Martian Alternatives
Martian no longer presents its router as a product. The company now sells interpretability research.
If you are still running it, treat migration as scheduled work rather than a backlog item.
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Teams with engineering capacity that want provider-agnostic routing with no per-token markup, particularly at volumes where a percentage fee on a managed gateway becomes significant.
From $0 self-hosted Self-hosts free - 2
Teams already on Cloudflare who want caching, rate limiting and cost visibility at the edge with no markup, and who have separate tooling for evaluation.
From $0 Bills records - 3
Teams already running a gateway who want smarter per-request model selection without putting another vendor in the request path, particularly for coding agents where model spend is high and uncontrolled.
From Conflicting reports - 4
Small teams and prototypes trying many models without wanting infrastructure, and anyone whose monthly provider spend stays below roughly $5,000 where the markup costs less than running a gateway.
From 5.5% markup Bills markup-pcts - 5
Teams that want one gateway to route, cache, budget and guardrail across many LLM providers, and are fine paying for the managed tier once they need real observability
From $49/mo Self-hosts free - 6
Enterprises that need an AI gateway deployable on-premise or in their own cloud with governance features, and that want a managed product rather than operating open-source infrastructure.
From $499/mo Bills requests - 7
Teams already deploying on Vercel who want provider-agnostic model access at list price with no markup, and who do not need governance features that carry a per-request charge.
From $0 plus provider list price - 8
Organisations already standardised on Kong for API management, where bringing LLM traffic under existing governance matters more than LLM-specific features.
From Around $500/mo (Konnect) Self-hosts free
Frequently Asked Questions
Why do people look for Martian alternatives?
Martian no longer presents its router as a product. The company now sells interpretability research. That is the main reason this search exists, and it makes migration a requirement rather than a preference.
What is the closest free alternative to Martian?
LiteLLM is the strongest option that self-hosts free - Teams with engineering capacity that want provider-agnostic routing with no per-token markup, particularly at volumes where a percentage fee on a managed gateway becomes significant. Free on licence is not free to operate though; you still own the infrastructure and the on-call.
How should I compare the costs?
Not by their published prices, because tools in this category meter different things - spans, events, GB ingested, seats, prompts, or a percentage of provider spend. A $50 plan means something completely different in each case. Model your own request volume and span count through the cost calculator instead.