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Alternatives
Honest, side-by-side comparisons with OpenRouter, LiteLLM, Portkey and a router you build yourself: what each does well, where OpenSmartRoute is different, when to pick which, and how to run them together.
Scored from each product's public documentation as of 2026-10-07 - what each one documents it can do, not independent benchmark or performance results - and corrected when a vendor changes something. The per-product pages below carry the full list with notes, when to pick each and how to run the two together. A gateway that forwards to models is table stakes - the rows further down are where the products part.
| Capability | OpenRouter | LiteLLM | Portkey | OpenSmartRoute |
|---|---|---|---|---|
| Routes to LLMs | ||||
| OpenAI-compatible proxy (chat, embeddings, Responses, moderations, audio, images) | partial | |||
| Routes to agents, skills, tools, workflows and humans | ||||
| Hard policy before scoring (region, data boundary, PII, tenant, cost) | partial | partial | ||
| Per-request trace with ranked candidates and rejections | ||||
| Learns from your outcomes (per target, per tenant) | partial | |||
| Multi-step plans (persona -> skill -> model) | ||||
| Self-hosted, air-gapped, zero runtime dependencies | partial | partial | ||
| Savings ledger, bill analysis and routing audit | ||||
| MCP server for IDEs and agents | partial | partial | ||
| Browser extension and desktop app for the people on the team |
OpenRouter gives you hundreds of models behind one API with credits and a market-ranked auto mode. OpenSmartRoute decides across every capability you own, not just models, enforces your policy first and learns from your outcomes anywhere you run it.
“OpenRouter for every capability, not just models - and you can run it yourself.”
LiteLLM is an excellent execution layer: one SDK and proxy for 100+ providers with keys, budgets and fallbacks. OpenSmartRoute adds the decision layer on top: which capability, under which policy, explained, and learned from outcomes.
“LiteLLM documents an execution layer; OpenSmartRoute adds the decision layer in front of it.”
Portkey (like Helicone and Kong AI Gateway) sees every call: logs, guardrails, caching and retries. OpenSmartRoute chooses the route across kinds with a cost/quality objective and learns from outcomes; run it behind the gateway you already have.
“Portkey observes and gates the traffic you already route; OpenSmartRoute chooses the target for each request and learns from the outcome.”
Cloudflare AI Gateway sits at the edge in front of your providers: logs, caching, rate limits, retries and fallbacks with almost no setup. OpenSmartRoute is the decision behind it - which capability, under which policy, at which price, explained and learned - and it runs wherever your data may go, including nowhere near a public edge.
“Cloudflare's AI Gateway caches, limits and logs the calls your code already addresses to a model; OpenSmartRoute decides which model, agent or tool each request should go to.”
Bifrost is Maxim AI's Go gateway: one OpenAI-compatible endpoint over the major providers with virtual keys, budgets, semantic caching, load balancing, an MCP gateway and very low per-request overhead, paired with Maxim's evaluation and observability suite. OpenSmartRoute is the decision in front of execution: which model, agent, tool or person under your policy, with a ranked trace, learning from your outcomes, a response cache and a savings ledger, self-hosted with zero dependencies.
“Bifrost forwards the model call your code already addressed; OpenSmartRoute decides which capability should get it.”
Kong adds AI plugins to the API gateway many platform teams already run: an OpenAI-compatible proxy across providers, token-based rate limiting, prompt guards and load balancing between models. OpenSmartRoute is the routing brain those plugins call: a cost/quality objective per request, hard policy before scoring, a trace for every decision and learning from your outcomes.
“Kong authenticates, limits and meters API traffic at the edge; OpenSmartRoute selects the target behind it by cost, quality, latency and policy.”
Helicone is observability first: every call logged with properties, costs and sessions, plus a gateway with caching, rate limits and fallbacks. OpenSmartRoute is the decision the gateway forwards: which target across kinds, under your policy, with a trace that names the alternatives and the rejections - and a ledger finance can recompute.
“Helicone records what each call cost and returned; OpenSmartRoute uses that kind of outcome to choose the next target, and records the choice.”
Not Diamond recommends the best model for a prompt from a router trained on large evaluation data, and can train a custom router on your evaluation set. OpenSmartRoute learns from the outcomes of your own traffic, per target and per tenant, routes across agents, tools and people as well as models, enforces hard policy first, and runs wherever you do.
“Learned routing you own, for more than models.”
Martian routes each prompt to the model it predicts will do best for the price, behind a hosted API. OpenSmartRoute makes the same kind of decision with your own outcomes and your own policy, across every capability you operate, with a trace per request - and the package is Apache-2.0 with zero dependencies, so the router is yours.
“The same idea, on your infrastructure, for every capability.”
Unify routes to the model endpoint that best balances quality, speed and cost from its live benchmarks, behind one API key. OpenSmartRoute uses your outcomes rather than public benchmarks, weighs cost and quality per request under hard policy, routes to more than models and runs self-hosted.
“Benchmarks say what is good in general; your outcomes say what is good for you.”
Requesty is a hosted gateway: change the base URL and reach hundreds of models through one key with failover, caching, spend limits and PII masking, popular with Cursor, Cline and Roo Code users. OpenSmartRoute decides across every capability you own - models, agents, tools, people - under hard policy, explains each decision, learns from your outcomes and runs self-hosted.
“A gateway swaps the URL; a router decides, explains and learns.”
Building internally gives you full control, and then the ongoing work: policy, outcome learning, drift detection, audit, explainability, evaluation and the maintenance after every model release. OpenSmartRoute is Apache-2.0 with zero dependencies, so you build on it rather than instead of it.
“Build on it, not instead of it.”
Every page scores the same capability list from public documentation: which kinds of targets each product routes to (models only, or agents, skills, tools and humans too), whether hard policy runs before scoring, whether decisions come with a trace, whether the router learns from your outcomes, and what it takes to self-host. Products change quickly - if something here is out of date, tell us at support@opensmartroute.ai and we will check it against the vendor's documentation and correct the page.
The benchmark is the proof behind the claims above - 150 real prompts, every candidate priced and scored. The ROI calculator prices what routing saves at your volume; the playground shows a live decision with every candidate ranked.
Photo: MART PRODUCTION
