Helicone

Helicone is an open-source platform designed to help developers and companies build, monitor, and scale reliable AI applications powered by large language models (LLMs). Acting as an AI gateway, Helicone provides observability, routing, and debugging tools that allow teams to track and analyze every LLM request in real time.

With Helicone, users can quickly integrate their AI models—such as those from OpenAI, Anthropic, Google, and Meta—using simple SDKs or API keys. The platform logs requests, monitors performance, and helps identify bottlenecks, making it easier to debug and optimize AI-powered products. This observability ensures that applications remain robust and cost-effective as they scale.

Helicone also offers a comprehensive model registry, enabling users to compare over 500 AI models across different providers. This helps teams choose the best models for their needs based on cost, context window, and other parameters. The platform is designed for the entire LLM lifecycle, supporting everything from MVP development to production deployment.

Flexible, usage-based pricing and special discounts for startups and educators make Helicone accessible to a wide range of organizations. Its open-source nature and provider-agnostic approach give users more flexibility and control over their AI infrastructure.