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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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liteLLM
✓ verifiedFreemium
Open-source AI gateway giving dev teams unified access, fallbacks and spend tracking across 100+ LLMs.
703K visits/mo
Pricing
No public pricing
No public pricing
Open Source: $0 (self-hosted, 100+ providers)
Free trial available
Core features
- ✦AI Voice Agent Testing
- ✦AI Voice Observability
- ✦Scenario Simulation
- ✦Real-time Monitoring
- ✦Alerting
- ✦Performance Evaluation
- ✦Customizable Metrics
- ✦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
- ✦Unified access to 100+ LLMs in OpenAI format
- ✦Cost/spend tracking per key, user and team
- ✦Budgets and rate limiting
- ✦Automatic provider fallbacks and retries
- ✦Virtual keys and team management
- ✦Logging and observability integrations
Use cases
- →Testing new prompts to ensure they don't break critical workflows (e.g., appointment cancellation).
- →Simulating interactions with difficult users (e.g., impatient, interruptive).
- →Replaying problematic real conversations to identify and fix issues.
- →Monitoring compliance checks to prevent errors.
- →Customer Support
- →Outbound Sales
- →Clinic Receptionist
- →Debt Collection
- →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
- →Giving developers governed access to many LLMs
- →Attributing and controlling LLM spend
- →Keeping apps running during provider outages
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