---
title: "Apertis AI (Stima API)"
url: "/docs/providers/apertis"
canonical_url: "https://docs.litellm.ai/docs/providers/apertis"
type: "docs"
last_updated: "2026-10-04"
related:
  - "/docs/providers/anyscale"
  - "/docs/providers/baseten"
---
# Apertis AI (Stima API)

> Index of all LiteLLM docs: https://docs.litellm.ai/llms.txt


## Overview

| Property | Details |
|-------|-------|
| Description | Apertis AI (formerly Stima API) is a unified API platform providing access to 430+ AI models through a single interface, with cost savings of up to 50%. |
| Provider Route on LiteLLM | `apertis/` |
| Link to Provider Doc | [Apertis AI Website ↗](https://api.stima.tech) |
| Base URL | `https://api.stima.tech/v1` |
| Supported Operations | [`/chat/completions`](/docs/providers/apertis#usage---litellm-python-sdk) |

<br />

## What is Apertis AI?

Apertis AI is a unified API platform that lets developers:
- **Access 430+ AI Models**: All models through a single API
- **Save 50% on Costs**: Competitive pricing with significant discounts
- **Unified Billing**: Single bill for all model usage
- **Quick Setup**: Start with just $2 registration
- **GitHub Integration**: Link with your GitHub account

## Required Variables

```python showLineNumbers title="Environment Variables"
os.environ["STIMA_API_KEY"] = ""  # your Apertis AI API key
```

Get your Apertis AI API key from [api.stima.tech](https://api.stima.tech).

## Usage - LiteLLM Python SDK

### Non-streaming

```python showLineNumbers title="Apertis AI Non-streaming Completion"
import os
import litellm
from litellm import completion

os.environ["STIMA_API_KEY"] = ""  # your Apertis AI API key

messages = [{"content": "What is the capital of France?", "role": "user"}]

# Apertis AI call
response = completion(
    model="apertis/model-name",  # Replace with actual model name
    messages=messages
)

print(response)
```

### Streaming

```python showLineNumbers title="Apertis AI Streaming Completion"
import os
import litellm
from litellm import completion

os.environ["STIMA_API_KEY"] = ""  # your Apertis AI API key

messages = [{"content": "Write a short poem about AI", "role": "user"}]

# Apertis AI call with streaming
response = completion(
    model="apertis/model-name",  # Replace with actual model name
    messages=messages,
    stream=True
)

for chunk in response:
    print(chunk)
```

## Usage - LiteLLM Proxy Server

### 1. Save key in your environment

```bash
export STIMA_API_KEY=""
```

### 2. Start the proxy

```yaml
model_list:
  - model_name: apertis-model
    litellm_params:
      model: apertis/model-name  # Replace with actual model name
      api_key: os.environ/STIMA_API_KEY
```

## Supported OpenAI Parameters

Apertis AI supports all standard OpenAI-compatible parameters:

| Parameter | Type | Description |
|-----------|------|-------------|
| `messages` | array | **Required**. Array of message objects with 'role' and 'content' |
| `model` | string | **Required**. Model ID from 430+ available models |
| `stream` | boolean | Optional. Enable streaming responses |
| `temperature` | float | Optional. Sampling temperature |
| `top_p` | float | Optional. Nucleus sampling parameter |
| `max_tokens` | integer | Optional. Maximum tokens to generate |
| `frequency_penalty` | float | Optional. Penalize frequent tokens |
| `presence_penalty` | float | Optional. Penalize tokens based on presence |
| `stop` | string/array | Optional. Stop sequences |
| `tools` | array | Optional. List of available tools/functions |
| `tool_choice` | string/object | Optional. Control tool/function calling |

## Cost Benefits

Apertis AI offers significant cost advantages:
- **50% Cost Savings**: Save money compared to direct provider costs
- **Unified Billing**: Single invoice for all your AI model usage
- **Low Entry**: Start with just $2 registration

## Model Availability

With access to 430+ AI models, Apertis AI provides:
- Multiple providers through one API
- Latest model releases
- Various model types (text, image, video)

## Additional Resources

- [Apertis AI Website](https://api.stima.tech)
- [Apertis AI Enterprise](https://api.stima.tech/enterprise)

## Related pages

- [Anyscale](https://docs.litellm.ai/docs/providers/anyscale.md)
- [Baseten](https://docs.litellm.ai/docs/providers/baseten.md)