Compare
Fluent CI vs Langfuse
Fluent CI automates CI/CD pipelines, unrelated to LLM observability.
Fluent CIWrite your CI/CD Pipelines in Typescript! No YAML.png?width=96)
LangfuseOpen Source Observability & Analytics for LLM Apps 🕵️♂️Which to pick
Pick Fluent CI if you want…
- TypeScript-based CI pipelines
- CI/CD pipeline scripting
- A free, open-source tool
- Integrations with Deno, Gleam or Rescript (on Fluent CI's list, not Langfuse's)
Pick Langfuse if you want…
- LLM observability & analytics
- Integrations with TypeScript, Go or Java (on Langfuse's list, not Fluent CI's)
Side by side
- What it is
- Fluent CI:Fluent CI lets you write CI/CD pipelines in TypeScript instead of YAML.
- Langfuse:Langfuse is an open-source platform for tracing, evaluating and monitoring LLM applications and AI agents.
- Best for
- Fluent CI:TypeScript-based CI pipelines
- Langfuse:LLM observability & analytics
- Who it’s for
- Fluent CI:Developers who prefer a real programming language for CI/CD pipelines.
- Langfuse:Developers building, debugging and scaling LLM-based apps and agents.
- Pricing
- Fluent CI:Open source
- Langfuse:Freemium
- Plans
- Fluent CI:—
- Langfuse:Hobby Free · Core $29 per month · Pro $199 per month · Enterprise $2499 per month
- Open source
- Fluent CI:Yes, 122 GitHub stars
- Langfuse:Yes, 35,097 GitHub stars
- Works with
- Fluent CI:Deno, Gleam, Rescript, Rust, Bun, Cloudflare, Terraform, Android
- Langfuse:Python, TypeScript, Go, Java, .NET, Ruby, PHP, Swift
Fluent CI features
- TypeScript pipelines. Define build, test, and deploy steps using TypeScript code.
- Self-hosted. Run Fluent CI locally or on any server you control.
- FluentCI Studio. Graphical UI to explore and edit pipelines across projects.
- Plugin SDK. Write custom CI plugins with IDE auto-completion and type checking.
- 170+ extensions. Ready-made pipelines for many languages and services.
- Dagger & Deno core. Built on Dagger for portable pipelines and Deno for secure execution.
- Registry of pre-built pipelines. Browse and reuse community pipelines for common stacks.
- CI provider integration. Develop locally then push pipelines to any CI provider.
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.
Fluent CI vs Langfuse FAQ
Is Fluent CI or Langfuse free?+
Fluent CI is free and open source. Langfuse has a free plan (Hobby); paid plans start at $29/month (Core).
Which is cheaper, Fluent CI or Langfuse?+
Fluent CI is free, so it costs less. Langfuse starts at $29/month (Core).
Is Fluent CI or Langfuse open source?+
Yes, both are open source: Fluent CI (fluentci-io/fluentci on GitHub, MPL-2.0 license) and Langfuse (langfuse/langfuse on GitHub).
Do Fluent CI and Langfuse integrate with the same tools?+
Partly. Both list Python. Fluent CI also lists Deno, Gleam, Rescript, Rust and 9 more; Langfuse also lists TypeScript, Go, Java, .NET and 9 more.
On DevHunt
Fluent CI
158 upvotes · Launched on DevHunt on Jan 9, 2024
Based on each tool's website and DevHunt data. Details may change; check the official sites.