than rebuilding them.

**Pricing & Plans:** Pay-as-you-go API credits with no monthly subscription, minimum spend or credit card required at signup. CometAPI advertises per-model rates below official vendor pricing, typically 20-40% cheaper, and test credits are included when you create an account.

- **One key for 500+ models:** Replace separate OpenAI, Anthropic and Google credentials with a single key and switch models by changing one line of code.
- **OpenAI-compatible endpoint:** Route text, reasoning, coding, image, audio and video workloads through one OpenAI-compatible base URL without rewriting your app.
- **Transparent pricing and savings:** Line-item pricing per model with discounts below official vendor rates, pay-as-you-go with no monthly subscription or minimum spend.
- **Usage analytics and cost control:** A real-time dashboard tracks spend, latency and call volume so you can set budget alerts and compare models side by side.
- **Prebuilt tool integrations:** Works with Claude Code, Codex, Cline, Dify, n8n, Zapier, Coze and other agent, automation and app-building tools.

**Strengths:** One credential and one endpoint for 500+ models from many providers; OpenAI-compatible format means existing code keeps working with minimal changes; Pay-as-you-go credits with no monthly fee and unused balance carried forward; Dashboard for spend, latency and call volume with budget alerts

**Limitations:** You depend on a third-party intermediary for uptime and latency on every routed model; Some catalog entries are marked coming soon, so not every listed model is instantly available; Pricing and availability can shift as upstream vendors change their own rates

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

## Fillout

Fillout is a no-code platform for building forms, surveys, quizzes, and payment or scheduling pages. You can start from a description and let the built-in Zite AI assemble a ready-to-publish form in your brand, or drag and drop fields manually. Every submission is stored in a structured database you can filter, analyze, and connect to other tools.

Beyond basic data collection, Fillout adds intelligent routing, login-based forms that let respondents edit their own answers, digital signatures, and native integrations with 50+ apps. Branding is fully controllable, including custom domains, white-labeling, and embeds as popups, sliders, or full-screen pages.

A large number of organizations use Fillout for secure data intake, and the service advertises SOC II Type 2 compliance plus AES-256 encryption. A free tier covers casual use, while paid plans unlock advanced logic, higher limits, and team features.

**Pricing & Plans:** Freemium. A free plan covers basic forms and submissions, with paid tiers for advanced logic, higher limits, file uploads, payments, and team collaboration.

- **AI form builder (Zite):** Describe the form you need in plain language and Zite generates a branded form with logic, file uploads, and payments.
- **Logic and workflows:** Add conditional logic, intelligent routing, and multi-step workflows to automate what happens after each response.
- **Editable and secure submissions:** Respondents can log in to update their answers, and forms can be restricted to internal users only.
- **Branding and embeds:** Use custom themes, fonts, logos, custom CSS, your own domain, and embed forms as popups, sliders, or full-screen pages.
- **50+ integrations and analytics:** Send responses to spreadsheets, CRMs, and other tools, then review and collaborate on results with flexible views.

**Strengths:** AI-assisted building makes first drafts fast; Deep logic, workflows, and 50+ integrations; Strong branding controls including white-label and custom domains; SOC II Type 2 compliance and AES-256 encryption

**Limitations:** Advanced features require paid plans; Feature depth can be overwhelming for simple one-off forms; Popular templates see heavy competition for the same look

[Profile (Markdown)](https://openaitools.app/tool/fillout-com.md)

## Frequently Asked Questions

### How do CometAPI and Fillout compare in monthly traffic?

CometAPI has 602,966 monthly visits, while Fillout has 3,923,917. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

CometAPI has a month-over-month growth rate of +49.7%; Fillout has -9.7%.

### How does pricing compare?

CometAPI: Pay-as-you-go (credits). Pay-as-you-go API credits with no monthly subscription, minimum spend or credit card required at signup. CometAPI advertises per-model rates below official vendor pricing, typically 20-40% cheaper, and test credits are included when you create an account. Fillout: Freemium. Freemium. A free plan covers basic forms and submissions, with paid tiers for advanced logic, higher limits, file uploads, payments, and team collaboration.

## 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 | Google's rapid prototyping IDE and developer API workbench for building multimodal applications with Gemini models. | [.md](https://openaitools.app/tool/google-ai-studio.md) |
| 2 | [OpenRouter](https://openaitools.app/tool/openrouter-ai) | 19,941,437 | -6.2% | Paid | Industry-leading model router with transparent pricing and broad provider support, but lacks Comet's specific bundled discounts. | [.md](https://openaitools.app/tool/openrouter-ai.md) |
| 3 | [fal.ai](https://openaitools.app/tool/fal-ai) | 3,093,684 | -3.7% | Paid, pay-as-you-go usage-based pricing | Excels at serverless generation of media models like images and video, but is less focused on general LLM routing. | [.md](https://openaitools.app/tool/fal-ai.md) |
| 4 | [Together AI](https://openaitools.app/tool/together-ai) | 1,645,930 | +64.9% | Freemium, Paid | Specializes in high-performance serverless inference for open-source models, but offers fewer proprietary commercial model options. | [.md](https://openaitools.app/tool/together-ai.md) |
| 5 | [forms.app](https://openaitools.app/tool/forms-app) | 987,157 | -11.2% | Freemium, Paid | Broader template library and multi-channel sharing features, but less flexible multi-page layout customization than Fillout. | [.md](https://openaitools.app/tool/forms-app.md) |
| 6 | [Atlas Cloud](https://openaitools.app/tool/atlas-cloud) | 777,031 | -16.4% | Paid | Offers unified access to multimodal language and media models, but focuses more heavily on generation infrastructure. | [.md](https://openaitools.app/tool/atlas-cloud.md) |
| 7 | [LiteLLM](https://openaitools.app/tool/litellm) | 576,967 | +7.9% | Freemium, Contact for Pricing | Open-source proxy and SDK that standardizes multi-provider LLM calls, but requires self-hosting or manual infrastructure setup. | [.md](https://openaitools.app/tool/litellm.md) |
| 8 | [EvoLink AI Model API](https://openaitools.app/tool/evolink-ai-model-api) | 312,573 | -27% | Free Trial, Paid, Contact for Pricing | One API for LLM, image, video, and audio models in production | [.md](https://openaitools.app/tool/evolink-ai-model-api.md) |
| 9 | [BlockSurvey](https://openaitools.app/tool/block-survey) | 302,480 | -14.9% | Freemium, Paid | Superior privacy-first encryption and secure data handling, but more restrictive workflow automation and styling capabilities. | [.md](https://openaitools.app/tool/block-survey.md) |
| 10 | [SiliconFlow](https://openaitools.app/tool/siliconflow) | 276,303 | -10.5% | Pay-as-you-go | Provides optimized inference for open-weight models behind a unified API, though with different regional pricing structures. | [.md](https://openaitools.app/tool/siliconflow.md) |

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Source: https://openaitools.app/compare/cometapi-vs-fillout-com

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