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Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.
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DeepSeek
✓ verifiedFreemium
Chinese AI lab DeepSeek offering free chat apps and low-cost API access to its frontier V-series and R-series reasoning models.
430M visits/mo
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Weights & Biases
✓ verifiedFreemium
Weights & Biases is a widely used MLOps platform for experiment tracking, model management and evaluating AI applications.
2.5M visits/mo
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Confident AI
✓ verifiedFreemium
LLM evaluation and observability platform from DeepEval's makers for testing, tracing, red-teaming and governing AI applications.
102K visits/mo
Pricing
No public pricing
No public pricing
Free: $0 (limited)
Starter: $9.99/user/mo
Core features
- ✦Free DeepSeek chat (web and app)
- ✦Open API platform
- ✦V-series and R-series reasoning models
- ✦DeepSeek-V4 with long context and stronger agent ability
- ✦OpenAI/Anthropic-compatible API
- ✦Extensive published model lineup
- ✦Experiment tracking and visualization for ML training runs
- ✦Model and artifact versioning and management
- ✦Hyperparameter optimization tooling
- ✦Collaborative dashboards and reports for ML teams
- ✦LLM application tracing and evaluation tooling
- ✦LLM evaluation with research-backed metrics
- ✦Production tracing and observability
- ✦AI red-teaming and adversarial testing
- ✦AI governance and standards enforcement
- ✦Prompt versioning and datasets
- ✦CI/CD and real-time alerting
Use cases
- →Free AI chat and assistance
- →Building apps via API
- →Reasoning and coding tasks
- →Low-cost LLM inference
- →ML engineers tracking and comparing training experiments
- →Research teams versioning datasets and model checkpoints
- →Teams building and evaluating LLM-powered applications
- →Organizations collaborating on machine learning projects
- →Benchmark and regression-test LLM systems
- →Trace and monitor production LLM apps
- →Stress-test apps against attacks
- →Standardize AI quality across teams
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