AI tools · 79 listed
Find the right AI tool.
Pick a category to see tools, what each is best for, and how to choose between them.
Tools change fast. Prices and features move, so we don't copy prices here. Open the tool's own site for current plans. Listings are not paid placements or endorsements.
How to choose · Testing & monitoring
Look for full traces, easy dataset building from real failures, and the ability to export your data.
6 tools
Testing & monitoringFree tier
Langfuse
Open-source tracing and testing for AI apps, which you can host yourself.
Best for: Seeing every step of your agents and building test sets.
Testing & monitoringOpen source
Arize Phoenix
Open-source tools to trace and evaluate AI apps.
Best for: Debugging and evaluating locally.
Testing & monitoringFree tier
Braintrust
A platform for testing AI quality and tracking changes.
Best for: Running experiments and release gates.
Testing & monitoringFree tier
Helicone
Logs and monitors your AI calls to track cost and usage.
Best for: Cost and usage tracking.
Testing & monitoringFree tier
LangSmith
Tracing, testing and monitoring for AI apps.
Best for: Teams already using LangChain.
Testing & monitoringOpen source
OpenTelemetry
An open standard for collecting traces and metrics from software, including AI apps.
Best for: Vendor-neutral monitoring.