ParseRail
Paid
Teams needing reliable document AI APIs
Juggling API keys across Claude Code, OpenAI Codex, and Gemini CLI means three billing dashboards, three quota limits, and a different endpoint in every config file — Agent Router exists to collapse that into one.
Free tier: Anonymous access is rate-limited per IP. Register for a free API key to get significantly higher limits — still no cost. Normal usage has no hidden limits. · Checked Oct 25, 2026
Agent Router is a gateway that sits in front of multiple LLM providers and exposes a single OpenAI-compatible endpoint, so any framework that already speaks to OpenAI drops in without a rewrite. The prepaid credits model means you load credits once and route across providers without managing per-provider subscriptions. Routing decisions can steer traffic toward lower-cost models, which matters when agent loops make hundreds of small calls per task. The ceiling appears when you need dynamic routing logic — branching based on latency, error rate, or output quality — because a passive gateway does not make those decisions for you. Teams that need intelligent failover or cost-aware model selection based on task type end up writing that logic themselves on top of the gateway.
Bottom line: Use this to unify billing and endpoint configuration across Claude, OpenAI, and Gemini for teams spending too much time on provider plumbing — but if your routing needs to react to live performance data, you are building that layer yourself.
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Agent Router is a hosted LLM gateway that accepts requests through an OpenAI-compatible API and forwards them to the appropriate backend provider — Claude, OpenAI, Gemini, or others. The core workflow is: get one API key from Agent Router, point your existing tooling at the Agent Router endpoint, and specify the target model per request. No changes to the calling code beyond the base URL and key. Prepaid credits cover usage across providers from a single balance, replacing per-provider subscriptions.
The differentiating feature is the unified endpoint combined with the prepaid credit system. Most developers reaching for a multi-provider setup either hard-code per-provider clients and manage keys separately, or pay overlapping subscription fees across tools like Claude Code and Codex. Agent Router removes both problems — one key, one balance, one endpoint — and the vendor states enterprise-scale usage tracking is available for teams that need visibility across large call volumes.
This fits cleanly into agent frameworks and coding tool pipelines that already conform to the OpenAI API contract. If your framework uses the OpenAI SDK and you want to switch a specific agent to Claude without touching the framework code, this is the drop-in path. Where it breaks: Agent Router is a passive gateway. It forwards your request to the provider you name. It does not watch latency, detect provider outages and reroute automatically, or select the cheapest available model for a given task on its own. Teams that need that logic build it above the gateway layer, which means they are maintaining routing rules Agent Router does not execute.
The self-hosted option does not exist — traffic routes through Agent Router’s infrastructure, so teams with data residency requirements or air-gapped environments cannot use this. Enterprise usage tracking is a paid-only feature, so smaller teams on free credits see aggregate usage but not the granular per-agent or per-project breakdowns that operations teams typically need at scale.
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