Appen records 665,840 monthly visits with +0.2% month-over-month growth and Contact for Pricing pricing. Milk Infrastructure records 0 monthly visits with 0% growth and Paid pricing.
Human-validated training data and evaluation services for frontier AI models
Turn the model traffic you already generate into summaries, experiments, and training data
| Dimension / Metric | | |
|---|---|---|
| Official Domain | appen.com | milkinfrastructure.com |
| Pricing Model | Contact for Pricing | Paid |
| Monthly Visits | 665.84K (665,840) | 0 (0) |
| MoM Traffic Delta | +1.1K (+0.2%) | 0 (0%) |
| Primary Market & Share | 🇺🇸 United States (22%) | 🌐 Global (—) |
| Direct Visits / mo | 238.31K | 0 |
| User Rating | 4.4 | 4.3 |
| Supported Platforms | Website | Website |
Human-validated training data and evaluation services for frontier AI models
Chain-of-thought reasoning traces, SME-level RLHF, supervised fine-tuning demonstrations and adversarial red teaming for the most capable models.
Golden trajectories, RL environment design, failure-mode taxonomies and software-engineering-driven deep evaluation for autonomous agents.
Multilingual ASR and conversational speech data, expressive TTS annotation, vision-language model training data, video action labelling and voice-agent evaluation.
LiDAR point-cloud labeling, multi-camera sensor fusion, robot demonstration trajectories, world-model rollouts and embodied interaction logs.
Turn the model traffic you already generate into summaries, experiments, and training data
Point the official OpenAI SDK at Milk Parlor by changing just OPENAI_BASE_URL and OPENAI_API_KEY; Chat Completions and Responses calls stay exactly as they were.
Parlor returns your model's answer as usual while saving eligible request–response pairs in the background, grouped as tasks under your account's unique ID.
A heartbeat counts saved exchanges without making model calls, and at configurable thresholds a job summarizes topics, tasks, and response times.
Give it a goal and it runs commands, starts cloud models, measures results, and saves what it learns — continuing even after you close the dashboard.
SpecialistConnects teams directly with verified human participants for preference tuning and studies, but lacks managed end-to-end labeling pipelines.
SpecialistConnects teams directly with verified human participants for preference tuning and studies, but lacks managed end-to-end labeling pipelines.
Free / Open-sourceGive your AI agents secure, authenticated access to 1,700+ apps
Free / Open-sourceGive your AI agents secure, authenticated access to 1,700+ apps
Blends custom software with dedicated human expert teams to handle complex operations, but operates as a bespoke service.
Blends custom software with dedicated human expert teams to handle complex operations, but operates as a bespoke service.
Combines robust data labeling tools with automated workflows, but focuses more on software tooling than managed human workforces.
Combines robust data labeling tools with automated workflows, but focuses more on software tooling than managed human workforces.
Free / Open-sourceHigh-trust frontier inference, encrypted end to end
Free / Open-sourceHigh-trust frontier inference, encrypted end to end
The data, evaluations and systems behind AI that has to be right.
Delivers advanced multimodal data curation and annotation infrastructure, but requires your own annotation workforce for labeling tasks.
Delivers advanced multimodal data curation and annotation infrastructure, but requires your own annotation workforce for labeling tasks.
Free / Open-sourceThe TypeScript framework for building, deploying, and observing AI agents
Free / Open-sourceThe universal context engine connecting agents to data, tools, and models
Free / Open-sourceFast Apply and agent-tuned inference for coding agents
Free / Open-sourceFast Apply and agent-tuned inference for coding agents
SpecialistAgent observability, evaluation, and continuous improvement for production AI
SpecialistAgent observability, evaluation, and continuous improvement for production AI
SpecialistThe multimodal data layer for computer vision and physical AI teams
SpecialistThe multimodal data layer for computer vision and physical AI teams
