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OpenAI: GPT-5.6 Luna

🇺🇸 OpenAI · GPT-5.6 Luna

Input Price $1.00 per million tokens NT$32.0
Output Price $6.00 per million tokens NT$192
Context Window 1.05M tokens Output limit: 128K
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Overview

OpenAI: GPT-5.6 Luna is a large language model API from OpenAI, part of its GPT-5.6 Luna model family. Priced at $1.00 per million input tokens and $6.00 per million output tokens, it occupies the mid-range, balancing capability against running cost. Output tokens cost about 6× as much as input, so prompt-heavy workloads run noticeably cheaper than generation-heavy ones. An exceptionally large 1.05M-token context window (≈1,575 pages of text) means entire repositories or document collections can be processed without chunking. Beyond plain text it also accepts File, Image input, so it can be applied to multimodal tasks rather than text alone. On Artificial Analysis's Intelligence Index it scores 51 (A grade), a useful proxy for its general reasoning strength relative to the other models tracked here. All prices on this page reflect OpenRouter's routed rates and are re-synced automatically every day; confirm against the provider's official pricing before committing to production.

Dimension Unit Price (USD) Price (TWD) Effective From
Input per 1M tokens $1.00 NT$32.0
Output per 1M tokens $6.00 NT$192
Cached Input per 1M tokens $0.100 NT$3.2
Cache Write per 1M tokens $1.25 NT$40.0
Web Search per search $0.010 NT$0.32

Provider
OpenAI
Model Family
GPT-5.6 Luna
Version String
openai/gpt-5.6-luna
Status
Active
Modality
File, Image, Text
Context Window
1,050,000 tokens
Output Limit
128,000 tokens

Index Metrics

Cross-domain capability indexes evaluated by Artificial Analysis — Artificial Analysis

Agentic Index 46 A Measured: 2026-07-12
Coding Index 71 S Measured: 2026-07-12
Intelligence Index 51 A Measured: 2026-07-12

Benchmark Scores

Data source: Artificial Analysis

AA-LCR 74.0% B Measured: 2026-07-12
GPQA Diamond 91.1% S Measured: 2026-07-12
HLE 37.2% S Measured: 2026-07-12
MMMU Pro 78.5% A Measured: 2026-07-12
Non-Hallucination 9.9% Measured: 2026-07-12
Omniscience Accuracy 41.5% Measured: 2026-07-12
SciCode 52.5% A Measured: 2026-07-12

Performance Metrics

Real-world benchmarks, updated every 72 hours by Artificial Analysis — Artificial Analysis

First Token Latency 99.3s Measured: 2026-07-12
Output Speed 217 t/s Measured: 2026-07-12
Response Time 101.6s Measured: 2026-07-12

90-Day Price Trend

Input / Output price (USD per 1M tokens)

Past 90 days of records; every price change is shown here

Date Dimension Price (USD) Source
Web Search $0.010 OpenRouter
Cache Write $1.25 OpenRouter
Cached Input $0.100 OpenRouter
Output $6.00 OpenRouter
Input $1.00 OpenRouter
Web Search $0.010 OpenRouter
Cache Write $1.25 OpenRouter
Cached Input $0.100 OpenRouter
Output $6.00 OpenRouter
Input $1.00 OpenRouter
Web Search $0.010 OpenRouter
Cache Write $1.25 OpenRouter
Cached Input $0.100 OpenRouter
Output $6.00 OpenRouter
Input $1.00 OpenRouter
Web Search $0.010 OpenRouter
Cache Write $1.25 OpenRouter
Cached Input $0.100 OpenRouter
Output $6.00 OpenRouter
Input $1.00 OpenRouter

Key Insights

Key data points from this page for quick reference and citation.

  • OpenAI: GPT-5.6 Luna Input price: $1/M tokens
  • OpenAI: GPT-5.6 Luna Output price: $6/M tokens
  • Context window: 1,050,000 tokens
  • Provider: OpenAI
  • Model family: GPT-5.6 Luna
  • Modalities: File, Image, Text
  • Data source: OpenRouter, updated daily