Beginner5 min

Migrate from OpenAI in one diff

The drop-in migration Fireworks proved and we copied: same SDK, new base URL.

1. Change two lines

Base URL + model id. Everything else — retries, streaming, tools — is identical.

client = OpenAI(api_key="sk-runaii-...",  # your runaii key
                base_url="https://api.runaii.cloud/v1")
model="runaii/glm-5.3"  # was gpt-4.x

2. Verify with the playground

Paste the same prompt into /console/playground side-by-side. Metered, so you see the exact new cost.

# playground header shows live credit balance

3. Cut over gradually

Dual-run 5% of traffic, compare quality + cost in /console/usage, then flip. Rollback = swap the model id back.

model="runaii/glm-5.3"  # per-request model id

Try it live →More recipes

Next tutorials

Ship RAG — retrieval on you, answers on us

12 min · Intermediate

Tool-calling agents on GLM-5.3

10 min · Intermediate

Run nightly evals with the Batch API

8 min · Beginner