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GPT-5.6 Luna Pro

gpt-5.6-luna-pro

GPT-5.6 Luna Pro uses the same underlying model as GPT-5.6 Luna, but runs with reasoning.mode set to pro to deliver higher-quality responses on complex tasks. It is optimized for deeper reasoning, advanced coding, and multi-step agentic workflows, offering improved accuracy and solution quality while retaining the efficiency and scalability of the Luna tier.

Context
1M tokens
Endpoint
Get API KeyCompare

Pricing

Input$0.20 / 1M
Output$1.20 / 1M
Cache Write (5m)Not published
Cache Write (1h)Not published
Cache ReadNot published
Web Search$0 / 1M

Quick Start

Select an endpoint and copy a working example for this model.

Endpoint:
python
from openai import OpenAI client = OpenAI(    api_key="YOUR_API_KEY",    base_url="https://api.apertis.ai/v1") response = client.chat.completions.create(    model="gpt-5.6-luna-pro",    messages=[        {"role": "user", "content": "Hello!"}    ],    max_tokens=1024,    temperature=0.7) print(response.choices[0].message.content) # Optional: Enable context compression to reduce token usage# response = client.chat.completions.create(#     model="gpt-5.6-luna-pro",#     messages=[{"role": "user", "content": "Hello!"}],#     extra_body={"compression": {"enabled": True, "model": "gpt-4.1-mini"}}# )

Supported Parameters

API docs
Common7 params
modelmessagesmax_tokenstemperaturetop_pstreamtools
Extended4 params
reasoning_effortstream_optionsthinkingextra_body

Cursor IDE Model IDs

Use these namespaced identifiers in Cursor IDE to avoid conflicts with built-in models.

gpt-5.6-luna-pro

Decision guidance

Fit the request contract before production.

Use this model when

  • The workload includes code generation or code-oriented text tasks listed in the current catalog record.
  • The required task matches the listed capabilities: text-to-text, text-to-code, translation.
  • The request depends on listed features such as vision, thinking, function-calling.
  • The input fits within the published 1M-token context record, with output and system overhead budgeted separately.

Check before production

  • Confirm the production client uses one of the listed request surfaces: /v1/chat/completions, /v1/responses, /v1/messages.
  • Estimate a representative request from the current Pay As You Go price fields instead of extrapolating from a tiny prompt.
  • Check the observed-availability card and run your own timeout, retry, and fallback test before relying on the model.

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