# AI tools for “API Testing”

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

Related categories: [ai-testing](https://openaitools.app/category/ai-testing.md), [ai-api](https://openaitools.app/category/ai-api.md)

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Why it matched | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 97 | [Drizz](https://openaitools.app/tool/drizz) | 40,750 | -19.1% | Free Trial, Paid, Contact for Pricing | Describe it in plain English, Drizz tests it on real devices | category: ai-testing; keywords 60%; semantic match | [.md](https://openaitools.app/tool/drizz.md) |
| 98 | [Coarena by Coasty](https://openaitools.app/tool/coarena-by-coasty) | 59,004 | -33.5% | Free | Benchmark computer- and phone-use AI agents with blind head-to-head battles | category: ai-testing; keywords 60%; semantic match | [.md](https://openaitools.app/tool/coarena-by-coasty.md) |
| 99 | [Prep Edu](https://openaitools.app/tool/prep-edu) | 1,414,975 | -19.8% | Paid | Study smarter for IELTS, TOEIC and HSK with AI speaking and writing rooms | category: ai-testing; keywords 60% | [.md](https://openaitools.app/tool/prep-edu.md) |
| 100 | [Hamming AI](https://openaitools.app/tool/hamming-ai-yc-s24) | 17,813 | -31.7% | Contact for Pricing | The security layer for voice and chat agents: test, red-team, and monitor every call | category: ai-testing; keywords 60%; semantic match | [.md](https://openaitools.app/tool/hamming-ai-yc-s24.md) |
| 101 | [BytePlus](https://openaitools.app/tool/byteplus) | 3,036,127 | -30% | Freemium, Paid | AI-native cloud for building and scaling enterprise AI | category: ai-api | [.md](https://openaitools.app/tool/byteplus.md) |
| 102 | [Anakin](https://openaitools.app/tool/anakin) | 76,886 | -31.6% | Freemium | One scraping API that turns any website into agent-ready JSON | category: ai-api; semantic match | [.md](https://openaitools.app/tool/anakin.md) |
| 103 | [HeyGen](https://openaitools.app/tool/heygen) | 7,000,070 | +9.4% | Freemium | Turn scripts into studio-quality AI avatar videos in minutes | category: ai-api | [.md](https://openaitools.app/tool/heygen.md) |
| 104 | [ModelHunter.AI](https://openaitools.app/tool/modelhunter-ai) | 4,041 | -51% | Free Trial, Paid | One API key, 21+ generation models, no subscriptions | category: ai-api; keywords 100%; semantic match | [.md](https://openaitools.app/tool/modelhunter-ai.md) |
| 105 | [MiniMax Image-01](https://openaitools.app/tool/minimax-image-01) | 5,253,734 | -13.2% | Contact for Pricing | MiniMax's open-weight model for turning prompts into images | category: ai-api | [.md](https://openaitools.app/tool/minimax-image-01.md) |
| 106 | [PRST.ai](https://openaitools.app/tool/prst-ai) | 1,169 | -42.6% | Paid, Contact for Pricing, Free | Self-hosted, no-code prompt management for any AI model | category: ai-api; keywords 100%; semantic match | [.md](https://openaitools.app/tool/prst-ai.md) |
| 107 | [Dropbox Sign (HelloSign)](https://openaitools.app/tool/hellosign) | 4,339,818 | -2.2% | Free Trial, Paid, Contact for Pricing | Electronic signatures and agreement workflows built into Dropbox | category: ai-api | [.md](https://openaitools.app/tool/hellosign.md) |
| 108 | [PoYo.AI](https://openaitools.app/tool/poyo-ai) | 126,258 | -16.2% | Free Trial, Paid | One API key for 500+ image, video, music, chat, and 3D models | category: ai-api; semantic match | [.md](https://openaitools.app/tool/poyo-ai.md) |
| 109 | [Thor Data](https://openaitools.app/tool/thor-data) | 181,966 | -3.5% | Free Trial, Paid | Proxies and web data APIs for scraping and AI pipelines | category: ai-api; semantic match | [.md](https://openaitools.app/tool/thor-data.md) |
| 110 | [DataCamp](https://openaitools.app/tool/datacamp-com) | 6,237,230 | -0.4% | Freemium | Interactive courses for data science, AI and analytics skills | category: ai-api | [.md](https://openaitools.app/tool/datacamp-com.md) |
| 111 | [LanguageTool](https://openaitools.app/tool/languagetool) | 5,707,795 | -4.2% | Freemium | AI grammar, spelling and style checker for 30+ languages | category: ai-api | [.md](https://openaitools.app/tool/languagetool.md) |
| 112 | [Confident AI](https://openaitools.app/tool/confident-ai) | 83,400 | -3.3% | Freemium, Paid, Contact for Pricing | Standardize LLM evaluation, observability, and red teaming across your whole org | category: ai-testing; keywords 100% | [.md](https://openaitools.app/tool/confident-ai.md) |
| 113 | [LinkupAPI](https://openaitools.app/tool/linkupapi) | 37,347 | +7.1% | Paid | One outreach API to reach prospects on LinkedIn, email, WhatsApp and iMessage | category: ai-api; semantic match | [.md](https://openaitools.app/tool/linkupapi.md) |
| 114 | [Gradium](https://openaitools.app/tool/gradium) | 126,416 | +128.7% | Freemium, Contact for Pricing | Real-time voice AI APIs with 50 ms to first audio | category: ai-api; keywords 100% | [.md](https://openaitools.app/tool/gradium.md) |
| 115 | [Apify](https://openaitools.app/tool/apify) | 4,147,762 | +3.9% | Freemium, Contact for Pricing | Run thousands of ready-made web scrapers and AI agents from one cloud platform | category: ai-api | [.md](https://openaitools.app/tool/apify.md) |
| 116 | [Brevo](https://openaitools.app/tool/brevo) | 6,527,382 | +5.8% | Freemium | All-in-one customer platform for email, SMS, CRM, and automation | keywords 100% | [.md](https://openaitools.app/tool/brevo.md) |
| 117 | [Gemini 4 Carbon (Gemini Carbon 4)](https://openaitools.app/tool/gemini-4-carbon) | 4,339,429 | +12.7% | Freemium | Google DeepMind's #1 frontier AI model (Gemini Carbon 4) for long-horizon agentic coding, cybersecurity defense, and 1M-token multimodal reasoning. | category: ai-api | [.md](https://openaitools.app/tool/gemini-4-carbon.md) |
| 118 | [ApiPass](https://openaitools.app/tool/apipass-api-marketplace) | 64,237 | -8.3% | Pay-per-use / Usage-based credits | One API key for 180+ leading AI models at a fraction of official pricing | category: ai-api; semantic match | [.md](https://openaitools.app/tool/apipass-api-marketplace.md) |
| 119 | [Branded](https://openaitools.app/tool/gobranded-com) | 3,704,728 | +6.6% | Contact for Pricing | Targeted research audiences with AI-verified data quality | category: ai-api | [.md](https://openaitools.app/tool/gobranded-com.md) |
| 120 | [useapi.net](https://openaitools.app/tool/third-party-api-for-popular-ai-services) | 27,680 | -12.8% | Paid | One subscription, rest APIs for Google Flow, Kling, Runway, MiniMax, Mureka and more | category: ai-api; semantic match | [.md](https://openaitools.app/tool/third-party-api-for-popular-ai-services.md) |

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

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