GPT-5.6 Luna

Name: GPT-5.6 Luna
Price: 1 USD
Author: OpenAI

GPT-5.6vLunaCurrent

OpenAI(ai lab)

Released July 9, 2026

API Docs

OpenTools Scorenormalized /100

9.7

Valuescore / $M

OpenTools Score

Context1.1M tokens

Price (In / Out)$1.00/M / $6.00/M

CategoryLarge Language Model

Max Output128K tokens

About GPT-5.6 Luna

GPT-5.6 Luna is OpenAI lower-cost GPT-5.6 model for high-volume reasoning, coding, and agentic workloads. OpenAI model docs list the same 1.05M token context window, 128K max output, and major tool support as the larger GPT-5.6 variants.

Capabilities

textvisionreasoningcodingtool useweb searchfile searchcomputer useagents

Input Modalities

textimage

Output Modalities

text

Technical Details

API Identifier: gpt-5.6-luna
Category: Large Language Model
Context Window: 1,050,000 tokens
Max Output Tokens: 128,000 tokens

Benchmarks

Performance scores for GPT-5.6 Luna across standard benchmarks.

Artificial Analysis Intelligence IndexArtificial Analysis · Jul 2026

51%

Artificial Analysis Coding Agent IndexArtificial Analysis · Jul 2026

74.6%

Pricing

Token pricing for GPT-5.6 Luna API usage.

Input Tokens

$1.00/M

per million tokens

Output Tokens

$6.00/M

per million tokens

Pricing Calculator

Input tokens/month

Output tokens/month

Input cost$1.00

Output cost$3.00

Estimated monthly cost$4.00

OpenAI pricing page lists $1 input and $6 output per 1M tokens, plus GPT-5.6 cache-write and cache-read pricing.

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Creating safe AGI that benefits all of humanity

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Large language models from the same organization.

Model	Context Window	Price (In / Out per M)	Capabilities
GPT-5.6 SolCurrent	1.1M	$5.00 / $30.00	textvisionreasoningcoding+5
GPT-5.6 TerraCurrent	1.1M	$2.50 / $15.00	textvisionreasoningcoding+5
GPT-5.5 ProCurrent	1.1M	$30.00 / $180.00	textvisioncodetool use+2
GPT-5.5Current	1.1M	$5.00 / $30.00	textvisioncodetool use+3
GPT-5.4 MiniCurrent	400K	$0.75 / $4.50	textvisioncode
GPT-5.4 NanoCurrent	400K	$0.20 / $1.25	textvisioncode