OpenAI API alternatives that keep your SDK
Most teams looking for an OpenAI API alternative don't want to rewrite anything: they want other models behind the same SDK, or the same GPT models on different terms. Both are a base URL change.
Competitor details were checked against their official pages on November 4, 2026. Prices and limits change; follow the links to confirm.
Change the base URL, keep the code
The OpenAI SDK takes a base URL. Point it at Inferray and every model in the catalog answers on the same Chat Completions and Responses calls:
from openai import OpenAI
client = OpenAI(base_url="https://api.inferray.com/v1", api_key="inferray_...")
reply = client.chat.completions.create(
model="claude-sonnet-5-5", # or gemini-4-argon, deepseek-v4.1-flash, gpt-6.1-sol
messages=[{"role": "user", "content": "ship it"}],
)
Image generation works the same way on /v1/images/generations, and Claude-style clients can use the Anthropic-compatible /v1/messages.
The models you can switch to
| Model | Input / 1M | Cached / 1M | Output / 1M | Context |
|---|---|---|---|---|
| GPT-6.1 Sol | $2 | $0.1 | $10 | 1.1M |
| Claude Sonnet 5.5 | $2 | $0.1 | $10 | 1M |
| Gemini 3.8 Flash | $0.75 | $0.075 | $3.75 | 1.0M |
| DeepSeek V4.1 Flash | $0.15 | $0.003 | $0.6 | 1M |
| GLM-5.3 | $0.77 | $0.143 | $2.42 | 262K |
| Kimi K3 | $3 | $0.3 | $15 | 1.0M |
Each runs at its list price, with no gateway fee on top.
Where to buy the same models
| Pay | Fee on top | Other labs' models | |
|---|---|---|---|
| Direct from each lab | One account and bill per lab | — | One lab per account |
| OpenRouter | Prepaid credits | 5.5% on credit purchases (Standard), 8% (Business) | Yes |
| Requesty | Pay as you go | 5% on model cost | Yes |
| Inferray | Prepaid credit or a Token Plan | None | Yes |
Fees as each vendor's pricing page stated them on November 4, 2026.
What else you get
- One balance for every model, with spend broken down by project, key and model.
- Free seats, projects and API keys for the whole team.
- Credit that never expires. A top-up credits exactly what you pay.
- Volume discounts if you spend steadily every month — ask us.
Prices on this page come from the model catalog and were current on November 12, 2026.