# AI tools for “Human Annotation”

91 matching tools; showing 24, ranked by relevance.

Filters: `group=coding-development`

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Why it matched | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Appen](https://openaitools.app/tool/appen-com) | 665,840 | +0.2% | Contact for Pricing | Human-validated training data and evaluation services for frontier AI models | keywords 100%; semantic match | [.md](https://openaitools.app/tool/appen-com.md) |
| 2 | [Label Studio](https://openaitools.app/tool/label-studio) | 137,199 | -16.1% | Contact for Pricing, Free | Label any data. Evaluate any AI. | keywords 100%; semantic match | [.md](https://openaitools.app/tool/label-studio.md) |
| 3 | [Prolific](https://openaitools.app/tool/prolific-com) | 18,697,671 | -1.8% | Paid | High-quality human data for AI training, evaluation, and research | semantic match | [.md](https://openaitools.app/tool/prolific-com.md) |
| 4 | [clickworker](https://openaitools.app/tool/clickworker-com) | 1,861,149 | +0.5% | Contact for Pricing | Crowdsourcing data services for AI training and market data | keywords 62%; semantic match | [.md](https://openaitools.app/tool/clickworker-com.md) |
| 5 | [Labelbox](https://openaitools.app/tool/labelbox) | 762,803 | -22.8% | Contact for Pricing | The environments frontier AI trains on, and the agents that do the recurring work | keywords 100%; semantic match | [.md](https://openaitools.app/tool/labelbox.md) |
| 6 | [Isahit](https://openaitools.app/tool/isahit) | 13,136 | +80.2% | Contact for Pricing | Ethical human-in-the-loop data labeling and AI validation | keywords 100%; semantic match | [.md](https://openaitools.app/tool/isahit.md) |
| 7 | [People for AI](https://openaitools.app/tool/people-for-ai) | 992 | -12.7% | Contact for Pricing | Human-annotated training data for computer vision and NLP | keywords 100%; semantic match | [.md](https://openaitools.app/tool/people-for-ai.md) |
| 8 | [SuperAnnotate](https://openaitools.app/tool/super-annotate) | 386,034 | +37.4% | Free Trial, Contact for Pricing | AI data infrastructure for building production-grade models | keywords 62%; semantic match | [.md](https://openaitools.app/tool/super-annotate.md) |
| 9 | [Roboflow](https://openaitools.app/tool/roboflow) | 1,431,204 | +6.6% | Freemium, Contact for Pricing | Build, train, and deploy computer vision for the physical world | keywords 62%; semantic match | [.md](https://openaitools.app/tool/roboflow.md) |
| 10 | [Surge AI](https://openaitools.app/tool/surgehq-ai) | 245,142 | +6.6% | Contact for Pricing | Expert human data and evaluation for training frontier AI | semantic match | [.md](https://openaitools.app/tool/surgehq-ai.md) |
| 11 | [Outlier AI](https://openaitools.app/tool/outlier-ai) | 10,372,036 | +7.6% | Paid | Get paid to train the next generation of AI models | semantic match | [.md](https://openaitools.app/tool/outlier-ai.md) |
| 12 | [Encord](https://openaitools.app/tool/encord-com) | 244,204 | +9.4% | Contact for Pricing | The multimodal data layer for computer vision and physical AI teams | keywords 62%; semantic match | [.md](https://openaitools.app/tool/encord-com.md) |
| 13 | [Pangeanic](https://openaitools.app/tool/pangeanic-com) | 32,787 | -9.9% | Contact for Pricing | Multilingual AI data, model alignment, and sovereign AI systems for enterprises and labs | keywords 100%; semantic match | [.md](https://openaitools.app/tool/pangeanic-com.md) |
| 14 | [BasicAI Cloud](https://openaitools.app/tool/basicai-cloud) | 21,670 | -13.1% | Freemium, Enterprise Quote | AI data annotation platform and managed labeling services for AI training data | keywords 62%; semantic match | [.md](https://openaitools.app/tool/basicai-cloud.md) |
| 15 | [Prolific](https://openaitools.app/tool/prolific-co) | 77,755 | -24% | Paid | Real human data for AI training, evals, and research — in minutes | semantic match | [.md](https://openaitools.app/tool/prolific-co.md) |
| 16 | [RentAHuman.ai](https://openaitools.app/tool/rentahuman-ai) | 256,619 | -18.2% | Paid | Hire real people for tasks AI agents can't do in the physical world | semantic match | [.md](https://openaitools.app/tool/rentahuman-ai.md) |
| 17 | [LightPDF](https://openaitools.app/tool/lightpdf-com) | 1,742,568 | -15.3% | Freemium | Free AI-powered PDF editor, converter and reader for every device | keywords 62% | [.md](https://openaitools.app/tool/lightpdf-com.md) |
| 18 | [Detecting-AI.com](https://openaitools.app/tool/detecting-ai-com) | 505,146 | +493% | Freemium, Paid | AI detector that highlights evidence, not just a score | semantic match | [.md](https://openaitools.app/tool/detecting-ai-com.md) |
| 19 | [T-Rex Label](https://openaitools.app/tool/t-rex-label) | 9,900 | +37.6% | Free | Browser-based AI data labeling that turns one box into a whole annotated dataset | keywords 62%; semantic match | [.md](https://openaitools.app/tool/t-rex-label.md) |
| 20 | [AI Text Humanizer](https://openaitools.app/tool/ai-text-humanizer-com) | 121,013 | -0.2% | Freemium | Rewrite AI-generated text into natural, human-sounding prose | semantic match | [.md](https://openaitools.app/tool/ai-text-humanizer-com.md) |
| 21 | [Ultralytics](https://openaitools.app/tool/ultralytics) | 793,423 | +8.7% | Freemium | Real-time vision AI models and a full platform to train, annotate, and deploy them | keywords 62% | [.md](https://openaitools.app/tool/ultralytics.md) |
| 22 | [Scale](https://openaitools.app/tool/scale) | 616,915 | +12.5% | Contact for Pricing | The data, evaluations and systems behind AI that has to be right. | semantic match | [.md](https://openaitools.app/tool/scale.md) |
| 23 | [HumanLayer](https://openaitools.app/tool/humanlayer) | 63,865 | -33.4% | Freemium | A multiplayer control plane for AI coding agents | semantic match | [.md](https://openaitools.app/tool/humanlayer.md) |
| 24 | [AI or Not](https://openaitools.app/tool/ai-or-not) | 375,863 | +12.3% | Freemium, Contact for Pricing | Multi-modal AI detection API that flags synthetic images, text, audio, video and deepfakes | semantic match | [.md](https://openaitools.app/tool/ai-or-not.md) |

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