Langfuse vs SearchApi

Langfuse offers observability for LLM apps, not search data retrieval.

Which to pick

LLM observability & analytics
A free plan to start with (Hobby)
Open-source code (langfuse/langfuse on GitHub)
Integrations with Python, TypeScript or Go (on Langfuse's list, not SearchApi's)

What it is: Langfuse:Langfuse is an open-source platform for tracing, evaluating and monitoring LLM applications and AI agents.; SearchApi:SearchApi provides real-time search APIs (Google, Scholar, Trends, Jobs, Amazon, YouTube) delivering JSON results instantly.
Best for: Langfuse:LLM observability & analytics; SearchApi:Real-time SERP data via API
Who it’s for: Langfuse:Developers building, debugging and scaling LLM-based apps and agents.; SearchApi:Developers building search-powered apps or AI agents that need reliable SERP data.
Pricing: Langfuse:Freemium; SearchApi:Paid
Plans: Langfuse:Hobby Free · Core $29 per month · Pro $199 per month · Enterprise $2499 per month; SearchApi:Developer $4 per 1,000 searches per month · Production $3 per 1,000 searches per month · BigData $2.5 per 1,000 searches per month · Scale $2 per 1,000 searches per month · Octo 500K $1.8 per 1,000 searches per month
Open source: Langfuse:Yes, 35,097 GitHub stars; SearchApi:—
Works with: Langfuse:Python, TypeScript, Go, Java, .NET, Ruby, PHP, Swift; SearchApi:LangChain

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.

Multiple Search Engines. Access Google, Google Scholar, Trends, Jobs, Amazon and YouTube transcript search through a single endpoint.
Geo-Targeted Results. Precise coordinate-level geo-targeting for location-specific queries.
Pay-only-for-Success. Charges apply only to successful 200-status searches; failed requests are free.
High Success Rate. 99.9% SLA ensures reliable query fulfillment.
Fast Delivery. Results returned in seconds, with enhanced speed plans offering up to 2× faster throughput.
Native LangChain Integration. Ready-to-use connectors for LangChain and other AI frameworks.

Is Langfuse or SearchApi free?+

Langfuse has a free plan (Hobby); paid plans start at $29/month (Core). SearchApi is paid, with a free trial.

Is Langfuse or SearchApi open source?+

Langfuse is open source (langfuse/langfuse on GitHub). DevHunt has no public source repository on record for SearchApi.

Do Langfuse and SearchApi integrate with the same tools?+

Partly. Both list LangChain. Langfuse also lists Python, TypeScript, Go, Java and 9 more.

Langfuse

89 upvotes · Launched on DevHunt on Jan 10, 2023

SearchApi

16 upvotes · Launched on DevHunt on Jan 23, 2024

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