LLM Gateway Migration: OpenRouter / OpenAI / Portkey → nRouter

nRouter speaks the OpenAI API, so migrating is a two-line change:

# Before
client = OpenAI(api_key=os.environ["OPENAI_API_KEY"],
                base_url="https://api.openai.com/v1")
# After
client = OpenAI(api_key=os.environ["NROUTER_API_KEY"],
                base_url="https://api.nrouter.ai/v1")

Per source:

• OpenRouter → swap https://openrouter.ai/api/v1, replace sk-or-… key. Fee: 5.5% → 4% flat, no minimum.
• OpenAI direct → replace api.openai.com/v1. No BYOK — nRouter manages provider keys.
• Portkey → swap api.portkey.ai/v1. Guardrails/observability/prompts/A-B tests included every tier.

Checklist: remap model ids to nRouter ids (e.g. gemini-2.5-flash), parallel-run a traffic slice before full cutover. No migration fee.

Full guide: https://nrouter.ai/migrate

Post by the nRouter team.