Migrating from OpenRouter

OpenRouter is a great router. prxy.monster adds composable modules — caching, cost guards, persistent learning — on top of routing.

What’s the same

• One key for many providers.
• OpenAI-compatible API.
• Drop-in BASE_URL replacement.
• BYOK supported.

What’s different

Diff: env vars

- OPENAI_BASE_URL=https://openrouter.ai/api/v1
- OPENAI_API_KEY=sk-or-xxx
+ OPENAI_BASE_URL=https://api.prxy.monster/v1
+ OPENAI_API_KEY=prxy_live_xxx
+ # Set your provider key in the dashboard or pass it per-request via headers.

If you were using OpenRouter for Anthropic models specifically:

- (No Anthropic-shape support on OpenRouter — you used /chat/completions for everything)
+ ANTHROPIC_BASE_URL=https://api.prxy.monster
+ ANTHROPIC_API_KEY=prxy_live_xxx

You can now use the native Anthropic SDK against /v1/messages, not just the OpenAI shape.

Migrating fallback chains

OpenRouter format:

{
  "model": "anthropic/claude-sonnet-4-6",
  "models": ["openai/gpt-4o", "google/gemini-2.0-pro"]
}

prxy.monster (when router module ships in v1.1):

pipeline:
  - router:
      strategy: 'fallback'
      fallback_chain:
        - claude-sonnet-4-6
        - gpt-4o
        - gemini-2.0-pro

For v1, configure fallback at the SDK level until the router module ships.

Migrating route-by-cost

OpenRouter has :nitro and :floor suffixes. prxy.monster accomplishes the same with explicit configuration:

pipeline:
  - cost-guard:
      perRequest: 0.005       # only allow cheap models
  - router:                   # v1.1 — picks cheapest available
      strategy: 'cheapest-first'

What you gain

• Caching — a 30% cache hit rate on a support workload turns into 30% cost savings, immediately.
• Cost caps that work — hard daily ceiling, not just monthly.
• Local mode — run the whole thing on your hardware for sensitive workloads.
• Persistent memory — your AI gets smarter at your specific use case.

What you lose (and how we make up for it)

Switch in 60 seconds

# 1. Sign up at prxy.monster
# 2. Copy your API key
# 3. Update env:
export OPENAI_BASE_URL=https://api.prxy.monster/v1
export OPENAI_API_KEY=prxy_live_xxxxxxxxxxxx
# 4. (One time) Add your provider keys at app.prxy.monster/providers

Your code doesn’t change.