docs: add OrcaRouter as an OpenAI-compatible provider example

[bangla24bdrang-lab]

Summary

Adds OrcaRouter as a documented example of an OpenAI-compatible AI gateway, alongside LocalAI and OpenRouter in docs/other-models.md.

OrcaRouter is an OpenAI-compatible AI gateway built for both models and agents. Like OpenRouter, it exposes a provider/model namespace across many models — but it also combines adaptive routing, automatic failover, zero-markup inference, observability, guardrails, and agent-tool governance behind the same endpoint. Adding it as a documented provider means LLM users can use that stack directly, without treating OrcaRouter as an anonymous custom base URL. It also runs gateway-level, zero-trust security for AI agents on the same endpoint — screening every prompt/response and governing every tool call on a default-deny basis, with no application code changes.

What changed

This updates docs/other-models.md with a new OrcaRouter section showing how to configure OrcaRouter models through extra-openai-models.yaml, mirroring the existing OpenRouter / AGIone examples.

The examples use full OrcaRouter model identifiers:

• orcarouter/auto — the adaptive router endpoint
• openai/gpt-5.5 — a vendor-prefixed model identifier

Why

OrcaRouter provides a single OpenAI-compatible endpoint for routing to frontier models through standard Bearer-token authentication, using the same provider/model namespace style as OpenRouter.

This fits the existing "OpenAI-compatible models" documentation pattern used for providers like LocalAI and OpenRouter.

Verification

• Live-tested both example models (orcarouter/auto and openai/gpt-5.5) against https://api.orcarouter.ai/v1 with a real API key — both return 200 with a normal chat completion.
• Ran the documented user flow end-to-end: llm keys set orcarouter, configured extra-openai-models.yaml, llm models shows both models, and llm -m orcarouter-auto '...' / llm -m orcarouter-gpt-5 '...' both returned a completion.
• Test suite: 1105 passed.
• Linters: black --check, ruff check ., mypy llm, and cog --check all pass.

Disclosure

I'm an engineer on the OrcaRouter team.

Discord: discord.gg/YEubt8enRA · X: https://x.com/OrcaRouter