# AI tools for “LLM API”

2,000 matching tools; showing 24, ranked by relevance.

Related categories: [ai-models](https://openaitools.app/category/ai-models.md), [ai-api](https://openaitools.app/category/ai-api.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 | [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, ai-api, large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/openai.md) |
| 2 | [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: ai-api, large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/deepseek.md) |
| 3 | [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, ai-api, large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/openrouter-ai.md) |
| 4 | [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, ai-api, large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/google-ai-studio.md) |
| 5 | [LiteLLM](https://openaitools.app/tool/litellm) | 576,967 | +7.9% | Freemium, Contact for Pricing | One open-source AI gateway for 100+ LLM providers | category: ai-api, large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/litellm.md) |
| 6 | [Groq](https://openaitools.app/tool/groq) | 3,987,936 | +10% | Paid | Ultra-fast AI inference on the LPU and LPX platform | category: ai-api, large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/groq.md) |
| 7 | [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, ai-api, large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/bigmodel.md) |
| 8 | [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, ai-api, large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/llm-gateway.md) |
| 9 | [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, ai-api, large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/qwen-4.md) |
| 10 | [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; keywords 100%; semantic match | [.md](https://openaitools.app/tool/gemma-open-models-by-google.md) |
| 11 | [OrcaRouter](https://openaitools.app/tool/orcarouter) | 975,300 | -5.2% | Freemium | One OpenAI-compatible gateway for adaptive LLM routing, guardrails, and spend control | category: ai-api, large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/orcarouter.md) |
| 12 | [Claude](https://openaitools.app/tool/claude-2) | 1,253,439,413 | +23.8% | Freemium | Anthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing. | category: ai-api; keywords 100% | [.md](https://openaitools.app/tool/claude-2.md) |
| 13 | [ZenMux](https://openaitools.app/tool/zenmux) | 444,394 | +16.7% | Freemium, Paid | One unified API for 100+ AI models, with insurance when output disappoints | category: ai-api, large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/zenmux.md) |
| 14 | [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; keywords 100%; semantic match | [.md](https://openaitools.app/tool/abliteration-ai.md) |
| 15 | [Exa](https://openaitools.app/tool/exa-ai) | 1,062,574 | +16.8% | Freemium, Contact for Pricing | Web search API and crawler built for AI agents | category: ai-api, large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/exa-ai.md) |
| 16 | [CometAPI](https://openaitools.app/tool/cometapi) | 602,966 | +49.7% | Pay-as-you-go (credits) | One OpenAI-compatible API key for 500+ AI models | category: ai-api; keywords 100%; semantic match | [.md](https://openaitools.app/tool/cometapi.md) |
| 17 | [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 | category: ai-api; keywords 100%; semantic match | [.md](https://openaitools.app/tool/evolink-ai-model-api.md) |
| 18 | [Agnes AI](https://openaitools.app/tool/agnes-ai) | 902,184 | -25.8% | Freemium | One free API for text, image, and video AI models | category: ai-api, large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/agnes-ai.md) |
| 19 | [OfoxAI](https://openaitools.app/tool/ofoxai) | 239,718 | +12.7% | — | One API key, 100+ LLMs, official pricing with no platform markup | category: ai-api, large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/ofoxai.md) |
| 20 | [AI/ML API](https://openaitools.app/tool/ai-ml-api) | 232,946 | -20.1% | Pay-as-you-go credits (free to start); enterprise custom pricing on request | One universal API for 500+ AI models and 1,000+ agentic tools | category: ai-models, ai-api; keywords 100%; semantic match | [.md](https://openaitools.app/tool/ai-ml-api.md) |
| 21 | [APIMaster](https://openaitools.app/tool/apimaster) | 210,182 | +46.3% | Paid | One OpenAI-compatible key for discounted GPT, Claude and Gemini access | category: ai-api, large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/apimaster.md) |
| 22 | [AiHubMix](https://openaitools.app/tool/aihubmix) | 238,455 | -16.1% | Contact for Pricing | One API key for hundreds of AI models | category: ai-models, ai-api, large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/aihubmix.md) |
| 23 | [DeepInfra](https://openaitools.app/tool/deep-infra) | 457,810 | -8.9% | Paid | Low-cost serverless inference APIs for 200+ open models | category: ai-models, ai-api, large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/deep-infra.md) |
| 24 | [Atlas Cloud](https://openaitools.app/tool/atlas-cloud) | 777,031 | -16.4% | Paid | One OpenAI-compatible API for 500+ image, video, audio, and LLM models | category: ai-models, ai-api; keywords 100%; semantic match | [.md](https://openaitools.app/tool/atlas-cloud.md) |

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

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