GPT-6 Astra API

US OpenAI | released 2026-10

GPT-6 Astra is OpenAI’s flagship for demanding end-to-end work: advanced analysis, software engineering, deep research, scientific work and document creation. It leads the GPT-6 family where computer use and long-running autonomy decide outcomes, at flagship pricing.

ReasoningCodeTool UseFlagshipvision

Pricing (official list, per 1M tokens)

Input

$10.00/M

Output

$50.00/M

Specifications

Context window400K tokens Input modalitiesText StreamingYes APIOpenAI-compatible

How to use GPT-6 Astra

Drop-in OpenAI replacement. Change only the base_url and model.

# Python -pip install openai
from openai import OpenAI

client = OpenAI(
    base_url="https://meshtok.com/v1",
    api_key="sk-your-MeshTok-key",
)

resp = client.chat.completions.create(
    model="openai/gpt-6-astra",
    messages=[{"role":"user","content":"Hello!"}],
)
print(resp.choices[0].message.content)

# cURL
curl https://meshtok.com/v1/chat/completions \
  -H "Authorization: Bearer sk-your-MeshTok-key" \
  -H "Content-Type: application/json" \
  -d '{"model":"openai/gpt-6-astra","messages":[{"role":"user","content":"Hello!"}]}'