# AI tools for “LLM customization”

1,073 matching tools; showing 24, ranked by relevance.

Related categories: [ai-models](https://openaitools.app/category/ai-models.md), [large-language-models-llms](https://openaitools.app/category/large-language-models-llms.md)

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Why it matched | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Ollama](https://openaitools.app/tool/ollama) | 9,421,973 | +4.3% | Free, Freemium, Paid | Run and build with open AI models locally or in the cloud | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/ollama.md) |
| 2 | [Gemma Open Models by Google](https://openaitools.app/tool/gemma-open-models-by-google) | 4,900,914 | -13.5% | Freemium, Paid | Google's family of lightweight, open-weight AI models | category: ai-models, large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/gemma-open-models-by-google.md) |
| 3 | [Google Gemini](https://openaitools.app/tool/gemini-gemini-advanced) | 2,637,398,242 | -0.1% | Freemium | Google's multimodal AI assistant powered by Gemini 4 Carbon (Gemini Carbon 4), Gemini 4 Argon, and Gemini 3.8 Flash with a 1M-token context window and Workspace integration. | category: ai-models, large-language-models-llms | [.md](https://openaitools.app/tool/gemini-gemini-advanced.md) |
| 4 | [DeepSeek](https://openaitools.app/tool/deepseek) | 372,761,591 | +4.3% | Freemium | High-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs. | category: large-language-models-llms | [.md](https://openaitools.app/tool/deepseek.md) |
| 5 | [OpenAI Platform](https://openaitools.app/tool/openai) | 234,678,639 | -9.6% | Paid | Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents. | category: ai-models, large-language-models-llms | [.md](https://openaitools.app/tool/openai.md) |
| 6 | [Poe](https://openaitools.app/tool/poe) | 5,894,702 | +9.1% | Freemium | One app to chat with GPT, Claude, Gemini and hundreds of other AI models | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/poe.md) |
| 7 | [Vellum](https://openaitools.app/tool/vellum) | 331,901 | -20.8% | Freemium, Paid | A private, memory-powered AI assistant you own and customize | keywords 100%; semantic match | [.md](https://openaitools.app/tool/vellum.md) |
| 8 | [AnythingLLM](https://openaitools.app/tool/anythingllm) | 512,269 | +12.9% | Freemium | Own your intelligence: a private AI assistant that runs entirely on your machine | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/anythingllm.md) |
| 9 | [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. | category: ai-models, large-language-models-llms | [.md](https://openaitools.app/tool/google-ai-studio.md) |
| 10 | [LiteLLM](https://openaitools.app/tool/litellm) | 576,967 | +7.9% | Freemium, Contact for Pricing | One open-source AI gateway for 100+ LLM providers | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/litellm.md) |
| 11 | [Prompt Cowboy](https://openaitools.app/tool/prompt-cowboy) | 1,130,450 | -22.4% | Freemium | Turn lazy prompts into great ones and get more out of any large language model | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/prompt-cowboy.md) |
| 12 | [Open WebUI](https://openaitools.app/tool/open-webui) | 804,534 | -2.8% | Freemium | Self-hosted AI workspace for local and cloud models | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/open-webui.md) |
| 13 | [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. | category: ai-models, large-language-models-llms | [.md](https://openaitools.app/tool/qwen-4.md) |
| 14 | [Praktika](https://openaitools.app/tool/chatgpt-english-praktika-app) | 673,116 | +8.5% | Freemium, Paid | Learn a new language by talking to lifelike AI tutors | keywords 80%; semantic match | [.md](https://openaitools.app/tool/chatgpt-english-praktika-app.md) |
| 15 | [Abliteration.ai](https://openaitools.app/tool/abliteration-ai) | 522,766 | +23.9% | Freemium, Paid, Contact for Pricing | Unrestricted, OpenAI-compatible LLM API governed by your own policies | category: ai-models, large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/abliteration-ai.md) |
| 16 | [LLM Gateway](https://openaitools.app/tool/llm-gateway) | 168,426 | -14.5% | Freemium, Contact for Pricing | One OpenAI-compatible API to route, monitor and control 250+ LLM models | category: ai-models, large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/llm-gateway.md) |
| 17 | [OpenRouter](https://openaitools.app/tool/openrouter-ai) | 19,941,437 | -6.2% | Paid | One API key for hundreds of AI models from every major provider | category: ai-models, large-language-models-llms | [.md](https://openaitools.app/tool/openrouter-ai.md) |
| 18 | [Learn Prompting](https://openaitools.app/tool/learn-prompting) | 159,807 | -8.6% | Freemium, Free Trial, Contact for Pricing | Free open course for prompt engineering and AI security | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/learn-prompting.md) |
| 19 | [SiteGPT](https://openaitools.app/tool/sitegpt) | 164,579 | -15% | Free Trial, Paid, Contact for Pricing | Custom AI support chatbots trained on your own website content | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/sitegpt.md) |
| 20 | [ApX Machine Learning](https://openaitools.app/tool/apx-machine-learning) | 252,389 | -6.5% | Freemium | VRAM, throughput and GPU cost calculators plus courses for open-weight LLM deployment | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/apx-machine-learning.md) |
| 21 | [Emma AI](https://openaitools.app/tool/emma-ai) | 1,940 | -68.5% | Freemium | Build a custom GPT-powered assistant that answers from your own business data. | category: large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/emma-ai.md) |
| 22 | [Use AI](https://openaitools.app/tool/use-ai) | 8,751,848 | -10.2% | Free Trial, Paid | One workspace for Claude, GPT, Gemini, Grok and more | category: ai-models, large-language-models-llms | [.md](https://openaitools.app/tool/use-ai.md) |
| 23 | [BigModel](https://openaitools.app/tool/bigmodel) | 5,700,686 | -17% | Freemium | Zhipu AI's open platform for GLM large models, multimodal APIs, and agent building | category: ai-models, large-language-models-llms | [.md](https://openaitools.app/tool/bigmodel.md) |
| 24 | [Portkey](https://openaitools.app/tool/portkey-ai) | 195,650 | -9.4% | Freemium, Paid, Contact for Pricing | AI gateway, observability and guardrails for production LLM apps | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/portkey-ai.md) |

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Source: https://openaitools.app/?q=LLM%20customization

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