Start
$25 of API credit
$25
- Try every model
- Same API as the largest pack
- Credit never expires
Quick answer
Is LLMwithCrypto compatible with the OpenAI API?
Yes, for chat completions. LLMwithCrypto accepts the OpenAI chat completions format at https://llmwithcrypto.com/api/v1/chat/completions, so the official OpenAI SDKs, LangChain and other OpenAI-compatible tools work after you change the base URL and the model name. As of 23 October 2026 it serves 12 open-weight models, billed per token, paid in crypto with no KYC. Other OpenAI endpoints are not offered.
import os
from openai import OpenAI
client = OpenAI(
base_url="https://llmwithcrypto.com/api/v1",
api_key=os.environ["LLMWITHCRYPTO_API_KEY"],
)
resp = client.chat.completions.create(
model="gpt-oss-120b",
messages=[{"role": "user", "content": "Write a haiku about invoices."}],
)
print(resp.choices[0].message.content)
Which OpenAI features work, and which do not?
What the API accepts on 23 October 2026. The docs give the parameters of each endpoint.
| Feature | Status | Notes |
|---|---|---|
POST /v1/chat/completions | Supported | Messages, temperature, max tokens and the usual sampling settings |
Streaming (stream: true) | Supported on every model | Server-sent events, token by token — see streaming |
Tool calling (tools) | On models that support it | Follows what the model itself supports — see tool calling |
JSON output (response_format) | On models that support it | Follows what the model itself supports |
GET /v1/models | Supported | The model ids your key can call — see models endpoint |
GET /v1/credits | Ours, not OpenAI's | Credit left on the account |
| Responses API, Assistants | Not offered | Use chat completions |
| Embeddings, images, audio | Not offered | Text generation only |
| Fine-tuning, batch jobs | Not offered | — |
Prices checked on
What do I change in my code?
Two settings, nothing else:
- Base URL —
https://llmwithcrypto.com/api/v1instead of OpenAI's. - Model — an id from the models page, such as
deepseek-v4-proorgpt-oss-120b, instead of a GPT name.
The key goes where your OpenAI key went. Pass your API key as a Bearer token in the Authorization header, as the OpenAI SDK does. Store it in the LLMWITHCRYPTO_API_KEY environment variable rather than in your code. The switching guide covers Python, Node.js, LangChain and environment-variable setups.
What behaves differently from OpenAI?
- The models. Open-weight models answer differently from GPT. Test your prompts on two or three of them; switching costs one string.
- Token counts. You pay per token from your balance: input and output tokens are counted by the model’s own tokenizer and charged at that model’s price per 1M tokens. A call that ends in an error costs nothing. The same text can count a few more or fewer tokens than with OpenAI's tokenizer.
- Features per model. Streaming works on every model; tool calling and JSON output follow what each model itself supports.
- Limits. Every account has a per-minute request and token limit, shown in the dashboard; ask support and it can be raised.
- Errors. The status codes follow OpenAI's conventions; the errors page lists ours, including what happens when credit runs out.
Which tools work with it?
The API speaks the OpenAI chat completions format: point the OpenAI SDK, LangChain or any OpenAI-compatible tool at our base URL with your key, and change the model name. In practice that covers the official OpenAI Python and Node.js SDKs, LangChain's OpenAI chat model with a custom base URL, and agent frameworks or editors that let you set an OpenAI-compatible endpoint. The LangChain page shows the setup.
What does it cost?
Per token, at each model's price on the pricing page; credit is bought in packs and never expires.
Builder
$50 of API credit
$50
- One app or agent in daily use
- Streaming and tool calling
- Credit never expires
Production
$100 of API credit
$100
- Apps and agents in production
- Higher rate limit on request
- Credit never expires
In every plan: Every model on one key · Streaming and tool calling · Failed calls not charged · Credit never expires
Compatibility questions
Can I call GPT models through this endpoint?
No. We do not sell access to GPT, Claude, Gemini or Grok: their makers forbid reselling API access without their approval, and we do not have it.
Does the OpenAI Node.js SDK work?
Yes, with baseURL set to https://llmwithcrypto.com/api/v1. The Node.js page has a complete example.
What happens if I send a parameter a model does not support?
Streaming works on every model; tool calling and JSON output follow what each model itself supports. Test the parameter on the model you use; the errors page explains the responses you can get.
Do I need a separate key per model?
No. One key calls every model; Make one API key per app, agent or teammate and revoke any of them from the dashboard without touching the others.