Compare
Bifrost vs Langfuse
Offers LLM app observability but not routing or gateway features.
BifrostThe fastest LLM gateway in the market.png?width=96)
LangfuseOpen Source Observability & Analytics for LLM Apps 🕵️♂️Which to pick
Pick Bifrost if you want…
- Fast, governed LLM routing
- Integrations with Google GenAI, HashiCorp Vault or AWS Secrets Manager (on Bifrost's list, not Langfuse's)
Pick Langfuse if you want…
- LLM observability & analytics
- Integrations with Python, TypeScript or Go (on Langfuse's list, not Bifrost's)
Side by side
- What it is
- Bifrost:Bifrost is an open-source, high-performance LLM gateway that provides fast, scalable routing, governance and observability for AI models.
- Langfuse:Langfuse is an open-source platform for tracing, evaluating and monitoring LLM applications and AI agents.
- Best for
- Bifrost:Fast, governed LLM routing
- Langfuse:LLM observability & analytics
- Who it’s for
- Bifrost:AI teams and enterprises needing reliable, low-latency LLM routing and management.
- Langfuse:Developers building, debugging and scaling LLM-based apps and agents.
- Pricing
- Bifrost:Freemium
- Langfuse:Freemium
- Plans
- Bifrost:OSS Free
- Langfuse:Hobby Free · Core $29 per month · Pro $199 per month · Enterprise $2499 per month
- Open source
- Bifrost:Yes, 8,528 GitHub stars
- Langfuse:Yes, 35,097 GitHub stars
- Works with
- Bifrost:OpenAI, Anthropic, Vercel AI SDK, LangChain, Google GenAI, LiteLLM, HashiCorp Vault, AWS Secrets Manager
- Langfuse:Python, TypeScript, Go, Java, .NET, Ruby, PHP, Swift
Bifrost features
- Low-latency routing. Adds only 11 µs latency at 5,000 RPS, 40-50× faster than LiteLLM.
- Robust governance. Weighted API-key rotation, virtual keys, budgets and SSO support.
- Plugin-first architecture. Simple custom plugin creation without callback complexity.
- MCP integration. Built-in Model Context Protocol for tool execution and federated auth.
- Built-in observability. OpenTelemetry metrics, tracing and dashboard for real-time monitoring.
- Guardrails & safety. Real-time content protection and compliance enforcement.
- Drop-in replacement. Replace any AI SDK with one line change; works with OpenAI, Anthropic, Vercel AI SDK, LangChain, Google GenAI, LiteLLM and more.
- Enterprise features. Cluster mode, adaptive load balancing, VPC/on-prem deployment, Vault secret management and SLA support.
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.
Bifrost vs Langfuse FAQ
Is Bifrost or Langfuse free?+
Bifrost has a free plan (OSS) and paid plans. Langfuse has a free plan (Hobby); paid plans start at $29/month (Core).
Is Bifrost or Langfuse open source?+
Yes, both are open source: Bifrost (maximhq/bifrost on GitHub, Apache-2.0 license) and Langfuse (langfuse/langfuse on GitHub).
Do Bifrost and Langfuse integrate with the same tools?+
Partly. Both list OpenAI, Anthropic, Vercel AI SDK, LangChain and 1 more. Bifrost also lists Google GenAI, HashiCorp Vault, AWS Secrets Manager, Google Secret Manager and 1 more; Langfuse also lists Python, TypeScript, Go, Java and 5 more.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.