Models

List and retrieve information about available AI models. Melious provides access to 45+ open-source models from leading AI research labs, hosted on European infrastructure for privacy and compliance.

List Models

GET /v1/models

Returns all available models in OpenAI format.

from openai import OpenAI

client = OpenAI(
    api_key="sk-mel-your-api-key-here",
    base_url="https://api.melious.ai/v1"
)

models = client.models.list()

for model in models.data:
    print(f"{model.id} - {model.owned_by}")

import OpenAI from 'openai';

const client = new OpenAI({
  apiKey: 'sk-mel-your-api-key-here',
  baseURL: 'https://api.melious.ai/v1'
});

const models = await client.models.list();

for (const model of models.data) {
  console.log(`${model.id} - ${model.owned_by}`);
}

curl https://api.melious.ai/v1/models \
  -H "Authorization: Bearer sk-mel-your-api-key-here"

Query Parameters

Response

{
  "object": "list",
  "data": [
    {
      "id": "gpt-oss-120b",
      "object": "model",
      "created": 1699999999,
      "owned_by": "Meta"
    },
    {
      "id": "qwen3-235b-a22b-instruct",
      "object": "model",
      "created": 1699999999,
      "owned_by": "Qwen"
    }
  ]
}

With Metadata

curl "https://api.melious.ai/v1/models?include_meta=true" \
  -H "Authorization: Bearer sk-mel-your-api-key-here"

{
  "object": "list",
  "data": [
    {
      "id": "gpt-oss-120b",
      "object": "model",
      "created": 1699999999,
      "owned_by": "Meta",
      "_meta": {
        "type": "chat",
        "input_modalities": ["text"],
        "output_modalities": ["text"],
        "capabilities": {
          "streaming": true,
          "function_calling": true
        },
        "context_length": 131072
      }
    }
  ]
}

Retrieve Model

GET /v1/models/{model_id}

Get details for a specific model.

model = client.models.retrieve("gpt-oss-120b")
print(f"Model: {model.id}")
print(f"Owner: {model.owned_by}")

const model = await client.models.retrieve('gpt-oss-120b');
console.log(`Model: ${model.id}`);
console.log(`Owner: ${model.owned_by}`);

curl https://api.melious.ai/v1/models/gpt-oss-120b \
  -H "Authorization: Bearer sk-mel-your-api-key-here"

Available Models

Chat Models

Audio-Input Models

Embedding Models

Reranking Models

Image Models

Audio Models (Speech-to-Text)

Model Capabilities

Vision Support

Models with vision can process images alongside text:

{
  "input_modalities": ["text", "image"]
}

Vision-capable models:

• gemma-3-27b (Google)
• mistral-small-3.2-24b-instruct (Mistral)
• deepseek-ocr (DeepSeek) - OCR and document understanding

Audio Input

For audio input with chat models:

{
  "input_modalities": ["text", "audio"]
}

Audio-input models:

• voxtral-small-24b-2507 (Mistral)

Function Calling

Most models support function calling (tools):

{
  "capabilities": {
    "function_calling": true
  }
}

Reasoning Models

Some models are optimized for complex reasoning tasks:

Reasoning models:

• deepseek-r1-0528 - DeepSeek reasoning model
• kimi-k2-thinking - Moonshot thinking model
• qwen3-235b-a22b-thinking - Qwen thinking variant
• qwen3-30b-a3b-thinking - Qwen thinking variant
• qwen3-4b-thinking - Qwen thinking variant
• gpt-oss-120b / gpt-oss-20b - OpenAI open-source reasoning

Hybrid models (can operate in both modes):

• hermes-4-405b, hermes-4-70b - NousResearch
• glm-4.5, glm-4.5-air, glm-4.6 - ZAI
• qwen3-32b - Qwen

Model Selection Guide

Top Recommended Models

By Use Case

Error Codes

See Also

• Chat Completions - Use models for chat
• Embeddings - Embedding models
• Reranking - Rerank documents by relevance