Respan
LLM tracing, evals, and gateway
The top alternatives to Agenta in the Observability, Prompts & Evals space, compared on features, pricing, and what they're best at.
Updated March 10, 2026
AI platform providing comprehensive solutions for enterprise applications. The platform provides essential capabilities for modern AI applications with focus on scalability and reliability.
Respan
LLM tracing, evals, and gateway
LangSmith
Trace visualization for LLM chains
Weights & Biases
ML experiment tracking
MLflow
OpenTelemetry-native tracing
Arize AI
ML observability with LLM support
Langfuse
Open-source LLM observability
Helicone
Datadog LLM
LLM monitoring within Datadog platform
Traceloop
OpenTelemetry
Braintrust
Real-time LLM logging and tracing
HoneyHive
Prompt management
Patronus AI
Automated LLM evaluation platform
Promptfoo
Phoenix
OpenTelemetry-based LLM and agent tracing
Portkey
Humanloop
Sentry
DeepEval
Ragas
RAG-specific evaluation framework
Galileo AI
LLM output quality evaluation
LangWatch
Multi-turn agent simulation testing
PromptLayer
Maxim AI
Distributed tracing for LLM and agent apps
Confident AI
DeepEval open-source evaluation framework
Opik
Lunary
Future AGI
Multimodal evaluation (text, image, audio, video)
Parea AI
Moda
Hallucination detection
Athina AI
Chamber
ML infrastructure automation
Ashr
Multi-modal synthetic testing
Sentrial
Agent failure root cause analysis
One platform for routing, observability, tracing, and evals across every LLM provider.