# ModelFusion vs PromptBase ModelFusion records 119 monthly visits with -88.2% month-over-month growth and Freemium pricing. PromptBase records 538,129 monthly visits with -1.8% growth and Paid pricing. | Metric | [ModelFusion](https://openaitools.app/tool/modelfusion) | [PromptBase](https://openaitools.app/tool/promptbase) | | :--- | :--- | :--- | | Website URL | https://modelfusion.io | https://promptbase.com | | Categories | AI Models, Large Language Models (LLMs), AI Chatbot, AI Image Generator | AI Prompt Generator, Prompt Engineering, AI App Builder, AI Image Generator | | Pricing Model | Freemium | Paid | | Monthly Visits | 119 | 538,129 | | MoM Growth Rate | -88.2% | -1.8% | | Primary Market | Global | United States | | Direct Visits | 51 | 256,487 | | Review Score | 4.2 | 3.7 | | Saved Count | 1 | 8 | | Supported Platforms | Website | Website | ## ModelFusion ModelFusion is a toolkit aimed at people who work with many large language models at once and want to make better cost and capability decisions. Its core is a set of free, browser-based utilities: an LLM cost calculator that estimates API spend across providers, a prompt tokenizer for counting tokens and trimming prompt length, a model selector quiz, a benchmark comparator using metrics like MMLU and HumanEval, a local LLM runner guide for Ollama and LM Studio, an open-source model directory and a glossary of AI terms. Beyond the calculators, ModelFusion also markets a product layer: MultiChat for comparing responses from multiple models side by side, document projects for chatting with uploaded PDFs and Word files, a unified API that presents one interface across providers, and usage analytics for tracking cost and performance. The site positions these as suitable for research, business, development and education audiences. Much of the toolkit is completely free and needs no registration, with the latest model pricing and benchmark data refreshed regularly. Because the underlying costs it reports come from third-party providers, users should still confirm current rates with OpenAI, Anthropic, Google or whichever vendor they rely on, as provider pricing changes often. **Pricing & Plans:** ModelFusion's calculators, prompt library and comparison tools are advertised as 100% free with no registration required. The platform also lists paid tiers (a Free Trial and Paid options) for its API and enterprise-style usage, so teams needing the unified API or dedicated support should check current plans on the site. - **LLM cost calculator:** Estimate API costs for GPT-4, Claude, Gemini and 25+ models and compare pricing across providers before you spend. - **Prompt library and tokenizer:** Access a large library of ready-made prompts and count tokens for any model to reduce cost and improve efficiency. - **Model selector and benchmark comparator:** Find the best model for a use case and compare MMLU, HumanEval and other performance metrics interactively. - **MultiChat and document projects:** Chat with several AI models at once for side-by-side comparison, and upload PDFs or Word files to query them with AI. - **Unified API and observability:** Use a single consistent interface across providers, with analytics for tracking usage, cost and performance. **Strengths:** Large collection of genuinely free utilities with no sign-up needed.; Useful for comparing pricing and benchmarks across many models in one place.; Covers practical extras like token counting and local model setup guides.; Includes a MultiChat view for comparing model answers directly. **Limitations:** Some tools are informational and model data can lag behind very fast-moving provider updates.; Cost figures are estimates based on third-party pricing and should be verified with each provider. [Profile (Markdown)](https://openaitools.app/tool/modelfusion.md) ## PromptBase PromptBase occupies the 'prompt layer' of the AI stack. As generative models became widely available, the hard part shifted from access to knowing what to type, and PromptBase turned that gap into a marketplace. Buyers get tested wording that reliably produces a particular result; sellers get paid for prompt engineering work they would otherwise give away. The catalogue is broad rather than deep in any single niche. There are categories for art styles, portraits, product shots, logos, icons, apparel designs, marketing copy and even prompts intended to help build small apps or landing pages. Each listing is tied to a specific model family, which matters because a prompt tuned for one image model often behaves differently in another. As a marketplace, PromptBase's value depends on its community. Sellers are incentivised by revenue share, which keeps fresh prompts coming, while buyers rely on sample images and seller reputation to judge quality before purchasing. The model is paid rather than free, and the site runs behind standard bot protection. **Pricing & Plans:** Paid marketplace. Most prompts are