Is AIgateway a drop-in replacement for LiteLLM (managed)?

Yes if you're using LiteLLM (managed)'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?

Some slugs match exactly, others differ. Check /models for the AIgateway equivalent of each model you call. LiteLLM (managed)'s openai/gpt-5.4 (LiteLLM style) → AIgateway uses provider/model.

How long does migration take?

60 seconds if you run `aig migrate litellm` (manually, since CLI automation isn't shipped for this source yet). Test suite should be green immediately because the OpenAI surface is preserved.

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 LiteLLM (managed)

Q: Can I get a credit match for my LiteLLM (managed) invoice?

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

Same OpenAI-compatible surface, with a managed gateway instead of self-hosted. Skip the infra; keep the abstraction.

CLI automation for LiteLLM (managed) isn't shipped yet — you'll do this manually below. PRs welcome at packages/aig-cli/src/commands/migrate.ts.

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 (self-hosted, varies)

# 3. search-and-replace the env var name

What changes, line-by-line

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

Thing	LiteLLM (managed)	AIgateway
Base URL	your-litellm-host/v1	https://api.aigateway.sh/v1
API key env var	LITELLM_MASTER_KEY	AIGATEWAY_API_KEY
Provider model format	openai/gpt-5.4 (LiteLLM style)	openai/gpt-5.4 (same)
Self-hosted infra	You run the proxy	We run the edge (CF Workers, global)
Observability	LiteLLM logs to your sink	AIgateway logs + tags + per-tag budgets
Failover	Configured in LiteLLM YAML	Configured in AIgateway routing rules

Before / after — Python (OpenAI SDK)

BEFORE · LiteLLM (managed)

from openai import OpenAI

client = OpenAI(
    base_url="(self-hosted, varies)",
    api_key=os.environ["LITELLM_MASTER_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

LiteLLM's model slugs are mostly compatible — most provider prefixes (openai/, anthropic/, etc.) match AIgateway exactly.
Cost tracking: LiteLLM tracks per-key spend; AIgateway adds per-tag and per-sub-account on top.
No CLI automation yet — manual swap. PRs welcome at packages/aig-cli/src/commands/migrate.ts.

Credit match

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