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Langfuse vs NeuralTrust

Provides open-source observability for LLM apps, but not a zero-trust gateway or red-team testing.
LangfuseOpen Source Observability & Analytics for LLM Apps 🕵️‍♂️NeuralTrustLLM Gateway and Red Teaming

Side by side

What it is
Langfuse:Langfuse is an open-source platform for tracing, evaluating and monitoring LLM applications and AI agents.
NeuralTrust:NeuralTrust provides a zero-trust AI gateway, observability, and red-team testing to secure and scale LLM applications and agents.
Best for
Langfuse:LLM observability & analytics
NeuralTrust:Zero-trust security for AI agents
Who it’s for
Langfuse:Developers building, debugging and scaling LLM-based apps and agents.
NeuralTrust:Enterprises deploying LLMs, chatbots, and autonomous AI agents.
Pricing
Langfuse:Freemium
NeuralTrust:Contact sales
Plans
Langfuse:Hobby Free · Core $29 per month · Pro $199 per month · Enterprise $2499 per month
NeuralTrust:—
Open source
Langfuse:Yes, 35,097 GitHub stars
NeuralTrust:—
Works with
Langfuse:Python, TypeScript, Go, Java, .NET, Ruby, PHP, Swift
NeuralTrust:Microsoft Copilot, ChatGPT, Gemini
DevHunt upvotes
Langfuse:89
NeuralTrust:0
Launched on DevHunt
Langfuse:Jan 2023
NeuralTrust:Jan 2026

Langfuse features

  • Hierarchical Traces. Capture every LLM call, tool invocation and retrieval step with filters for user, session, cost and latency.
  • Prompt Management. Version, fetch, release and cache prompts separately from code with one-click deployments.
  • Evaluation Engine. Run LLM-as-judge, heuristic or human-review evaluations on production data or experiments.
  • Experiments & Datasets. Define test cases, run experiments and create golden datasets for continuous improvement.
  • Dashboards & Alerts. Monitor cost, latency and quality via custom dashboards and automated alerts.
  • Human Annotation. Collaborative human-in-the-loop workflows with annotation queues.
  • Extensive Integrations. Supports Python, TypeScript, Go, Java, .NET, Ruby, PHP, Swift and 100+ agent frameworks and model providers.
  • Self-hosted & Cloud Options. Available as hosted SaaS or self-hosted under MIT license.
Langfuse on DevHunt →Alternatives

NeuralTrust features

  • TrustGate. Open-source AI gateway with zero-trust policies, traffic management and semantic caching.
  • TrustTest. Adversarial testing framework that finds jailbreaks, vulnerabilities and hallucinations.
  • TrustLens. Real-time observability dashboard delivering analytics on LLM behavior.
  • Agent Runtime Security. Monitors and protects each prompt, response and tool call in real time.
  • Agent Posture Management. Discovers and governs every AI agent across the organization.
NeuralTrust on DevHunt →Alternatives

Based on each tool's website and DevHunt data. Details may change; check the official sites.