Is AIgateway a drop-in replacement for OpenRouter?

Yes if you're using OpenRouter's OpenAI-compatible surface. Change the base URL to https://api.aigateway.sh/v1 and swap the API key — every other line of code stays the same. Streaming format is unchanged.

Will my existing model slugs work?

Yes — model slugs are 1:1 compatible (anthropic/claude-opus-4.7, openai/gpt-5.4, etc).

How long does migration take?

60 seconds if you run `aig migrate openrouter` (it scans your codebase and rewrites the patterns automatically). Test suite should be green immediately because the OpenAI surface is preserved.

Can I get a credit match for my OpenRouter invoice?

Yes — email your last OpenRouter invoice to switch@aigateway.sh and we match the credit (up to $1,000) within 24 hours. See /switch/openrouter for details.

What's different about AIgateway's pricing?

5% per call (our entire revenue model) + payment-processor passthrough at top-up (Stripe's standard rate). No monthly fee, no seat fee, no per-model surcharge. Cached requests get a 50% discount. $5 free credits on signup, redeemable on a curated edge-tier shortlist (Kimi K2.6, FLUX-2 Klein, Whisper Turbo, Aura 2, Gemma 4 vision, BGE-M3, Llama Guard 3), valid for 7 days. Topups never expire and unlock the full catalog.

View as /docs.md

Migrate

Migrate from OpenRouter

Drop in for OpenRouter. Same OpenAI-compatible API, broader catalog (video / audio / music / 3D), lower platform fee on top-ups, evals + sub-accounts included.

CLI automation for OpenRouter is shipping: `aig migrate openrouter` walks the working tree and rewrites every match.

TL;DR — three lines

# 1. set your AIgateway key
export AIGATEWAY_API_KEY="sk-aig-..."

# 2. change the base URL
base_url="https://api.aigateway.sh/v1"  # was https://openrouter.ai/api/v1

# 3. aig migrate openrouter     # or rewrite by hand

Automated: `aig migrate openrouter`

Walks the current directory tree (ignoring node_modules, build outputs, lockfiles), shows you a preview of every change, and applies them after a y/N confirmation. Leaves *.aig-migrate.bak backups alongside each rewritten file unless you pass --no-backup.

# install once
npm i -g aigateway-cli

# preview without writing
aig migrate openrouter --dry-run

# apply (with backups)
aig migrate openrouter

# CI-friendly: skip the prompt
aig migrate openrouter --yes --no-backup

What changes, line-by-line

The table below is what aig migrate openrouter rewrites. If you're doing it by hand, do these in order.

Thing	OpenRouter	AIgateway
Base URL	https://openrouter.ai/api/v1	https://api.aigateway.sh/v1
API key env var	OPENROUTER_API_KEY	AIGATEWAY_API_KEY
Auth header	Authorization: Bearer …	Authorization: Bearer …
Model slug format	anthropic/claude-opus-4.7	anthropic/claude-opus-4.7
Streaming format	OpenAI SSE	OpenAI SSE
Platform fee	5.5% at top-up	5% per call (no top-up fee beyond Stripe)
BYOK fee	5% (after 1M free/mo)	0% on BYOK traffic
Cost-attribution headers	—	x-aig-tag (any string)

Before / after — Python (OpenAI SDK)

BEFORE · OpenRouter

from openai import OpenAI

client = OpenAI(
    base_url="https://openrouter.ai/api/v1",
    api_key=os.environ["OPENROUTER_API_KEY"],
)
r = client.chat.completions.create(
    model="anthropic/claude-opus-4.7",
    messages=[{"role": "user", "content": "Hi"}],
)

AFTER · AIgateway

from openai import OpenAI

client = OpenAI(
    base_url="https://api.aigateway.sh/v1",
    api_key=os.environ["AIGATEWAY_API_KEY"],
)
r = client.chat.completions.create(
    model="anthropic/claude-opus-4.7",
    messages=[{"role": "user", "content": "Hi"}],
)

Behavioral notes

Model slugs are 1:1 compatible — no model-name rewrites needed.
OpenRouter's x-or-* headers (route, fallbacks) map to AIgateway routing rules in the dashboard.
Cache discount: AIgateway gives 50% off cached requests automatically (not in OpenRouter).

Credit match

Email your last invoice from OpenRouter to switch@aigateway.sh and we match the credit up to $1,000 (24-hour turnaround). Or read the full pitch at /switch/openrouter.