gpt-5.6-luna vs gpt-6-luna

	gpt-5.6-luna	gpt-6-luna
Providers	OpenAI	OpenAI
Input $/M	$0.20	$0.10
Output $/M	$1.20	$0.50
Output multiplier	×6.00	×5.00
Context window	1.05M tokens	1.05M tokens
Intelligence index	43.4	—
Coding index	71.4	—

What the numbers mean

gpt-6-luna is roughly 2.0× cheaper on input than gpt-5.6-luna. If your workload passes the quality bar on the cheaper model, that gap compounds across every request; route to gpt-5.6-luna deliberately rather than by default.

Tags: gpt-5.6-luna — Chat, Reasoning, Coding, Vision · gpt-6-luna — Chat, Reasoning, Coding, Vision

Code

from openai import OpenAI
client = OpenAI(base_url="https://starseaapi.com/v1", api_key="sk-...")

# gpt-5.6-luna
client.chat.completions.create(model="gpt-5.6-luna", messages=[{"role":"user","content":"Hi"}])

# gpt-6-luna
client.chat.completions.create(model="gpt-6-luna", messages=[{"role": "user", "content": "Hi"}])