Helicone

Helicone gives developers complete visibility into their LLM applications from development to production. The platform tracks request latency, token usage, and API costs in real time, helping teams identify bottlenecks and control expenses. Beyond monitoring, Helicone includes a sandbox playground for prompt testing, dataset management for model evaluation, and customizable alerts for critical issues.

Highlights

• Multi-model support with unified dashboard across OpenAI, Anthropic, Azure, Google, DeepSeek, and Mistral
• Prompt management and versioning for collaborative development teams
• Usage-based pricing with detailed cost tracking per request and model
• Open-source philosophy with flexible deployment options
• Dataset and evaluation tools for continuous improvement of LLM behavior

Helicone appeals to startups and enterprises building production AI applications. Whether you're managing a single LLM or orchestrating multiple models, the platform offers the instrumentation needed to run reliably and cost-effectively. The free tier includes 10,000 monthly requests, with paid plans starting at $79/month for teams requiring advanced features and higher limits.