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    OpenAI

    GPT-5.6 Luna

    OpenAI's July 9, 2026 GPT-5.6 model for cost-sensitive, high-volume workloads. Supports text and image input, text output and adjustable reasoning effort, with a 1.05M-token context window and up to 128K output. API prices fell 80% on July 30 to $0.20 input and $1.20 output per million tokens; cached input is $0.02. Above 272K input tokens, the full request costs 2x input and 1.5x output rates. Cache writes cost 1.25x the uncached input rate.

    1M tokens
    Multimodal
    Pro
    Provider
    OpenAI
    Context
    1M
    Catalog · As of Aug 11, 2026Stale · 31d old
    yno subscription tier
    Pro
    Released
    Jul 9, 2026
    Speed
    Fast
    Reasoning
    Advanced
    Modality
    Multimodal

    Benchmarks

    Quality

    AA Intelligence Index
    37.5points
    Artificial Analysis · Date unknownAge unknown
    AA Coding Index
    71.4points
    Artificial Analysis · Date unknownAge unknown
    GPQA Diamond
    91.1%
    Artificial Analysis · Date unknownAge unknown

    Speed and latency

    Output speed
    125.89tokens/s
    Configuration: Prompt length: 1,000 · Parallel queries: 1
    Artificial Analysis · Date unknownAge unknown
    Time to first token
    110.96s
    Configuration: Prompt length: 1,000 · Parallel queries: 1
    Artificial Analysis · Date unknownAge unknown
    Time to first answer token
    110.96s
    Configuration: Prompt length: 1,000 · Parallel queries: 1
    Artificial Analysis · Date unknownAge unknown

    API pricing

    API input cost
    $0.20/ 1M tokens
    Artificial Analysis · Date unknownAge unknown
    API output cost
    $1.20/ 1M tokens
    Artificial Analysis · Date unknownAge unknown

    Benchmark variant: GPT-5.6 Luna (max)

    AA data retrieved Sep 11, 2026 · Artificial Analysis

    Indexes use points; evaluations use accuracy percentages. API measurements do not measure yno application performance. Methodology

    Capabilities

    • Speed
    • Classification
    • Summarization
    • Code
    • Cost-Effective
    • Vision

    Use cases

    • High-volume pipelines
    • Classification
    • Summarization
    • Budget coding

    Strengths

    • 1.05M context / 128K output
    • Text and image input
    • Adjustable reasoning effort
    • Cached reads $0.02/MTok

    Best for

    Teams running cost-sensitive, high-volume workloads with the GPT-5.6 family

    Use GPT-5.6 Luna in yno.ai

    No credit card required

    Related models

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    Frequently asked

    What is GPT-5.6 Luna?
    OpenAI's July 9, 2026 GPT-5.6 model for cost-sensitive, high-volume workloads. Supports text and image input, text output and adjustable reasoning effort, with a 1.05M-token context window and up to 128K output. API prices fell 80% on July 30 to $0.20 input and $1.20 output per million tokens; cached input is $0.02. Above 272K input tokens, the full request costs 2x input and 1.5x output rates. Cache writes cost 1.25x the uncached input rate.
    How much does GPT-5.6 Luna cost in yno.ai?
    GPT-5.6 Luna is available on the Pro tier of yno.ai.
    What can GPT-5.6 Luna do?
    GPT-5.6 Luna is best for Teams running cost-sensitive, high-volume workloads with the GPT-5.6 family. Its main capabilities include Speed, Classification, Summarization, Code, Cost-Effective, Vision.
    How does GPT-5.6 Luna compare to other models?
    GPT-5.6 Luna excels at 1.05M context / 128K output and is recommended for High-volume pipelines, Classification, Summarization, Budget coding. See related models below.
    How do I use GPT-5.6 Luna in yno.ai?
    Sign up for yno.ai, select GPT-5.6 Luna from the model picker, and start chatting.