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Abacus

GPT-5.6 Luna model ID, context window & pricing

gpt-luna

Quick facts

Model ID gpt-5.6-luna
Source Abacus
Context Window 1000000
Pricing $1.00 input / $6.00 output per 1M tokens
Capabilities tool calling, reasoning, structured output

Model overview

GPT-5.6 Luna is an AI model from Abacus with 1000000 token context window and text, image input support.

Published pricing is $1.00 input and $6.00 output per 1M tokens.

  • Workloads that use text, image inputs with text outputs.
  • Agent and tool workflows that need function calling.
  • Reasoning-heavy prompts where stepwise problem solving matters.
Model ID gpt-5.6-luna
Provider Abacus
Family gpt-luna
Status -
Knowledge Cutoff 2026-02-16
Release Date 2026-07-09
Input Modalities text, image
Output Modalities text
Context Window 1000000
Input Limit -
Output Limit 128000
Tool Calling Yes
Reasoning Yes
Structured Output Yes
Temperature Control No
Open Weights No
Input Cost / 1M tokens $1.00
Output Cost / 1M tokens $6.00
Reasoning Cost / 1M tokens -
Cache Read Cost / 1M tokens $0.10
Cache Write Cost / 1M tokens -