Compare Helicone and Respan side by side. Both are tools in the LLM Gateways category.
| Category | LLM Gateways | LLM Gateways |
| Pricing | Freemium | Freemium |
| Best For | Developer teams who need visibility into their LLM usage, costs, and performance | AI engineering teams building production LLM applications who need unified access, observability, and cost control |
| Website | helicone.ai | respan.ai |
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Helicone is an open-source LLM observability and proxy platform. By adding a single line of code, developers get request logging, cost tracking, caching, rate limiting, and analytics for their LLM applications. Helicone supports all major LLM providers and can function as both a gateway proxy and a logging-only integration.
Respan is a unified AI gateway that provides a single API endpoint to access 250+ LLMs from every major provider. It offers intelligent model routing, fallback strategies, cost optimization, load balancing, and real-time observability—enabling teams to build resilient AI applications without vendor lock-in. Respan simplifies multi-model orchestration with built-in caching, rate limiting, and usage analytics across all providers.
Unified API platforms and proxies that aggregate multiple LLM providers behind a single endpoint, providing model routing, fallback, caching, rate limiting, cost optimization, and access control.
Browse all LLM Gateways tools →