Models.dev records 200,451 monthly visits with -3.9% month-over-month growth and Free pricing. OpenTrain AI records 1,469,348 monthly visits with +11.2% growth and Contact for Pricing pricing.
Open-source database of AI models, prices and capabilities
Hire tested AI trainers and data labelers for RLHF, evaluation, and annotation
| Dimension / Metric | | |
|---|---|---|
| Official Domain | models.dev | opentrain.ai |
| Pricing Model | Free | Contact for Pricing |
| Monthly Visits | 200.45K (200,451) | 1.47M (1,469,348) |
| MoM Traffic Delta | -8.17K (-3.9%) | +147.68K (+11.2%) |
| Primary Market & Share | 🇨🇳 China (23%) | 🇺🇸 United States (18.6%) |
| Direct Visits / mo | 136.32K | 607.07K |
| User Rating | 4.4 | 4.2 |
| Supported Platforms | Website | Website |
Open-source database of AI models, prices and capabilities
Every model uses a consistent provider/model format so the same model across providers can be compared directly.
Side-by-side context window, output limit, reasoning, tool calling, structured output, and temperature support.
Input and output prices per million tokens listed alongside release and update dates.
Covers closed flagship APIs and open-weight models from many labs in one sortable catalogue.
Hire tested AI trainers and data labelers for RLHF, evaluation, and annotation
Post a project and receive a shortlist drawn from a network of more than 711,000 people across 240+ countries, available in 120+ languages.
Applicants pass automated interviews and domain skill assessments, and managed programs add live proctored testing, so candidates are matched on demonstrated ability rather than self-reported skills.
Hire managers can add experts straight into Label Studio, CVAT, Labelbox, Argilla, or another tool they already run, avoiding data migration.
Beyond standard labeling, the network covers RLHF preference ranking, DPO pair generation, reasoning verification, adversarial red teaming, and human benchmarking.
AI-driven talent marketplace matching domain experts with AI labs, focusing more on long-term remote roles than short tasks.
AI-driven talent marketplace matching domain experts with AI labs, focusing more on long-term remote roles than short tasks.
Massive global pool of subject matter experts for RLHF and model training, but features less personalized curation.
Massive global pool of subject matter experts for RLHF and model training, but features less personalized curation.
SpecialistOffers crowdsourced data collection and annotation at scale, but lacks specialized frontier-model RLHF training workflows.
SpecialistOffers crowdsourced data collection and annotation at scale, but lacks specialized frontier-model RLHF training workflows.
SpecialistEnterprise-grade data labeling and annotation platform, but places more emphasis on tooling than direct expert recruitment.
SpecialistEnterprise-grade data labeling and annotation platform, but places more emphasis on tooling than direct expert recruitment.
SpecialistAdvanced multimodal data annotation platform with robust enterprise management tools, but relies more on software than managed talent.
SpecialistAdvanced multimodal data annotation platform with robust enterprise management tools, but relies more on software than managed talent.
Provides highly vetted human data and evaluation workforces for frontier labs, but caters primarily to enterprise clients.
Provides highly vetted human data and evaluation workforces for frontier labs, but caters primarily to enterprise clients.
SpecialistIncludes model pricing trackers and developer news alongside tools directories, but less focused on raw API specs.
SpecialistIncludes model pricing trackers and developer news alongside tools directories, but less focused on raw API specs.
Free / Open-sourceFree open course for prompt engineering and AI security
Free / Open-sourceFree open course for prompt engineering and AI security
Free / Open-sourceCommunity hub for data science, machine learning and AI practitioners
Free / Open-sourceCommunity hub for data science, machine learning and AI practitioners
SpecialistThe job board built for AI, ML, and data science careers
SpecialistCatalogues and compares AI infrastructure tools and services across categories, but lacks deep per-token pricing tables.
SpecialistCatalogues and compares AI infrastructure tools and services across categories, but lacks deep per-token pricing tables.
Connects AI enterprises with specialized domain experts for data collection and evaluation, but has a smaller talent pool.
Connects AI enterprises with specialized domain experts for data collection and evaluation, but has a smaller talent pool.