sold individually at low per-item prices set by their creators, with subscription options available for buyers who want ongoing access or credits. Pricing is not disclosed on the public page and may vary by listing. - **Curated prompt catalogue:** Thousands of ready-to-use prompts organised by model and by output type, from illustration styles to marketing copy. - **Model-specific sections:** Listings are grouped by the model they were built for, so you can filter to the tool you actually use. - **Sample output previews:** Each prompt is shown with example outputs, making it easy to judge the style before spending anything. - **Creator seller programme:** Anyone can upload prompts for sale and earn revenue share on every copy sold. - **Pay-per-prompt or subscribe:** Low per-prompt pricing plus buyer subscription options cover both occasional and high-volume users. **Strengths:** Saves time you would otherwise spend on trial-and-error prompt writing.; Sample images make quality easier to judge before buying.; Organised by model, so findings map to the tools you already use.; Creators can monetise prompt work directly. **Limitations:** There is no free tier for buying prompts - you pay per prompt or subscribe.; Quality and usefulness vary between sellers, so results depend on the individual listing.; A prompt that works well in one model is not guaranteed to behave identically elsewhere.; Popular prompts are widely sold, so exclusivity is limited. [Profile (Markdown)](https://openaitools.app/tool/promptbase.md) ## Frequently Asked Questions ### How do ModelFusion and PromptBase compare in monthly traffic? ModelFusion has 119 monthly visits, while PromptBase has 538,129. Traffic estimates describe audience size, not product quality. ### How do their growth rates compare? ModelFusion has a month-over-month growth rate of -88.2%; PromptBase has -1.8%. ### How does pricing compare? ModelFusion: Freemium. ModelFusion's calculators, prompt library and comparison tools are advertised as 100% free with no registration required. The platform also lists paid tiers (a Free Trial and Paid options) for its API and enterprise-style usage, so teams needing the unified API or dedicated support should check current plans on the site. PromptBase: Paid. Paid marketplace. Most prompts are sold individually at low per-item prices set by their creators, with subscription options available for buyers who want ongoing access or credits. Pricing is not disclosed on the public page and may vary by listing. ## Alternatives | # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 1 | [Code Arena](https://openaitools.app/tool/code-arena) | 35,827,928 | +19.4% | Free | Battle-test AI coding models side by side | [.md](https://openaitools.app/tool/code-arena.md) | | 2 | [FlowGPT](https://openaitools.app/tool/flowgpt) | 1,761,490 | +13.3% | Freemium | Largely free community-driven prompt sharing and instant chatting, rather than a transactional marketplace. | [.md](https://openaitools.app/tool/flowgpt.md) | | 3 | [PromptHero](https://openaitools.app/tool/prompthero) | 1,044,654 | -2.4% | Freemium | Massive free prompt search engine and discovery platform, but lacks PromptBase's direct creator monetization marketplace. | [.md](https://openaitools.app/tool/prompthero.md) | | 4 | [Surge AI](https://openaitools.app/tool/surgehq-ai) | 245,142 | +6.6% | Contact for Pricing | Expert human data and evaluation for training frontier AI | [.md](https://openaitools.app/tool/surgehq-ai.md) | | 5 | [Models.dev](https://openaitools.app/tool/models-dev) | 200,451 | -3.9% | Free | Open-source database of AI models, prices and capabilities | [.md](https://openaitools.app/tool/models-dev.md) | | 6 | [Midlibrary](https://openaitools.app/tool/midlibrary-io) | 118,712 | -13.4% | Freemium, Free | Deeply specialized catalog for Midjourney styles and reference codes, but lacks multi-model text and video coverage. | [.md](https://openaitools.app/tool/midlibrary-io.md) | | 7 | [ChatGPT Shortcut](https://openaitools.app/tool/chatgpt-shortcut) | 84,028 | -9.9% | Free | Free, community-curated AI prompt library for ChatGPT, Claude and Gemini | [.md](https://openaitools.app/tool/chatgpt-shortcut.md) | | 8 | [AI for Work](https://openaitools.app/tool/ai-for-work) | 72,615 | -14.9% | Free | A free prompt library and AI workflow hub for professionals | [.md](https://openaitools.app/tool/ai-for-work.md) | | 9 | [Snack Prompt](https://openaitools.app/tool/snack-prompt) | 35,155 | -11.4% | Freemium | Community marketplace for AI prompts, agents, and automations | [.md](https://openaitools.app/tool/snack-prompt.md) | | 10 | [The Prompt Index](https://openaitools.app/tool/the-prompt-index) | 31,404 | -16.9% | Free | A searchable AI prompt database with 25 AI tools built in | [.md](https://openaitools.app/tool/the-prompt-index.md) | --- Source: https://openaitools.app/compare/modelfusion-vs-promptbase More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)