GPT-5.6 Sol

GPT-5.6 Sol is the flagship tier of OpenAI's GPT-5.6 generation, built for the workloads where accuracy matters more than cost: long-horizon agents, complex code generation, research, and analysis. It takes text and images as input, supports function calling and structured outputs, and carries a 1M-token context window. Reach for Sol when you want OpenAI's highest quality on the hardest tasks, and drop to Terra or Luna once a workload proves it does not need the full tier.

Quick start

Use any OpenAI-compatible client. Just change base_url and your key.

from openai import OpenAI

client = OpenAI(
    api_key="tl-xxxxxxxxxxxxxxxxxxxxxxxx",
    base_url="https://api.thalam.ai/v1",
)

response = client.chat.completions.create(
    model="openai/gpt-5.6-sol",
    messages=[
        {"role": "user", "content": "Hello from Thalam!"}
    ],
)

print(response.choices[0].message.content)