Compare Helicone and Martian side by side. Both are tools in the LLM Gateways category.
Updated March 10, 2026
Choose Helicone if extremely simple integration (one line of code).
Choose Martian if developer-friendly platform.
Want to compare Helicone and Martian on your own traffic?
Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 250+ models through one gateway. Free tier covers 10K traces per month. Setup in 5 minutes, no credit card.
| Category | LLM Gateways | LLM Gateways |
| Pricing | Freemium | Usage-based |
| Best For | Developer teams who need visibility into their LLM usage, costs, and performance | Teams who want AI to automatically pick the best model for each request based on quality and cost |
| Website | helicone.ai | withmartian.com |
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Helicone is an open-source LLM observability platform providing monitoring, logging, and analytics for AI applications. The platform offers detailed insights into LLM requests, costs, latency, and user behavior with minimal integration overhead—just one line of code to get started. Helicone supports all major LLM providers and provides features like caching, rate limiting, prompt management, and user tracking. The platform is available as both open-source for self-hosting and as a managed cloud service with generous free tiers. Helicone helps teams understand and optimize their AI applications through comprehensive observability.
Martian provides model routing and cost optimization for multi-LLM deployments. The platform provides comprehensive features for production AI applications with focus on reliability and developer experience.
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 Gatewaystools →One platform for routing, observability, tracing, and evals across every LLM provider.